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source: fedd/abac-src/rtml/src/edu/stanford/rt/parser/RTParser.java @ 16a23a6

axis_examplecompt_changesinfo-opsversion-2.00version-3.01version-3.02

Last change on this file since 16a23a6 was 8780cbec, checked in by Jay Jacobs <Jay.Jacobs@…>, 15 years ago
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1	package edu.stanford.rt.parser;
2
3	//imports Apache Xerces API
4	import org.apache.xerces.parsers.DOMParser;
5	import org.xml.sax.InputSource;
6	import org.w3c.dom.*;
7
8	// imports XML Security PublicKey api
9	import org.apache.xml.security.keys.content.keyvalues.DSAKeyValue;
10	import org.apache.xml.security.keys.content.keyvalues.RSAKeyValue;
11	import org.apache.xml.security.exceptions.XMLSecurityException;
12
13	import java.io.*;
14	import java.util.*;
15
16	import edu.stanford.rt.datatype.*;
17	import edu.stanford.rt.credential.*;
18	import edu.stanford.rt.util.*;
19
20	/**
21	* @author Ninghui Li, Sandra Qiu <br>
22	*
23	* RTParser parses a XML-format CredentialStore document and transforms
24	* the various elements into their corresponding Java objects.
25	*/
26	public class RTParser implements TagNameConstants, Constants
27	{
28	/** The DOM parser this transformer uses*/
29	private DOMParser parser;
30
31	/**
32	* Constructor for RTParser.
33	*/
34	public RTParser() throws Exception
35	{
36	parser = new DOMParser();
37	parser.setFeature(
38	"http://apache.org/xml/features/validation/schema",
39	true);
40	parser.setErrorHandler(new ParsingErrorHandler());
41	}
42
43	/**
44	* Method createSystemDomain.
45	* The method for creating system domain.
46	* *** Only useful for our parser.
47	* @return ApplicationDomain
48	* @throws Exception
49	*/
50	public synchronized ApplicationDomain createSystemDomain()
51	throws Exception
52	{
53	String spec =
54	System.getProperty("edu.stanford.rt.SystemDomain",
55	"C:\\rtml\\schemas\\systemSpec.xml");
56	return parseSystemDomain(new FileInputStream(new File(spec)));
57	}
58
59	/**
60	* Method parseSystemDomain. <br>
61	* parses system domain from a XML input source, typically a
62	* XML file. The system domain element in the source should be
63	* the root element.
64	* @param in
65	* @return ApplicationDomain
66	* @throws Exception
67	*/
68	public synchronized ApplicationDomain parseSystemDomain(InputStream in)
69	throws Exception
70	{
71	parser.parse(new InputSource(in));
72	Document document = parser.getDocument();
73	Element root = document.getDocumentElement();
74	return transformSystemDomain(root);
75	}
76
77	/**
78	* Method parseSystemDomain. <br>
79	* parses system domain from a XML input source, typically a
80	* XML file. The system domain element in the source should be
81	* the root element.
82	* @param in
83	* @return CredentialDomain
84	* @throws Exception
85	*/
86	public synchronized CredentialDomain
87	parseCredentialDomain(InputStream in, RTContext context)
88	throws Exception
89	{
90	parser.parse(new InputSource(in));
91	Document document = parser.getDocument();
92	Element root = document.getDocumentElement();
93	return transformCredential(root, context);
94	}
95
96
97	/**
98	* Method transformSystemDomain.<br>
99	* transforms the XML element to the built-in system
100	* <code>ApplicationDomain</code>.
101	* @param root
102	* XML element of system domain.
103	* @return ApplicationDomain
104	* @throws DomainSpecException
105	*/
106	public synchronized ApplicationDomain transformSystemDomain(Element root)
107	throws DomainSpecException
108	{
109	if (!root.getTagName().equals(APP_DOMAIN_SPEC))
110	throw new DomainSpecException("Not an ApplicationDomainSpecification element.");
111	String uri = root.getAttribute(URI);
112	ApplicationDomain spec =
113	new ApplicationDomain(uri, true, null);
114	String hashID = root.getAttribute(ID);
115	if (hashID.length() == 0)
116	{
117	// compute the hashID ourselves.
118	// hashID = getHash(spec);
119	}
120	HashID id = new HashID(HashID.APPLICATION_DOMAIN, hashID);
121	spec.setHashID(id);
122	// Add XML schema date types
123	spec.addType(new TimeType("dateTime"));
124	spec.addType(new TimeType("date"));
125	spec.addType(new TimeType("time"));
126	spec.addType(new TimeType("gYear"));
127	spec.addType(new TimeType("gYearMonth"));
128	spec.addType(new TimeType("gMonth"));
129	spec.addType(new TimeType("gMonthDay"));
130	spec.addType(new TimeType("gDay"));
131	Element[] elements = RTParser.getChildElements(root);
132	for (int i = 0; i < elements.length; i++)
133	{
134	Element childEle = elements[i];
135	String childName = childEle.getTagName();
136	if (childName.equals(INTEGER_TYPE))
137	{
138	IntegerType intType =
139	transformIntegerTypeDeclaration(childEle);
140	spec.addType(intType);
141	}
142	else if (childName.equals(DECIMAL_TYPE))
143	{
144	DecimalType decimalType =
145	transformDecimalTypeDeclaration(childEle);
146	spec.addType(decimalType);
147	}
148	else if (childName.equals(STRING_TYPE))
149	{
150	StringType stringType =
151	transformStringTypeDeclaration(childEle);
152	spec.addType(stringType);
153	}
154	else if (childName.equals(ENUM_TYPE))
155	{
156	EnumType enumType =
157	transformEnumTypeDeclaration(childEle, spec);
158	spec.addType(enumType);
159	}
160	else if (childName.equals(RECORD_TYPE))
161	{
162	RecordType recordType =
163	transformRecordTypeDeclaration(childEle, spec);
164	spec.addType(recordType);
165	}
166	else if (childName.equals(TREE_TYPE))
167	{
168	TreeType treeType =
169	transformTreeTypeDeclaration(childEle);
170	spec.addType(treeType);
171	}
172	} // end of for()...
173	spec.setComplete();
174	return spec;
175	}
176
177	/**
178	* Method getFirstChildElement.<br>
179	Returns the first child element of ELEMENT_NODE type for the
180	given parent element.
181	* @param parent
182	* @return Element
183	*/
184	static public Element getFirstChildElement(Element parent)
185	{
186	Element ele = null;
187	NodeList nodes = parent.getChildNodes();
188	int n = nodes.getLength();
189	for (int i = 0; i < n; i++)
190	{
191	Node node = nodes.item(i);
192	short type = node.getNodeType();
193	if (type != org.w3c.dom.Node.ELEMENT_NODE)
194	continue;
195	ele = (Element) node;
196	break;
197	}
198	return ele;
199	}
200
201	/**
202	* Method getFirstChildElementByTagName.<br>
203	* returns the first child element with the given tag name.
204	* @param parent
205	* @param tagName
206	* @return Element
207	*/
208	/**
209	*/
210	static public Element getFirstChildElementByTagName(
211	Element parent,
212	String tagName)
213	{
214	Element ele = null;
215	NodeList nodes = parent.getElementsByTagName(tagName);
216	ele = (Element) nodes.item(0);
217	return ele;
218	}
219
220	/**
221	* Method getChildElements.<br>
222	* returns an array of child elements of ELEMNENT_NODE type.
223	* @param parent
224	* @return Element[]
225	*/
226	static public Element[] getChildElements(Element parent)
227	{
228	ArrayList elements = new ArrayList();
229	NodeList nodes = parent.getChildNodes();
230	int n = nodes.getLength();
231	for (int i = 0; i < n; i++)
232	{
233	Node node = nodes.item(i);
234	short type = node.getNodeType();
235	if (type != org.w3c.dom.Node.ELEMENT_NODE)
236	continue;
237	elements.add((Element) node);
238	}
239	// put into an array of Elements.
240	int size = elements.size();
241	Element[] eleArray = new Element[size];
242	for (int i = 0; i < size; i++)
243	{
244	eleArray[i] = (Element) elements.get(i);
245	}
246	return eleArray;
247	}
248
249	/**
250	* Method parseCredentialStore.<br>
251	* parses credential store from an XML input source, typically an
252	* XML file. The <code>CredentialStore</code> element should be a
253	* root element.
254	* @param in
255	* @param rtContext
256	* the context in which the parsing occurs.
257	* @param credentialStore
258	* the credential store being constructed.
259	* @throws DomainSpecException
260	*/
261	public synchronized void parseCredentialStore(
262	InputStream in,
263	RTContext rtContext,
264	CredentialStore credentialStore)
265	throws Exception
266	{
267	parser.parse(new InputSource(in));
268	Document document = parser.getDocument();
269	Element root = document.getDocumentElement();
270	transformCredentialStore(root, rtContext, credentialStore);
271	}
272
273	/**
274	* Method transformCredentialStore.<br>
275	* @param root
276	* the XML element of credential store
277	* @param rtContext
278	* @param credentialStore
279	* @throws DomainSpecException
280	* @throws CredException
281	*/
282	public synchronized void transformCredentialStore(
283	Element root,
284	RTContext rtContext,
285	CredentialStore credentialStore)
286	throws DomainSpecException, CredException
287	{
288	String rootTag = root.getTagName();
289	if (!rootTag.equals(CREDENTIAL_STORE))
290	{
291	throw new DomainSpecException("Not a CredentialStore document.");
292	}
293	Element[] elements = getChildElements(root);
294	for (int i = 0; i < elements.length; i++)
295	{
296	String tag = elements[i].getTagName();
297	if (tag.equals(APP_DOMAIN_SPEC))
298	{
299	ApplicationDomain spec =
300	transformDomain(elements[i], rtContext);
301	HashID id = spec.getHashID();
302	rtContext.addApplicationDomain(id, spec);
303	}
304	else if (tag.equals(PRINCIPAL_INFO))
305	{
306	// TODO
307	// rtContext.addPrincipal(PublickeyPrincipal, PublicKeyPrincipalInfo);
308	}
309	else if (tag.equals(CREDENTIAL))
310	{
311	CredentialDomain credentialDomain =
312	transformCredential(elements[i], rtContext);
313	HashID id = credentialDomain.getHashID();
314	credentialStore.addCredentialDomain(
315	id,
316	credentialDomain);
317	}
318	// else if (tag.equals(ACCESS_RULE))
319	// {
320	// CredentialDomain accessRuleDomain =
321	// transformAccessRule(elements[i], rtContext);
322	// HashID id = accessRuleDomain.getHashID();
323	// credentialStore.addCredentialDomain(
324	// id,
325	// accessRuleDomain);
326	// }
327	}
328	}
329
330	/**
331	* Method transformDomain.<br>
332	* parses non-system <code>ApplicationDomain</code>.
333	* @param ele
334	* the <code>ApplicationDomain</code> element
335	* @param rtContext
336	* the context in which the transformation occurs.
337	* @return ApplicationDomain
338	* @throws DomainSpecException
339	*/
340	public synchronized ApplicationDomain transformDomain(
341	Element ele,
342	RTContext rtContext)
343	throws DomainSpecException
344	{
345	if (!ele.getTagName().equals(APP_DOMAIN_SPEC))
346	throw new DomainSpecException("Not an ApplicationDomainSpecification element");
347	String uri = ele.getAttribute(URI);
348	// if (uri.length() == 0)
349	// throw new DomainSpecException(
350	// missing_attr_value + "'uri'");
351	ApplicationDomain spec =
352	new ApplicationDomain(uri, false, rtContext);
353	String hashID = ele.getAttribute(ID);
354	if (hashID.length() == 0)
355	{
356	// compute the hashID ourselves.
357	// hashID = getHash(spec);
358	}
359	HashID id = new HashID(HashID.APPLICATION_DOMAIN, hashID);
360	spec.setHashID(id);
361	Element[] elements = getChildElements(ele);
362	for (int i = 0; i < elements.length; i++)
363	{
364	Element childEle = elements[i];
365	String childName = childEle.getTagName();
366	if (childName.equals(IMPORT_DOMAIN))
367	{
368	String name = childEle.getAttribute(NAME);
369	if (name.length() == 0)
370	throw new DomainSpecException(
371	missing_attr_value + "'name'");
372	String importedUri = childEle.getAttribute(URI);
373	String idref = childEle.getAttribute(IDREF);
374	if (idref.length() == 0)
375	throw new DomainSpecException(
376	missing_attr_value + "'idref'");
377	ApplicationDomain importedDomain =
378	locateDomain(idref, importedUri, rtContext);
379	spec.importDomain(name, importedDomain);
380	}
381	else if (childName.equals(INTEGER_TYPE))
382	{
383	IntegerType intType =
384	transformIntegerTypeDeclaration(childEle);
385	spec.addType(intType);
386	}
387	else if (childName.equals(DECIMAL_TYPE))
388	{
389	DecimalType decimalType =
390	transformDecimalTypeDeclaration(childEle);
391	spec.addType(decimalType);
392	}
393	else if (childName.equals(ENUM_TYPE))
394	{
395	EnumType enumType =
396	transformEnumTypeDeclaration(childEle, spec);
397	spec.addType(enumType);
398	}
399	else if (childName.equals(STRING_TYPE))
400	{
401	StringType stringType =
402	transformStringTypeDeclaration(childEle);
403	spec.addType(stringType);
404	}
405	else if (childName.equals(RECORD_TYPE))
406	{
407	RecordType recordType =
408	transformRecordTypeDeclaration(childEle, spec);
409	spec.addType(recordType);
410	}
411	else if (childName.equals(TREE_TYPE))
412	{
413	TreeType treeType =
414	transformTreeTypeDeclaration(childEle);
415	spec.addType(treeType);
416	}
417	else if (childName.equals(PRINCIPAL_TYPE))
418	{
419	// This element specifies the principal type for the entire system
420	// Later on, the principal value can be checked against the type
421	// defined here.
422	SimpleType prinType =
423	transformPrincipalTypeDeclaration(childEle, spec);
424	spec.setPrincipalType(prinType);
425	}
426	else if (childName.equals(ROLE_DECLARATION))
427	{
428	RoleDeclaration role =
429	transformRoleDeclaration(childEle, spec);
430	spec.addRole(role);
431	}
432	} //end of for( )....
433	spec.setComplete();
434	return spec;
435	} //==== End of parseDomainSpec()
436	/**
437	Parses non-system domain specification object from a file pointed by the
438	given uri.
439	*/
440	// private void parseDomainSpec(String uri)
441	// {
442	// DomainSpecification spec = null;
443	// try
444	// {
445	// DOMParser parser = new DOMParser();
446	// parser.setFeature(
447	// "http://apache.org/xml/features/validation/schema",
448	// true);
449	// parser.parse(new InputSource(new FileInputStream(new File(uri))));
450	// Document doc = parser.getDocument();
451	// transform(doc);
452	// }
453	// catch (SAXException e)
454	// {
455	// System.out.println("error in setting up parser feature");
456	// }
457	// catch (Exception ex)
458	// {
459	// ex.printStackTrace();
460	// }
461	// }
462	//
463	// private void transform(Document document) throws Exception
464	// {
465	// Element root = document.getDocumentElement();
466	// String rootTag = root.getTagName();
467	//
468	// }
469	/**
470	* Method locateDomain.<br>
471	* @param rtContext
472	* @param idref
473	* the hash value of the target
474	* <code>ApplicationDomainSpecification</code> object.
475	* @param uri
476	* @return ApplicationDomain
477	* @throws DomainSpecException
478	* if cannot find the domain by the given idref.
479	*/
480	private ApplicationDomain locateDomain(
481	String idref,
482	String uri,
483	RTContext rtContext)
484	throws DomainSpecException
485	{
486	ApplicationDomain spec = null;
487	if (!rtContext.hasDomainWithID(idref))
488	{
489	//TODO: load domain from given uri, which is optional.
490	//parseDomainSpec(uri);
491	//spec = (DomainSpecification)applicationDomains.get(uri);
492	throw new DomainSpecException(
493	"Cannot find domain with id '" + idref + "'.");
494	}
495	else
496	{
497	spec = rtContext.getApplicationDomain(idref);
498	}
499	if (!spec.isComplete())
500	{
501	throw new DomainSpecException("Circular Dependency");
502	}
503	return spec;
504	}
505	/*###########################################################
506	#####
507	##### Parsing DateType Declaration in DomainSpecification
508	#####
509	#############################################################*/
510	/**
511	* Method transformIntegerTypeDeclaration.<br>
512	*
513	* Parses IntegerType declaration in ADSD.
514	* Returns an IntegerType object by parsing element:<br>
515	<pre>
516	<IntegerType name="" min="" max=""/>
517	</pre>
518	* @param ele
519	* @return IntegerType
520	* @throws DomainSpecException
521	*/
522	private IntegerType transformIntegerTypeDeclaration(Element ele)
523	throws DomainSpecException
524	{
525	if (!ele.getTagName().equals(INTEGER_TYPE))
526	throw new DomainSpecException("Not an IntegerType element");
527	String name = ele.getAttribute(NAME);
528	String minStr = ele.getAttribute(MIN);
529	String maxStr = ele.getAttribute(MAX);
530	if (name.length() == 0)
531	throw new DomainSpecException(
532	missing_attr_value + "'name'");
533	if (minStr.length() == 0)
534	throw new DomainSpecException(
535	missing_attr_value + "'min'");
536	if (maxStr.length() == 0)
537	throw new DomainSpecException(
538	missing_attr_value + "'max'");
539	long min = Long.parseLong(minStr);
540	long max = Long.parseLong(maxStr);
541	// RTUtil.debugInfo("name = " + name);
542	// RTUtil.debugInfo("min = " + ele.getAttribute(MIN));
543	// RTUtil.debugInfo("max = " + ele.getAttribute(MAX));
544	// RTUtil.debugInfo("base = " + ele.getAttribute(BASE));
545	// RTUtil.debugInfo("step = " + ele.getAttribute(STEP));
546	// RTUtil.debugInfo("includeMin = " + ele.getAttribute(INCLUDE_MIN));
547	// RTUtil.debugInfo("includeMax = " + ele.getAttribute(INCLUDE_MAX));
548	boolean includeMin =
549	RTUtil.parseBoolean(ele.getAttribute(INCLUDE_MIN), true);
550	boolean includeMax =
551	RTUtil.parseBoolean(ele.getAttribute(INCLUDE_MAX), true);
552	long base = RTUtil.parseLong(ele.getAttribute(BASE), 0);
553	long step = RTUtil.parseLong(ele.getAttribute(STEP), 1);
554	return new IntegerType(
555	name,
556	min,
557	max,
558	includeMin,
559	includeMax,
560	base,
561	step);
562	}
563	/**
564	* Method transformDecimalTypeDeclaration.<br>
565	* Parses DecimalType declaration in ADSD.
566	Returns a DecimalType object by parsing element:
567	<pre>
568	<DecimalType name="" min="" max=""/>
569	</pre>
570	* @param ele
571	* @return DecimalType
572	* @throws DomainSpecException
573	*/
574	private DecimalType transformDecimalTypeDeclaration(Element ele)
575	throws DomainSpecException
576	{
577	if (!ele.getTagName().equals(DECIMAL_TYPE))
578	throw new DomainSpecException("Not a DecimalType element");
579	// TODO
580	throw new UnsupportedOperationException(
581	no_support_for + "'DecimalType'");
582	}
583	/**
584	* Method transformStringTypeDeclaration.<br>
585	* Parses StringType declaration in ADSD.
586	Returns a StringType object by parsing element:<br>
587	<pre>
588	<StringType name="" ignoreCase="false" ordered="false"/>
589	</pre>
590	* @param ele
591	* @return StringType
592	* @throws DomainSpecException
593	*/
594	private StringType transformStringTypeDeclaration(Element ele)
595	throws DomainSpecException
596	{
597	if (!ele.getTagName().equals(STRING_TYPE))
598	throw new DomainSpecException("Not a StringType element");
599	String name = ele.getAttribute(NAME);
600	if (name.length() == 0)
601	throw new DomainSpecException(
602	missing_attr_value + "'name'");
603	boolean ignoreCase =
604	RTUtil.parseBoolean(ele.getAttribute(IGNORE_CASE), false);
605	boolean ordered =
606	RTUtil.parseBoolean(ele.getAttribute(ORDERED), false);
607	return new StringType(name, ignoreCase, ordered);
608	}
609	/**
610	* Method transformEnumTypeDeclaration.<br>
611	* Parses EnumType declaration in ADSD.
612	Returns an EnumType object by parsing element:<br>
613	<pre>
614	<EnumType name="" ignoreCase="false" ordered="false"/>
615	<EnumValue>Monday</EnumValue>
616	<EnumValue>Wednesday</EnumValue>
617	<EnumValue>Friday</EnumValue>
618	...
619	</EnumType>
620	</pre>
621	* @param ele
622	* @param currentSpec
623	* @return EnumType
624	* @throws DomainSpecException
625	*/
626	private EnumType transformEnumTypeDeclaration(
627	Element ele,
628	DomainSpecification currentSpec)
629	throws DomainSpecException
630	{
631	if (!ele.getTagName().equals(ENUM_TYPE))
632	throw new DomainSpecException("Not an EnumType element");
633	OrderedMap enumValues =
634	new OrderedMap(String.class, Object.class);
635	DataType valueType = null;
636	String name = ele.getAttribute(NAME);
637	if (name.length() == 0)
638	throw new DomainSpecException(
639	missing_attr_value + "'name'");
640	boolean ignoreCase =
641	RTUtil.parseBoolean(ele.getAttribute(IGNORE_CASE), false);
642	boolean ordered =
643	RTUtil.parseBoolean(ele.getAttribute(ORDERED), false);
644	int size = RTUtil.parseInt(ele.getAttribute(SIZE), 0);
645	Element[] elements = getChildElements(ele);
646	for (int i = 0; i < elements.length; i++)
647	{
648	Element child = elements[i];
649	String childName = child.getTagName();
650	if (childName.equals(TYPE)) // nameRef type
651	{
652	// QQ: This element has been removed , as of 8/28/02
653	String domain = child.getAttribute(DOMAIN);
654	String n = child.getAttribute(NAME);
655	valueType = currentSpec.lookupType(domain, n);
656	}
657	else if (childName.equals(ENUM_VALUE))
658	{
659	String value =
660	transformEnumValue(null, child).getValue();
661	//RTUtil.debugInfo("value = " + value);
662	enumValues.put(value, null);
663	}
664	}
665	return new EnumType(
666	name,
667	valueType,
668	enumValues,
669	ignoreCase,
670	ordered,
671	size);
672	}
673	/**
674	* Method transformTreeTypeDeclaration.<br>
675	* Parses TreeType declaration in ADSD.
676	Returns a TreeType object by parsing element:<br>
677	<pre>
678	<TreeType name="DNSType" sparator="." order="rootLast"/>
679	</pre>
680	* @param ele
681	* @return TreeType
682	* @throws DomainSpecException
683	*/
684	private TreeType transformTreeTypeDeclaration(Element ele)
685	throws DomainSpecException
686	{
687	if (!ele.getTagName().equals(TREE_TYPE))
688	throw new DomainSpecException("Not a TreeType element");
689	String name = ele.getAttribute(NAME);
690	String separator = ele.getAttribute(SEPARATOR);
691	String order = ele.getAttribute(ORDER);
692	if (name.length() == 0)
693	throw new DomainSpecException(
694	missing_attr_value + "'name'");
695	if (separator.length() == 0)
696	throw new DomainSpecException(
697	missing_attr_value + "'sepatator'");
698	if (order.length() == 0)
699	throw new DomainSpecException(
700	missing_attr_value + "'order'");
701	// RTUtil.debugInfo("name = " +name);
702	// RTUtil.debugInfo("separator = " + separator);
703	// RTUtil.debugInfo("order = " + order);
704	return new TreeType(
705	name,
706	separator,
707	order.equals(ROOT_FIRST));
708	}
709	/**
710	* Method transformRecordTypeDeclaration.<br>
711	* Parses RecordType declaration in ADSD.
712	Returns a RecordType object by parsing element:
713	<pre>
714	<RecordType name="record">
715	<Field name="field1">
716	<Type domain="" name=""/>
717	</Field>
718	<Field name="field2">
719	<Type domain="" name=""/>
720	</Field>
721	...
722	</RecordType>
723	</pre>
724	* @param ele
725	* @param currentSpec
726	* @return RecordType
727	* @throws DomainSpecException
728	*/
729	private RecordType transformRecordTypeDeclaration(
730	Element ele,
731	DomainSpecification currentSpec)
732	throws DomainSpecException
733	{
734	if (!ele.getTagName().equals(RECORD_TYPE))
735	throw new DomainSpecException("Not a RecordType element");
736	String name = ele.getAttribute(NAME);
737	if (name.length() == 0)
738	throw new DomainSpecException(
739	missing_attr_value + "'name'");
740	RTUtil.debugInfo(
741	"parseRecordTypeDeclaration() > name = " + name);
742	NodeList childNodes = ele.getElementsByTagName(FIELD);
743	int size = childNodes.getLength();
744	if (size < 1)
745	throw new DomainSpecException("No fields specified for the RecordType element.");
746	OrderedMap fieldDeclarations =
747	new OrderedMap(size, String.class, DataType.class);
748	for (int i = 0; i < size; i++)
749	{
750	Element field = (Element) childNodes.item(i);
751	String fieldName = field.getAttribute(NAME);
752	if (fieldName.length() == 0)
753	throw new DomainSpecException(
754	missing_attr_value + "'name'");
755	Element typeRefEle =
756	getFirstChildElementByTagName(field, TYPE);
757	String typeName = typeRefEle.getAttribute(NAME);
758	if (typeName.length() == 0)
759	throw new DomainSpecException(
760	missing_attr_value + "'name'");
761	String typeDomain = typeRefEle.getAttribute(DOMAIN);
762	RTUtil.debugInfo("fieldName = " + fieldName);
763	// RTUtil.debugInfo("typeName = " + typeName);
764	// RTUtil.debugInfo("typeDomain = " + typeDomain);
765	DataType fieldType =
766	currentSpec.lookupType(typeDomain, typeName);
767	fieldDeclarations.put(fieldName, fieldType);
768	}
769	return new RecordType(name, fieldDeclarations);
770	}
771	/**
772	* Method transformPrincipalTypeDeclaration.<br>
773	Parses PrincipalType declaration in ADSD.
774
775	Returns a SimpleType object by parsing element:
776	<pre>
777	<PrincialType name="prinType">
778	<TypeRef domain="" name=""/>
779	</PrincialType>
780	</pre>
781	* @param ele
782	* @param currentSpec
783	* @return SimpleType
784	* @throws DomainSpecException
785	*/
786	private SimpleType transformPrincipalTypeDeclaration(
787	Element ele,
788	DomainSpecification currentSpec)
789	throws DomainSpecException
790	{
791	if (!ele.getTagName().equals(PRINCIPAL_TYPE))
792	throw new DomainSpecException("Not a PrincipalType element");
793	Element typeRefEle = getFirstChildElementByTagName(ele, TYPE);
794	String domain = typeRefEle.getAttribute(DOMAIN);
795	String name = typeRefEle.getAttribute(NAME);
796	if (name.length() == 0)
797	throw new DomainSpecException(
798	missing_attr_value + "'name'");
799	return (SimpleType) currentSpec.lookupType(domain, name);
800	}
801	/**
802	* Method transformRoleDeclaration.<br>
803	* Parses RoleDeclaration in ADSD.
804	Returns a RoleDeclaration object by parsing element:
805	<pre>
806	<RoleDeclaration name="record">
807	<Parameter name="param1">
808	<Type domain="" name=""/>
809	</Parameter>
810	<Parameter name="param2">
811	<Type domain="" name=""/>
812	</Parameter>
813	...
814	</RoleDeclaration>
815	</pre>
816	* @param ele
817	* @param currentSpec
818	* the DomainSpecification in which the role is declared.
819	* @return RoleDeclaration
820	* @throws DomainSpecException
821	*/
822	private RoleDeclaration transformRoleDeclaration(
823	Element ele,
824	DomainSpecification currentSpec)
825	throws DomainSpecException
826	{
827	if (!ele.getTagName().equals(ROLE_DECLARATION))
828	throw new DomainSpecException("Not a RoleDeclaration element");
829	String roleName = ele.getAttribute(NAME);
830	if (roleName.length() == 0)
831	throw new DomainSpecException(
832	missing_attr_value + "'name'");
833	RTUtil.debugInfo(
834	"parseRoleDeclaration > roleName = " + roleName);
835	boolean isIdentity =
836	RTUtil.parseBoolean(ele.getAttribute(IS_IDENTITY), false);
837
838	int issuerT = RoleDeclaration.DEFAULT_ISSUER_TYPE;
839	int subjectT = RoleDeclaration.DEFAULT_SUBJECT_TYPE;
840
841	RoleDeclaration roleDeclaration = null;
842
843	Element[] elements = getChildElements(ele);
844	int n = elements.length;
845	OrderedMap parameterDeclarations =
846	new OrderedMap(n, String.class, DataType.class);
847	for (int i = 0; i < n; i++)
848	{
849	Element childEle = elements[i];
850	String childName = childEle.getTagName();
851	if (childName.equals(RESTRICTION))
852	{
853	Element baseRoleEle =
854	getFirstChildElementByTagName(
855	childEle,
856	BASE_ROLE);
857	String baseRoleName = baseRoleEle.getAttribute(NAME);
858	if (baseRoleName.length() == 0)
859	throw new DomainSpecException(
860	missing_attr_value + "'name'");
861	String baseRoleDomain =
862	baseRoleEle.getAttribute(DOMAIN);
863	// get base role
864	RoleDeclaration baseRole =
865	currentSpec.lookupRoleDeclaration(
866	baseRoleDomain,
867	baseRoleName);
868	// get new parameters
869	NodeList paramNodes =
870	childEle.getElementsByTagName(PARAMETER);
871	OrderedMap newParameters =
872	transformParameters(paramNodes, currentSpec);
873	roleDeclaration =
874	RoleDeclaration.createRestrictionRole(
875	currentSpec,
876	roleName,
877	isIdentity,
878	baseRole,
879	newParameters);
880	}
881	else if (childName.equals(EXTENSION))
882	{
883	Element baseRoleEle =
884	getFirstChildElementByTagName(
885	childEle,
886	BASE_ROLE);
887	String baseRoleName = baseRoleEle.getAttribute(NAME);
888	if (baseRoleName.length() == 0)
889	throw new DomainSpecException(
890	missing_attr_value + "'name'");
891	String baseRoleDomain =
892	baseRoleEle.getAttribute(DOMAIN);
893	RoleDeclaration baseRole =
894	currentSpec.lookupRoleDeclaration(
895	baseRoleDomain,
896	baseRoleName);
897	NodeList paramNodes =
898	childEle.getElementsByTagName(PARAMETER);
899	OrderedMap newParameters =
900	transformParameters(paramNodes, currentSpec);
901	roleDeclaration =
902	RoleDeclaration.createExtensionRole(
903	currentSpec,
904	roleName,
905	isIdentity,
906	baseRole,
907	newParameters);
908	}
909	else if (childName.equals(PROJECTION))
910	{
911	Element baseRoleEle =
912	getFirstChildElementByTagName(
913	childEle,
914	BASE_ROLE);
915	String baseRoleName = baseRoleEle.getAttribute(NAME);
916	if (baseRoleName.length() == 0)
917	throw new DomainSpecException(
918	missing_attr_value + "'name'");
919	String baseRoleDomain =
920	baseRoleEle.getAttribute(DOMAIN);
921	RoleDeclaration baseRole =
922	currentSpec.lookupRoleDeclaration(
923	baseRoleDomain,
924	baseRoleName);
925	NodeList paramNodes =
926	childEle.getElementsByTagName(PARAMETER);
927	int num = paramNodes.getLength();
928	String[] newParamNames = new String[n];
929	for (int j = 0; j < num; j++)
930	{
931	Element e = (Element) paramNodes.item(j);
932	newParamNames[j] = e.getAttribute(NAME);
933	}
934
935	roleDeclaration =
936	RoleDeclaration.createProjectionRole(
937	currentSpec,
938	roleName,
939	isIdentity,
940	baseRole,
941	newParamNames);
942	}
943	else if (childName.equals(PLAIN))
944	{
945	String issuerTraces =
946	childEle.getAttribute(ISSUER_TRACES);
947	String subjectTraces =
948	childEle.getAttribute(SUBJECT_TRACES);
949	if (issuerTraces.length() != 0)
950	{
951	issuerT =
952	((Integer) (RoleDeclaration
953	.issuerTracesTypes
954	.get(issuerTraces.toLowerCase())))
955	.intValue();
956	}
957	if (subjectTraces.length() != 0)
958	{
959	subjectT =
960	((Integer) (RoleDeclaration
961	.subjectTracesTypes
962	.get(subjectTraces.toLowerCase())))
963	.intValue();
964	}
965	int dimension =
966	RTUtil.parseInt(
967	childEle.getAttribute(DIMENSION),
968	1);
969	Element identityRoleEle =
970	getFirstChildElementByTagName(childEle, IDENTITY);
971	/* TODO
972	String idBaseRoleName = identityRoleEle.getAttribute(NAME);
973	if (idBaseRoleName.length() == 0)
974	throw new DomainSpecException(
975	missing_attr_value + "'name'");
976	String idBaseRoleDomain = identityRoleEle.getAttribute(DOMAIN);
977	RoleDeclaration idBaseRole =
978	currentSpec.lookupRoleDeclaration(
979	idBaseRoleDomain,
980	idBaseRoleName);
981	*/
982
983	NodeList paramNodes =
984	childEle.getElementsByTagName(PARAMETER);
985	OrderedMap newParameters =
986	transformParameters(paramNodes, currentSpec);
987	roleDeclaration =
988	RoleDeclaration.createPlainRole(
989	currentSpec,
990	roleName,
991	issuerT,
992	subjectT,
993	dimension,
994	isIdentity,
995	newParameters);
996	}
997
998	} // end of for loop
999	return roleDeclaration;
1000	}
1001	/**
1002	* Method transformParameters.<br>
1003	* parses <code>Parameter</code> declarations in <code>RoleDeclaration</code> element.
1004	* @param nodes
1005	* the list of <code>Parameter</code> elements
1006	* @return OrderedMap
1007	* an OrderedMap of parameter declarations with parameter names as keys.
1008	*/
1009	private OrderedMap transformParameters(
1010	NodeList nodes,
1011	DomainSpecification currentSpec)
1012	throws DomainSpecException
1013	{
1014	OrderedMap parameterDeclarations =
1015	new OrderedMap(String.class, DataType.class);
1016	int n = nodes.getLength();
1017	for (int i = 0; i < n; i++)
1018	{
1019	Element childEle = (Element) nodes.item(i);
1020	String paramName = childEle.getAttribute(NAME);
1021	RTUtil.debugInfo("paramName = " + paramName);
1022	Element typeRefEle =
1023	getFirstChildElementByTagName(childEle, TYPE);
1024	String domain = typeRefEle.getAttribute(DOMAIN);
1025	//RTUtil.debugInfo("typeDomain = " + domain);
1026	String name = typeRefEle.getAttribute(NAME);
1027	//RTUtil.debugInfo("typeName = " + name);
1028	DataType paramType = currentSpec.lookupType(domain, name);
1029	parameterDeclarations.put(paramName, paramType);
1030	}
1031	return parameterDeclarations;
1032	}
1033
1034	/*###########################################################
1035	#####
1036	##### Parsing Credential or AccessRule
1037	#####
1038	#############################################################*/
1039	/**
1040	* Method transformCredential.<br>
1041	* Returns a <code>CredentialDomain</code> object by parsing element:
1042	* <pre>
1043	* <Credential>
1044	* ...
1045	* </Credential>
1046	* </pre>
1047	* @param ele
1048	* @param rtContext
1049	* @return CredentialDomain
1050	* @throws DomainSpecException
1051	* @throws CredException
1052	*/
1053	public synchronized CredentialDomain transformCredential(
1054	Element ele,
1055	RTContext rtContext)
1056	throws DomainSpecException, CredException
1057	{
1058	if (!ele.getTagName().equals(CREDENTIAL))
1059	throw new DomainSpecException("Not a Credential element.");
1060	String hashID = ele.getAttribute(ID);
1061	if (hashID.length() == 0)
1062	{
1063	//compute hashID
1064	}
1065	RTUtil.debugInfo("HashID = " + hashID);
1066	CredentialDomain credDomain =
1067	new CredentialDomain(ele, rtContext);
1068	HashID id = new HashID(HashID.CREDENTIAL_DOMAIN, hashID);
1069	credDomain.setHashID(id);
1070
1071	Principal issuer = null;
1072
1073	Element[] elements = getChildElements(ele);
1074	for (int i = 0; i < elements.length; i++)
1075	{
1076	Element child = elements[i];
1077	String tagName = child.getTagName();
1078	//RTUtil.debugInfo("***** tagName = " + tagName);
1079	if (tagName.equals(PREAMBLE))
1080	{
1081	Element[] preambleElements = getChildElements(child);
1082	for (int j = 0; j < preambleElements.length; j++)
1083	{
1084	Element preambleChild = preambleElements[j];
1085	String preambleChildTag =
1086	preambleChild.getTagName();
1087	if (preambleChildTag.equals(IMPORT_DOMAIN))
1088	// 0 or more
1089	{
1090	//short name for the imported domain in the scope of this credential.
1091	String name =
1092	preambleChild.getAttribute(NAME);
1093	if (name.length() == 0)
1094	throw new DomainSpecException(
1095	missing_attr_value + "'name'");
1096	RTUtil.debugInfo(
1097	"ImportDomain's name = " + name);
1098	String uri = preambleChild.getAttribute(URI);
1099	RTUtil.debugInfo(
1100	"ImportDomain's uri = " + uri);
1101	String idref =
1102	preambleChild.getAttribute(IDREF);
1103	if (idref.length() == 0)
1104	throw new DomainSpecException(
1105	missing_attr_value + "'idref'");
1106	ApplicationDomain importedDomain =
1107	locateDomain(idref, uri, rtContext);
1108	credDomain.importDomain(name, importedDomain);
1109	}
1110	else if (preambleChildTag.equals(PRINCIPAL))
1111	// 0 or more
1112	{
1113	// To improve readability, the principal, which could be quite long,
1114	// are included in the Preamble so that they can be referred to
1115	// in a compact way elsewhere in the credential by using PrincipalRef.
1116	RTUtil.debugInfo("parsing principle.....");
1117	transformPrincipalValue(
1118	preambleChild,
1119	credDomain);
1120	}
1121	} // end for()..
1122	}
1123	else if (tagName.equals(ISSUER))
1124	{
1125	Element[] prinEle = getChildElements(child);
1126	if (prinEle.length != 1)
1127	throw new DomainSpecException(
1128	improper_sub_element_for + "'Issuer'");
1129	issuer =
1130	transformPrincipalValue(prinEle[0], credDomain)
1131	.getValue();
1132	credDomain.setIssuer(issuer);
1133	}
1134	// else if (tagName.equals(CREDENTIAL_IDENTIFIER))
1135	// {
1136	// // TODO
1137	// throw new UnsupportedOperationException(
1138	// no_support_for + "'CredentialIdentifier'");
1139	// }
1140	else if (tagName.equals(VALIDITY_TIME))
1141	{
1142	//TODO
1143	//ValidityTime validityTime = parseValidityTime(child);
1144	//credDomain.setValidityTime(validityTime);
1145	}
1146	else if (tagName.equals(VALIDITY_RULE))
1147	{
1148	// TODO
1149	throw new UnsupportedOperationException(
1150	no_support_for + "'ValidityRule'");
1151	}
1152	else // ROLE_DEFINITION
1153	{
1154	RoleDefinition roleDef =
1155	transformRoleDefinition(
1156	issuer,
1157	credDomain,
1158	child);
1159	credDomain.addRoleDefinition(roleDef);
1160	}
1161	} //===== End of for(int i=0; i<numOfchildren; i++)....
1162	credDomain.setComplete();
1163	return credDomain;
1164	} //===== End of parseCredential()
1165	/*
1166	Returns an AccessRule object by parsing element:
1167	<pre>
1168	<AccessRule>
1169	...
1170	</AccessRule>
1171	</pre>
1172	*/
1173	public synchronized CredentialDomain transformAccessRule(
1174	Element ele,
1175	RTContext rtContext)
1176	throws DomainSpecException, CredException
1177	{
1178	if (!ele.getTagName().equals(ACCESS_RULE))
1179	throw new DomainSpecException("Not an AccessRule element.");
1180	String hashID = ele.getAttribute(ID);
1181	if (hashID.length() == 0)
1182	{
1183	//compute hashID
1184	}
1185
1186	CredentialDomain ruleDomain =
1187	new CredentialDomain(ele, rtContext);
1188	HashID id = new HashID(HashID.CREDENTIAL_DOMAIN, hashID);
1189	ruleDomain.setHashID(id);
1190
1191	Principal issuer = null;
1192	Element[] elements = getChildElements(ele);
1193	for (int i = 0; i < elements.length; i++)
1194	{
1195	Element child = elements[i];
1196	String tagName = child.getTagName();
1197	if (tagName.equals(PREAMBLE))
1198	{
1199	Element[] preambleElements = getChildElements(child);
1200	for (int j = 0; j < preambleElements.length; j++)
1201	{
1202	Element preambleChild = preambleElements[j];
1203	String preambleChildTag =
1204	preambleChild.getTagName();
1205	if (preambleChildTag.equals(IMPORT_DOMAIN))
1206	// 0 or more
1207	{
1208	String name =
1209	preambleChild.getAttribute(NAME);
1210	if (name.length() == 0)
1211	throw new DomainSpecException(
1212	missing_attr_value + "'name'");
1213	String uri = preambleChild.getAttribute(URI);
1214	String idref =
1215	preambleChild.getAttribute(IDREF);
1216	if (idref.length() == 0)
1217	throw new DomainSpecException(
1218	missing_attr_value + "'idref'");
1219	ApplicationDomain importedDomain =
1220	locateDomain(idref, uri, rtContext);
1221	ruleDomain.importDomain(name, importedDomain);
1222	}
1223	else if (preambleChildTag.equals(PRINCIPAL))
1224	// 0 or more
1225	{
1226	transformPrincipalValue(
1227	preambleChild,
1228	ruleDomain);
1229	}
1230	} // end for()..
1231	}
1232	else if (tagName.equals(RULE_IDENTIFIER))
1233	{
1234	// TODO
1235	throw new UnsupportedOperationException(
1236	no_support_for + "'RuleIdentifier'");
1237	}
1238	else if (tagName.equals(VALIDITY_TIME))
1239	{
1240	// ValidityTime validityTime = parseValidityTime(child);
1241	// accessRule.setValidityTime(validityTime);
1242	}
1243	else
1244	{
1245	RoleDefinition roleDef =
1246	transformRoleDefinition(
1247	issuer,
1248	ruleDomain,
1249	child);
1250	ruleDomain.addRoleDefinition(roleDef);
1251	}
1252	} // End of for(int i=0; i<numOfchildren; i++)....
1253	ruleDomain.setComplete();
1254	return ruleDomain;
1255	} // End of parseAccessRule()
1256
1257	// private parsePrincipalInfo()
1258	// {
1259	// java.security.PublicKey key = null;
1260	//
1261	// Element[] principalElements = getChildElements(elements[0]);
1262	// if (principalElements.length != 1)
1263	// throw new DomainSpecException(
1264	// improper_sub_element_for + "'ds:KeyValue'");
1265	// String tagName = principalElements[0].getTagName();
1266	// if (tagName.equals(DSA_KEY_VALUE))
1267	// {
1268	// try
1269	// {
1270	// DSAKeyValue keyvalue =
1271	// new DSAKeyValue(principalElements[0], null);
1272	// key = keyvalue.getPublicKey();
1273	// }
1274	// catch (XMLSecurityException e)
1275	// {
1276	// e.printStackTrace();
1277	// throw new DomainSpecException(e.getMessage());
1278	// }
1279	//
1280	// res =
1281	// new Principal(
1282	// new KeyValue(new KeyType(KeyType.DSA), key));
1283	// }
1284	// else if (tagName.equals(RSA_KEY_VALUE))
1285	// {
1286	// try
1287	// {
1288	// RSAKeyValue keyvalue =
1289	// new RSAKeyValue(principalElements[0], null);
1290	// key = keyvalue.getPublicKey();
1291	// }
1292	// catch (XMLSecurityException e)
1293	// {
1294	// e.printStackTrace();
1295	// throw new DomainSpecException(e.getMessage());
1296	// }
1297	// res =
1298	// new Principal(
1299	// new KeyValue(new KeyType(KeyType.RSA), key));
1300	// }
1301	// else // any ###other
1302	// {
1303	// // TODO
1304	// }
1305	//
1306	// }
1307	// QQ: Currently CredentialDomain is credential-specific. The good part is that
1308	// the naming needs to be only unique in terms of one credential. However,
1309	// it might be more efficient to have some sort of global environment to
1310	// keep the information commonly shared, such as principal keyvalue.
1311	// For example, in the credential preambel, we could define principals
1312	// in advance for this credential. But different credentials are very
1313	// likely to use same principals. If we have a global env to keep it, then
1314	// we don't need to pass the credDomain around.
1315	/**
1316	* Method transformPrincipalValue.<br>
1317	* @param ele
1318	* @param credDomain
1319	* @return PrincipalValue
1320	* @throws DomainSpecException
1321	*/
1322	private PrincipalValue transformPrincipalValue(
1323	Element ele,
1324	CredentialDomain credDomain)
1325	throws DomainSpecException
1326	{
1327	String tag = ele.getTagName();
1328	if (!tag.equals(PRINCIPAL) && !tag.equals(PRINCIPAL_REF))
1329	throw new DomainSpecException("Not a Principal element");
1330	Principal res = null;
1331	PrincipalValue value = null;
1332	String id = null;
1333	SimpleType principalType = credDomain.getPrincipalType();
1334	if (tag.equals(PRINCIPAL))
1335	{
1336	id = ele.getAttribute(SHORT_NAME);
1337	Element[] elements = getChildElements(ele);
1338	if (elements.length != 1)
1339	throw new DomainSpecException(
1340	improper_sub_element_for + "'Principal'");
1341	String eleTag = elements[0].getTagName();
1342	if (eleTag.equals(INTEGER_VALUE))
1343	{
1344	res =
1345	new DataValuePrincipal(
1346	transformIntegerValue(
1347	(IntegerType) principalType,
1348	elements[0]));
1349	}
1350	else if (eleTag.equals(STRING_VALUE))
1351	{
1352	res =
1353	new DataValuePrincipal(
1354	transformStringValue(
1355	(StringType) principalType,
1356	elements[0]));
1357	}
1358	else if (eleTag.equals(KEY_HASH))
1359	{
1360	Node textNode = elements[0].getFirstChild();
1361	if (textNode.getNodeType()
1362	!= org.w3c.dom.Node.TEXT_NODE)
1363	throw new DomainSpecException("Wrong elements for StringValue");
1364	String hashValue = textNode.getNodeValue();
1365	res = new PublicKeyPrincipal(hashValue);
1366	}
1367	credDomain.addPrincipal(id, res);
1368	}
1369	else if (tag.equals(PRINCIPAL_REF))
1370	{
1371	id = ele.getAttribute(SHORT_NAME);
1372	RTUtil.debugInfo("shortName = " + id);
1373	res = credDomain.getPrincipal(id);
1374	if (res == null)
1375	throw new DomainSpecException("Principal not found");
1376	value = new PrincipalValue(res);
1377	}
1378	return value;
1379	}
1380	/**
1381	* Method transformRoleDefinition.<br>
1382	* Returns a role definition object.
1383
1384	<p>
1385	A role definition may be one the the following elements, i.e.
1386	<b>SimpleMember, SimpleContainment, LinkedContainment, IntersectionContainment,
1387	ProductContainment, ExclusiveProductContainment, SimpleDelegation, or
1388	AdvancedDelegation</b>. Each role definition has a head and a body. The head
1389	part is defined by a HeadRoleTerm. The difference between the above 8
1390	elements lies in the body part.
1391
1392	<P>
1393	The product role definition represented by <b>ProductContainment</b> and
1394	<b>ExclusiveProductContainment</b> has not been supported yet.
1395	* @param issuer
1396	* @param credDomain
1397	* @param ele
1398	* @return RoleDefinition
1399	* @throws CredException
1400	* @throws DomainSpecException
1401	*/
1402	private RoleDefinition transformRoleDefinition(
1403	Principal issuer,
1404	CredentialDomain credDomain,
1405	Element ele)
1406	throws CredException, DomainSpecException
1407	{
1408	RTUtil.debugInfo("parseRoleDefinition().... ");
1409	String tag = ele.getTagName();
1410	RTUtil.debugInfo("parseRoleDefinition()'s tag = " + tag);
1411	if (!tag.equals(SIMPLE_MEMBER)
1412	&& !tag.equals(SIMPLE_CONTAINMENT)
1413	&& !tag.equals(LINKED_CONTAINMENT)
1414	&& !tag.equals(INTERSECTION_CONTAINMENT)
1415	&& !tag.equals(PRODUCT_CONTAINMENT)
1416	&& !tag.equals(EXCLUSIVE_PRODUCT_CONTAINMENT)
1417	&& !tag.equals(SIMPLE_DELEGATION)
1418	&& !tag.equals(ADVANCED_DELEGATION))
1419	throw new DomainSpecException("Not a proper role definition element");
1420	RoleDefinition roleDefinition = null;
1421	if (tag.equals(SIMPLE_DELEGATION)
1422	\|\| tag.equals(ADVANCED_DELEGATION))
1423	{
1424	Element[] elements = getChildElements(ele);
1425	if (elements.length < 2 \|\| elements.length > 3)
1426	throw new DomainSpecException(
1427	improper_sub_element_for + "delegation role");
1428	Element headElement = elements[0];
1429	Element delegateToElement = elements[1];
1430	Element controlElement = null; // optional
1431	if (elements.length == 3)
1432	controlElement = elements[2];
1433	Role head =
1434	new Role(
1435	issuer,
1436	transformRoleTerm(headElement, credDomain));
1437	DelegationRole body =
1438	transformDelegation(
1439	issuer,
1440	credDomain,
1441	delegateToElement,
1442	controlElement);
1443	roleDefinition =
1444	new RoleDefinition(credDomain, head, body);
1445	}
1446	else
1447	{
1448	Element[] elements = getChildElements(ele);
1449	if (elements.length != 2)
1450	throw new DomainSpecException(
1451	improper_sub_element_for + "role definition");
1452	Element headElement = elements[0];
1453	Element bodyElement = elements[1];
1454	Role head =
1455	new Role(
1456	issuer,
1457	transformRoleTerm(headElement, credDomain));
1458	PrincipalExpression body =
1459	transformBody(issuer, credDomain, bodyElement);
1460	roleDefinition =
1461	new RoleDefinition(credDomain, head, body);
1462	}
1463	return roleDefinition;
1464	}
1465	/**
1466	* Method transformBody.<br>
1467	* Returns a PrincipalExpression for the body of a role definition.
1468	<P>
1469	The body can be one of the following: PrincipalValue, RoleTerm,
1470	ExternalRole, LinkedRole, Intersection, Product, or a Delegation.
1471
1472	The method handles all types of the role definition body except the
1473	Delegation role body.
1474	* @param issuer
1475	* @param credDomain
1476	* @param ele
1477	* @return PrincipalExpression
1478	* @throws CredException
1479	* @throws DomainSpecException
1480	*/
1481	private PrincipalExpression transformBody(
1482	Principal issuer,
1483	CredentialDomain credDomain,
1484	Element ele)
1485	throws CredException, DomainSpecException
1486	{
1487	String tag = ele.getTagName();
1488	RTUtil.debugInfo("parseBody() tag = " + tag);
1489	PrincipalExpression prinExp = null;
1490	if (tag.startsWith(PRINCIPAL))
1491	{
1492	prinExp =
1493	transformPrincipalValue(ele, credDomain).getValue();
1494	}
1495	else if (tag.equals(ROLE_TERM))
1496	{
1497	RoleTerm roleTerm = transformRoleTerm(ele, credDomain);
1498	prinExp = new Role(issuer, roleTerm);
1499	}
1500	else if (tag.equals(EXTERNAL_ROLE))
1501	{
1502	prinExp = transformExternalRole(ele, credDomain);
1503	}
1504	else if (tag.equals(LINKED_ROLE))
1505	{
1506	NodeList nodes = ele.getElementsByTagName(ROLE_TERM);
1507	if (nodes.getLength() != 2)
1508	throw new DomainSpecException(
1509	improper_sub_element_for + "'LinkedRole'");
1510	Element roleTermEle1 = (Element) nodes.item(0);
1511	Element roleTermEle2 = (Element) nodes.item(1);
1512	prinExp =
1513	new LinkedRole(
1514	transformRoleTerm(roleTermEle1, credDomain),
1515	transformRoleTerm(roleTermEle2, credDomain));
1516	}
1517	else if (tag.equals(INTERSECTION))
1518	{
1519	prinExp = transformRoleIntersection(ele, credDomain);
1520	}
1521	else if (tag.equals(PRODUCT))
1522	{
1523	// TODO
1524	throw new UnsupportedOperationException(
1525	no_support_for + "'Product'");
1526	}
1527	else if (tag.equals(EXCLUSIVE_PRODUCT))
1528	{
1529	// TODO
1530	throw new UnsupportedOperationException(
1531	no_support_for + "'ExclusiveProduct");
1532	}
1533	return prinExp;
1534	}
1535	/**
1536	* Method transformDelegation.<br>
1537	Returns a DelegationRole object for the body of a role definition
1538	by parsing element: <br>
1539	<pre>
1540	<SimpleDelegation>
1541	...
1542	</SimpleDelegation>
1543
1544	Or
1545
1546	<AdvancedDelegation>
1547	...
1548	</AdvancedDelegation>
1549	</pre>
1550	* @param issuer
1551	* @param credDomain
1552	* @param delegationElement
1553	* @param controlElement
1554	* @return DelegationRole
1555	* @throws DomainSpecException
1556	* @throws CredException
1557	*/
1558	private DelegationRole transformDelegation(
1559	Principal issuer,
1560	CredentialDomain credDomain,
1561	Element delegationElement,
1562	Element controlElement)
1563	throws DomainSpecException, CredException
1564	{
1565	if (!delegationElement.getTagName().equals(DELEGATE_TO))
1566	throw new DomainSpecException("Not a delegateTo element");
1567	if (controlElement != null
1568	&& !controlElement.getTagName().equals(CONTROL))
1569	throw new DomainSpecException("Not a Control element");
1570	PrincipalExpression delegateTo = null;
1571	Role control = null;
1572	// delegateTo
1573	Element[] elements = getChildElements(delegationElement);
1574	for (int i = 0; i < elements.length; i++)
1575	{
1576	Element child = elements[i];
1577	String childName = child.getTagName();
1578	if (childName.startsWith(PRINCIPAL))
1579	{
1580	delegateTo =
1581	transformPrincipalValue(child, credDomain)
1582	.getValue();
1583	}
1584	else if (childName.equals(ROLE_TERM))
1585	{
1586	RoleTerm roleTerm =
1587	transformRoleTerm(child, credDomain);
1588	delegateTo = new Role(issuer, roleTerm);
1589	}
1590	else
1591	{
1592	throw new DomainSpecException(
1593	improper_sub_element_for + "'DelegatTo'");
1594	}
1595	}
1596	// control
1597	if (controlElement != null)
1598	{
1599	elements = getChildElements(controlElement);
1600	for (int i = 0; i < elements.length; i++)
1601	{
1602	Element child = elements[i];
1603	String childName = child.getTagName();
1604	if (childName.equals(ROLE_TERM))
1605	{
1606	RoleTerm roleTerm =
1607	transformRoleTerm(child, credDomain);
1608	control = new Role(issuer, roleTerm);
1609	}
1610	else if (childName.equals(EXTERNAL_ROLE))
1611	{
1612	control =
1613	transformExternalRole(child, credDomain);
1614	}
1615	else
1616	{
1617	throw new DomainSpecException(
1618	improper_sub_element_for + "'Control'");
1619	}
1620	}
1621	}
1622	return new DelegationRole(delegateTo, control);
1623	}
1624	/**
1625	* Method transformExternalRole.<br>
1626	* Returns an ExternalRole object by parsing element:
1627	<pre>
1628	<ExternalRole>
1629	...
1630	</ExternalRole>
1631	</pre>
1632	* @param ele
1633	* @param credDomain
1634	* @return Role
1635	* @throws CredException
1636	* @throws DomainSpecException
1637	*/
1638	private Role transformExternalRole(
1639	Element ele,
1640	CredentialDomain credDomain)
1641	throws CredException, DomainSpecException
1642	{
1643	if (!ele.getTagName().equals(EXTERNAL_ROLE))
1644	throw new DomainSpecException("Not an ExternalRole element.");
1645	Element[] elements = getChildElements(ele);
1646	if (elements.length != 2)
1647	throw new DomainSpecException(
1648	improper_sub_element_for + "'ExternalRole'");
1649	Element prinEle = elements[0];
1650	Element roleTermEle = elements[1];
1651	return new Role(
1652	transformPrincipalValue(prinEle, credDomain).getValue(),
1653	transformRoleTerm(roleTermEle, credDomain));
1654	}
1655	/**
1656	* Method transformRoleIntersection.<br>
1657	* Returns an ExternalRole object by parsing element:
1658	<pre>
1659	<Intersection>
1660	...
1661	</Intersection>
1662	</pre>
1663	* @param ele
1664	* @param credDomain
1665	* @return RoleIntersection
1666	* @throws CredException
1667	* @throws DomainSpecException
1668	*/
1669	private RoleIntersection transformRoleIntersection(
1670	Element ele,
1671	CredentialDomain credDomain)
1672	throws CredException, DomainSpecException
1673	{
1674	if (!ele.getTagName().equals(INTERSECTION))
1675	throw new DomainSpecException("Not an Intersection element.");
1676	RoleIntersection ri = new RoleIntersection();
1677	Element[] elements = getChildElements(ele);
1678	int n = elements.length;
1679	for (int i = 0; i < n; i++)
1680	{
1681	Element child = elements[i];
1682	String childTag = child.getTagName();
1683	if (childTag.equals(ROLE_TERM))
1684	{
1685	ri.and(transformRoleTerm(child, credDomain));
1686	}
1687	else if (childTag.equals(EXTERNAL_ROLE))
1688	{
1689	ri.and(transformExternalRole(child, credDomain));
1690	}
1691	else
1692	{
1693	throw new DomainSpecException(
1694	improper_sub_element_for + "'Intersection'");
1695	}
1696	}
1697	return ri;
1698	}
1699	/**
1700	* Method transformRoleTerm.<br>
1701	* Returns a RoleTerm object by parsing element:
1702	<pre>
1703	<RoleTerm>
1704	...
1705	</RoleTerm>
1706	</pre>
1707	* @param ele
1708	* @param credDomain
1709	* @return RoleTerm
1710	* @throws CredException
1711	* @throws DomainSpecException
1712	*/
1713	private RoleTerm transformRoleTerm(
1714	Element ele,
1715	CredentialDomain credDomain)
1716	throws CredException, DomainSpecException
1717	{
1718	if (!ele.getTagName().equals(HEAD_ROLE_TERM)
1719	&& !ele.getTagName().equals(ROLE_TERM))
1720	throw new DomainSpecException("Not a RoleTerm element.");
1721	String roleName = ele.getAttribute(NAME);
1722	if (roleName.length() == 0)
1723	throw new DomainSpecException(
1724	missing_attr_value + "'name'");
1725	String domain = ele.getAttribute(DOMAIN);
1726	RTUtil.debugInfo("**** roleName = " + roleName);
1727	RTUtil.debugInfo("**** domain = " + domain);
1728	RoleDeclaration roleDecl =
1729	credDomain.lookupRoleDeclaration(domain, roleName);
1730	RoleTerm roleTerm = new RoleTerm(roleDecl);
1731	NodeList children = ele.getElementsByTagName(PARAMETER);
1732	int n = children.getLength();
1733	for (int i = 0; i < n; i++)
1734	{
1735	StringBuffer prefix = new StringBuffer(roleName);
1736	Element paramEle = (Element) children.item(i);
1737	String paramName = paramEle.getAttribute(NAME);
1738	//prefix.append(COLON).append(paramName);
1739	transformParameter(
1740	paramEle,
1741	prefix,
1742	roleTerm,
1743	credDomain);
1744	}
1745	return roleTerm;
1746	}
1747	/**
1748	* Method transformParameter.<br>
1749	parses element:
1750	<pre>
1751	<Parameter name="aa" id="s">
1752	...
1753	</Parameter>
1754	</pre>
1755	* @param ele
1756	* @param prefix
1757	* @param roleTerm
1758	* @param credDomain
1759	* @throws DomainSpecException
1760	*/
1761	//ValueSet
1762	private void transformParameter(
1763	Element ele,
1764	StringBuffer prefix,
1765	RoleTerm roleTerm,
1766	CredentialDomain credDomain)
1767	throws DomainSpecException
1768	{
1769	if (!ele.getTagName().equals(PARAMETER))
1770	throw new DomainSpecException("Not a Parameter element.");
1771	String parameterName = ele.getAttribute(NAME);
1772	if (parameterName.length() == 0)
1773	throw new DomainSpecException(
1774	missing_attr_value + "'name'");
1775	prefix.append(COLON).append(parameterName);
1776	DataType paramType = roleTerm.getParameterType(parameterName);
1777	String id = ele.getAttribute(ID);
1778	RTUtil.debugInfo("transformParameter() id = " + id);
1779	Element[] elements = getChildElements(ele);
1780	if (elements.length > 1)
1781	throw new DomainSpecException(
1782	improper_sub_element_for + "'Parameter'");
1783	if (elements.length == 0)
1784	{
1785	// TODO: Create a null parameter value in this case.
1786	// It is related to Equals Element.
1787	ValueSet nullParameterValue = new ValueSet(paramType);
1788	roleTerm.putParameterValue(
1789	prefix.toString(),
1790	nullParameterValue);
1791	}
1792	else
1793	{
1794	Element valueEle = elements[0];
1795	String tag = valueEle.getTagName();
1796	if (tag.equals(EQUALS))
1797	{
1798	// TODO
1799	throw new UnsupportedOperationException(
1800	no_support_for + "'Equals'");
1801	}
1802	else if (tag.equals(SPECIAL_PRINCIPAL))
1803	{
1804	// TODO
1805	throw new UnsupportedOperationException(
1806	no_support_for + "'SpecialPrincipal'");
1807	}
1808	// the rest of the elements go to ValueSet
1809	else
1810	{
1811	transformValueSetGroup(
1812	paramType,
1813	valueEle,
1814	prefix,
1815	roleTerm,
1816	credDomain);
1817	}
1818	}
1819	}
1820	/**
1821	* Method transformValueSetGroup.<br>
1822	Parses Parameter value elements and stores the prefix and value mapping
1823	in the RoleTerm object.
1824	* @param type
1825	* @param ele
1826	* @param prefix
1827	* @param roleTerm
1828	* @param credDomain
1829	* @throws DomainSpecException
1830	*/
1831	//ValueSet
1832	private void transformValueSetGroup(
1833	DataType type,
1834	Element ele,
1835	StringBuffer prefix,
1836	RoleTerm roleTerm,
1837	CredentialDomain credDomain)
1838	throws DomainSpecException
1839	{
1840	ValueSet parameterValue = null;
1841	String tag = ele.getTagName();
1842
1843	if (tag.equals(TREE_VALUE)) // TreeValueSet
1844	{
1845	parameterValue = transformTreeValue((TreeType) type, ele);
1846	roleTerm.putParameterValue(
1847	prefix.toString(),
1848	parameterValue);
1849	}
1850	else if (tag.equals(INTERVAL)) // IntervalValueSet
1851	{
1852	parameterValue =
1853	transformIntervalValue((OrderedType) type, ele);
1854	roleTerm.putParameterValue(
1855	prefix.toString(),
1856	parameterValue);
1857	}
1858	else if (tag.equals(SET)) // SetValueSet
1859	{
1860	Element[] elements = getChildElements(ele);
1861	String memberTag = elements[0].getTagName();
1862	if (memberTag.equals(INTEGER_VALUE))
1863	{
1864	SetValueSet set = new SetValueSet((IntegerType) type);
1865	IntegerValue v = null;
1866	for (int i = 0; i < elements.length; i++)
1867	{
1868	Element memberEle = elements[i];
1869	v =
1870	transformIntegerValue(
1871	(IntegerType) type,
1872	memberEle);
1873	set.addValue(v);
1874	}
1875	parameterValue = set;
1876	}
1877	else if (memberTag.equals(DECIMAL_VALUE))
1878	{
1879	SetValueSet set = new SetValueSet((DecimalType) type);
1880	DecimalValue v = null;
1881	for (int i = 0; i < elements.length; i++)
1882	{
1883	Element memberEle = elements[i];
1884	v =
1885	transformDecimalValue(
1886	(DecimalType) type,
1887	memberEle);
1888	set.addValue(v);
1889	}
1890	parameterValue = set;
1891	}
1892	else if (memberTag.equals(STRING_VALUE))
1893	{
1894	SetValueSet set = new SetValueSet((StringType) type);
1895	StringValue v = null;
1896	for (int i = 0; i < elements.length; i++)
1897	{
1898	Element memberEle = elements[i];
1899	v =
1900	transformStringValue(
1901	(StringType) type,
1902	memberEle);
1903	set.addValue(v);
1904	}
1905	parameterValue = set;
1906	}
1907	else if (memberTag.equals(ENUM_VALUE))
1908	{
1909	SetValueSet set = new SetValueSet((EnumType) type);
1910	EnumValue v = null;
1911	for (int i = 0; i < elements.length; i++)
1912	{
1913	Element memberEle = elements[i];
1914	v =
1915	transformEnumValue(
1916	(EnumType) type,
1917	memberEle);
1918	set.addValue(v);
1919	}
1920	parameterValue = set;
1921	}
1922	else if (memberTag.startsWith(PRINCIPAL))
1923	{
1924	SetValueSet set = new SetValueSet((KeyType) type);
1925	PrincipalValue v = null;
1926	for (int i = 0; i < elements.length; i++)
1927	{
1928	Element memberEle = elements[i];
1929	v =
1930	transformPrincipalValue(
1931	memberEle,
1932	credDomain);
1933	set.addValue(v);
1934	}
1935	parameterValue = set;
1936	}
1937	roleTerm.putParameterValue(
1938	prefix.toString(),
1939	parameterValue);
1940	}
1941	else if (tag.equals(RECORD)) // Record
1942	{
1943	Element[] elements = getChildElements(ele);
1944	// Fields
1945	for (int i = 0; i < elements.length; i++)
1946	{
1947	StringBuffer newPrefix =
1948	new StringBuffer(prefix.toString());
1949	String fieldName = elements[i].getAttribute(NAME);
1950	if (fieldName.length() == 0)
1951	throw new DomainSpecException(
1952	missing_attr_value + "'name'");
1953	RTUtil.debugInfo(
1954	"transformValueSetGroup.field name = "
1955	+ fieldName);
1956	newPrefix.append(COLON).append(fieldName);
1957	DataType fieldType =
1958	((RecordType) type).getFieldType(fieldName);
1959	if (fieldType != null)
1960	RTUtil.debugInfo(
1961	"transformValueSetGroup.type name = "
1962	+ fieldType.getName());
1963	else
1964	RTUtil.debugInfo(
1965	"transformValueSetGroup.type = null");
1966	Element valueEle = getChildElements(elements[i])[0];
1967	// recurrsion
1968	transformValueSetGroup(
1969	fieldType,
1970	valueEle,
1971	newPrefix,
1972	roleTerm,
1973	credDomain);
1974	}
1975	}
1976	else // SingletonValueSet
1977	{
1978	transformValueGroup(
1979	(SimpleType) type,
1980	ele,
1981	prefix,
1982	roleTerm,
1983	credDomain);
1984	}
1985	} // end of transformValueSetGroup()
1986	/**
1987	* Method transformValueGroup.<br>
1988	Parses Value choice group, which can be one of the following:
1989	IntegerValue, DecimalValue, StringValue, EnumValue, TimeValue,
1990	or PrincipalValue.
1991	* @param type
1992	* @param ele
1993	* @param prefix
1994	* @param roleTerm
1995	* @param credDomain
1996	* @throws DomainSpecException
1997	*/
1998	//SingletonValueSet
1999	private void transformValueGroup(
2000	SimpleType type,
2001	Element ele,
2002	StringBuffer prefix,
2003	RoleTerm roleTerm,
2004	CredentialDomain credDomain)
2005	throws DomainSpecException
2006	{
2007	SingletonValueSet value = null;
2008	String tag = ele.getTagName();
2009	if (tag.equals(INTEGER_VALUE))
2010	{
2011	value =
2012	new SingletonValueSet(
2013	(IntegerType) type,
2014	transformIntegerValue((IntegerType) type, ele));
2015	roleTerm.putParameterValue(prefix.toString(), value);
2016	}
2017	else if (tag.equals(DECIMAL_VALUE))
2018	{
2019	value =
2020	new SingletonValueSet(
2021	(DecimalType) type,
2022	transformDecimalValue((DecimalType) type, ele));
2023	roleTerm.putParameterValue(prefix.toString(), value);
2024	}
2025	else if (tag.equals(STRING_VALUE))
2026	{
2027	value =
2028	new SingletonValueSet(
2029	(StringType) type,
2030	transformStringValue((StringType) type, ele));
2031	roleTerm.putParameterValue(prefix.toString(), value);
2032	}
2033	else if (tag.equals(ENUM_VALUE))
2034	{
2035	value =
2036	new SingletonValueSet(
2037	(EnumType) type,
2038	transformEnumValue((EnumType) type, ele));
2039	roleTerm.putParameterValue(prefix.toString(), value);
2040	}
2041	else if (tag.equals(TIME_VALUE))
2042	{
2043	// TODO
2044	//throw new UnsupportedOperationException(no_support_for+"'TimeValue'");
2045	//roleTerm.putParameterValue(prefix.toString(), valu
2046	}
2047	else if (tag.startsWith(PRINCIPAL))
2048	{
2049	value =
2050	new SingletonValueSet(
2051	credDomain.getPrincipalType(),
2052	transformPrincipalValue(ele, credDomain));
2053	roleTerm.putParameterValue(prefix.toString(), value);
2054	}
2055	} // end of transformValueGroup()
2056	/**
2057	* Method transformIntervalValue.<br>
2058	Returns an IntervalValue object by parsing element:
2059	<pre>
2060	<Interval includeMin="true" includeMax="true">
2061	<min> ... </min>
2062	<max> ... </max>
2063	</Interval>
2064	</pre>
2065	* @param type
2066	* @param ele
2067	* @return IntervalValueSet
2068	* @throws DomainSpecException
2069	*/
2070	private IntervalValueSet transformIntervalValue(
2071	OrderedType type,
2072	Element ele)
2073	throws DomainSpecException
2074	{
2075	if (!ele.getTagName().equals(INTERVAL))
2076	throw new DomainSpecException("Not an Interval element");
2077	Element fromEle = getFirstChildElementByTagName(ele, FROM);
2078	Element toEle = getFirstChildElementByTagName(ele, TO);
2079	Element e1 = null, e2 = null;
2080	if (fromEle != null)
2081	e1 = getFirstChildElement(fromEle);
2082	if (toEle != null)
2083	e2 = getFirstChildElement(toEle);
2084	if (e1 != null && e2 != null)
2085	{
2086	if (!e1.getTagName().equals(e2.getTagName()))
2087	throw new DomainSpecException(
2088	improper_sub_element_for + "'Interval'");
2089	}
2090	DataValue min = null, max = null;
2091	if (e1 != null)
2092	min = transformOrderedValue(type, e1);
2093	if (e2 != null)
2094	max = transformOrderedValue(type, e2);
2095	return new IntervalValueSet(type, min, max);
2096	}
2097	/**
2098	* Method transformOrderedValue.<br>
2099	Returns DataValue by parsing elements:
2100	<pre>
2101	<IntegerValue> ... </IntegerValue> or
2102
2103	<DecimalValue> ... </DecimalValue> or
2104
2105	<StirngValue> ... </StringValue> or
2106
2107	<EnumValue> ... </EnumValue> or
2108
2109	<TimeValue> ... </timeValue>
2110	</pre>
2111	* @param type
2112	* @param ele
2113	* @return DataValue
2114	* @throws DomainSpecException
2115	*/
2116	private DataValue transformOrderedValue(
2117	OrderedType type,
2118	Element ele)
2119	throws DomainSpecException
2120	{
2121	DataValue value = null;
2122	String tag = ele.getTagName();
2123	if (tag.equals(INTEGER_VALUE))
2124	{
2125	value = transformIntegerValue((IntegerType) type, ele);
2126	}
2127	if (tag.equals(DECIMAL_VALUE))
2128	{
2129	value = transformDecimalValue((DecimalType) type, ele);
2130	}
2131	if (tag.equals(STRING_VALUE))
2132	{
2133	value = transformStringValue((StringType) type, ele);
2134	}
2135	if (tag.equals(ENUM_VALUE))
2136	{
2137	value = transformEnumValue((EnumType) type, ele);
2138	}
2139	if (tag.equals(TIME_VALUE))
2140	{
2141	//value = transformTimeValue((TimeType)type, ele);
2142	}
2143	return value;
2144	}
2145	/**
2146	* Method transformIntegerValue.<br>
2147	Returns an IntegerValue object by parsing element:
2148	<pre>
2149	<IntegerValue>
2150	123
2151	</IntegerValue>
2152	</pre>
2153	* @param type
2154	* @param ele
2155	* @return IntegerValue
2156	* @throws DomainSpecException
2157	*/
2158	private IntegerValue transformIntegerValue(
2159	IntegerType type,
2160	Element ele)
2161	throws DomainSpecException
2162	{
2163	if (!ele.getTagName().equals(INTEGER_VALUE))
2164	throw new DomainSpecException("Not an IntegerValue element.");
2165	Node textNode = ele.getFirstChild();
2166	if (textNode.getNodeType() != org.w3c.dom.Node.TEXT_NODE)
2167	throw new DomainSpecException("Wrong elements for StringValue");
2168	IntegerValue value =
2169	new IntegerValue(textNode.getNodeValue());
2170	// Type checking.
2171	if (type != null && !type.isValidValue(value))
2172	throw new DomainSpecException(
2173	illegal_value_for + "IntegerType :" + type.getName());
2174	return value;
2175	}
2176	/**
2177	* Method transformDecimalValue.<br>
2178	Returns a DecimalValue object by parsing element:
2179	<pre>
2180	<DecimalValue>
2181	123
2182	</DecimalValue>
2183	</pre>
2184	* @param type
2185	* @param ele
2186	* @return DecimalValue
2187	* @throws DomainSpecException
2188	*/
2189	private DecimalValue transformDecimalValue(
2190	DecimalType type,
2191	Element ele)
2192	throws DomainSpecException
2193	{
2194	if (!ele.getTagName().equals(DECIMAL_VALUE))
2195	throw new DomainSpecException("Wrong element");
2196	Node textNode = ele.getFirstChild();
2197	if (textNode.getNodeType() != org.w3c.dom.Node.TEXT_NODE)
2198	throw new DomainSpecException("Wrong elements for StringValue");
2199	DecimalValue value =
2200	new DecimalValue(textNode.getNodeValue());
2201	// Type checking.
2202	if (type != null && !type.isValidValue(value))
2203	throw new DomainSpecException(
2204	illegal_value_for + "DecimalType :" + type.getName());
2205	return value;
2206	}
2207	/**
2208	* Method transformStringValue.<br>
2209	Returns a StringValue object by parsing element:
2210	<pre>
2211	<StringValue>
2212	123
2213	</StringValue>
2214	</pre>
2215	* @param type
2216	* @param ele
2217	* @return StringValue
2218	* @throws DomainSpecException
2219	*/
2220	private StringValue transformStringValue(
2221	StringType type,
2222	Element ele)
2223	throws DomainSpecException
2224	{
2225	if (!ele.getTagName().equals(STRING_VALUE))
2226	throw new DomainSpecException("Not a StringValue element");
2227	Node textNode = ele.getFirstChild();
2228	if (textNode.getNodeType() != org.w3c.dom.Node.TEXT_NODE)
2229	throw new DomainSpecException(
2230	improper_sub_element_for + "'StringValue'");
2231	StringValue value = new StringValue(textNode.getNodeValue());
2232	// Type checking.
2233	if (type != null && !type.isValidValue(value))
2234	throw new DomainSpecException(
2235	illegal_value_for + "StringType :" + type.getName());
2236	return value;
2237	}
2238	/**
2239	* Method transformEnumValue.<br>
2240	Returns an EnumValue object by parsing element:
2241	<pre>
2242	<EnumValue>
2243	123
2244	</EnumValue>
2245	</pre>
2246	* @param type
2247	* @param ele
2248	* @return EnumValue
2249	* @throws DomainSpecException
2250	*/
2251	private EnumValue transformEnumValue(EnumType type, Element ele)
2252	throws DomainSpecException
2253	{
2254	if (!ele.getTagName().equals(ENUM_VALUE))
2255	throw new DomainSpecException("Not an EnumValue element");
2256	Node textNode = ele.getFirstChild();
2257	if (textNode.getNodeType() != org.w3c.dom.Node.TEXT_NODE)
2258	throw new DomainSpecException(
2259	improper_sub_element_for + "'EnumValue'");
2260	EnumValue value =
2261	new EnumValue(textNode.getNodeValue());
2262	// Type checking.
2263	if (type != null && !type.isValidValue(value))
2264	{
2265	RTUtil.debugInfo(
2266	"transformEnumValue() type name = " + type.getName());
2267	RTUtil.debugInfo(
2268	"transformEnumValue() value = " + value.toString());
2269	throw new DomainSpecException(
2270	illegal_value_for + "EnumType :" + type.getName());
2271	}
2272	return value;
2273	}
2274	/**
2275	* Method transformTreeValue.<br>
2276	Returns a TreeValueSet object by parsing element:
2277	<pre>
2278	<TreeValue includeCurrent="true"
2279	includeChildren="true"
2280	includeDescendents="false">
2281	cs.stanford.edu
2282	</TreeValue>
2283	</pre>
2284	* @param type
2285	* @param ele
2286	* @return TreeValueSet
2287	* @throws DomainSpecException
2288	*/
2289	private TreeValueSet transformTreeValue(
2290	TreeType type,
2291	Element ele)
2292	throws DomainSpecException
2293	{
2294	if (!ele.getTagName().equals(TREE_VALUE))
2295	throw new DomainSpecException("Not a TreeValue element");
2296	Node textNode = ele.getFirstChild();
2297	if (textNode.getNodeType() != org.w3c.dom.Node.TEXT_NODE)
2298	throw new DomainSpecException(
2299	improper_sub_element_for + "'TreeValue'");
2300	boolean includeCurrent =
2301	RTUtil.parseBoolean(
2302	ele.getAttribute(INCLUDE_CURRENT),
2303	true);
2304	boolean includeChildren =
2305	RTUtil.parseBoolean(
2306	ele.getAttribute(INCLUDE_CHILDREN),
2307	false);
2308	boolean includeDescendents =
2309	RTUtil.parseBoolean(
2310	ele.getAttribute(INCLUDE_DESCENDENTS),
2311	false);
2312	String value = textNode.getNodeValue();
2313	String separator = type.getSeparator();
2314	StringTokenizer st = new StringTokenizer(value, separator);
2315	int size = st.countTokens();
2316	ArrayList values = new ArrayList(size);
2317	while (st.hasMoreTokens())
2318	{
2319	values.add((String) st.nextToken());
2320	}
2321	TreeValue res = new TreeValue(type, values);
2322	// Type checking.
2323	if (type != null && !type.isValidValue(res))
2324	throw new DomainSpecException(
2325	illegal_value_for + "TreeType :" + type.getName());
2326	return new TreeValueSet(
2327	(TreeType) type,
2328	res,
2329	includeCurrent,
2330	includeChildren,
2331	includeDescendents);
2332	}
2333	/**
2334	* Method transformTimeValue.<br>
2335	Returns a TimeValue object by parsing element:
2336	<pre>
2337	<TimeValue>
2338	2002-08-29T09:31:32
2339	</TimeValue>
2340	</pre>
2341	* @param type
2342	* @param ele
2343	* @return TimeValue
2344	* @throws DomainSpecException
2345	*/
2346	private TimeValue transformTimeValue(TimeType type, Element ele)
2347	throws DomainSpecException
2348	{
2349	if (!ele.getTagName().equals(TIME_VALUE))
2350	throw new DomainSpecException("Not a TimeValue element");
2351	Node textNode = ele.getFirstChild();
2352	if (textNode.getNodeType() != org.w3c.dom.Node.TEXT_NODE)
2353	throw new DomainSpecException(
2354	improper_sub_element_for + "'TimeValue'");
2355	String dateString = textNode.getNodeValue();
2356	String typeName = type.getName();
2357	TimeValue value =
2358	new TimeValue(
2359	typeName,
2360	transformDateTime(typeName, dateString));
2361	return value;
2362	}
2363	/**
2364	* Method transformDateTime.<br>
2365	Returns a java.uti.Date object from the given XML Schema datetype name
2366	and the dateTime stirng.
2367
2368	By using Sun XML Datetype Library, we validate dateTime against
2369	the corresonding datetype specified by typeName. DomainSpecExeption is
2370	thrown when validation fails.
2371	* @param typeName
2372	* @param dateTime
2373	* @return Date
2374	* @throws DomainSpecException
2375	*/
2376	private Date transformDateTime(String typeName, String dateTime)
2377	throws DomainSpecException
2378	{
2379	com.sun.msv.datatype.xsd.XSDatatype type = null;
2380	try
2381	{
2382	com.sun.msv.datatype.xsd.DatatypeFactory.getTypeByName(
2383	typeName);
2384	}
2385	catch (org.relaxng.datatype.DatatypeException e)
2386	{
2387	throw new DomainSpecException(
2388	"Cannot recognize type " + typeName);
2389	}
2390	if (!type.isValid(dateTime, null))
2391	throw new DomainSpecException(
2392	illegal_value_for + type.getName());
2393	// for datetype, the corresponding Java object is Calendar.
2394	Calendar dtObject =
2395	(Calendar) type.createJavaObject(dateTime, null);
2396	Class dtClass = type.getJavaObjectType();
2397	RTUtil.debugInfo(
2398	"paseDateTime()> dtClass = " + dtClass.getName());
2399	return dtObject.getTime();
2400	}
2401	/*
2402	TreeValue parseDateTimeOld(String typeName, String dateTime)
2403	throws DomainSpecException
2404	{
2405
2406	XSDatatype = DatatypeFactory.getTypeByName(tu
2407
2408	string regExp;
2409	String s = dateTime.trim();
2410
2411	if(typeName.equals("dateTime"))
2412	{
2413	regExp = "\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}";
2414	int tIndex = s.indexOf('T');
2415
2416	}
2417	else if (typeName.equals("date"))
2418	{
2419	}
2420	else if (typeName.equals("time"))
2421	{
2422	}
2423	else if(typeName.equals("gYear"))
2424	{
2425	}
2426	else if(typeName.equals("gYearMonth"))
2427	{
2428	}
2429	else if(typeName.equals("gMonth"))
2430	{
2431	}
2432	else if(typeName.equals("gMonthDay"))
2433	{
2434	}
2435	else if(typeName.equals("gDay"))
2436	{
2437	}
2438
2439	// Issue: Not sure how to handle the optional time zone part, so ignore it for now.
2440	// The following is an attempt to match the time zone.
2441	// "\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}(Z\|((+\|\\0x2D)[0-2][0-9]:[0-2][0-9]))?
2442
2443	if(! s.matches(regExp))
2444	throw new DomainSpecException("'"+dateTime+
2445	"' is no in the format of 'CCYY-MM-DDThh:mm:ss'");
2446	String year = s.substring(0, 4);
2447	if(! RTUtil.validYear(year))
2448	throw new DomainSecException("Invalid year '" + year + "'");
2449	String month = s.substring(5, 8);
2450	if(! RTUtil.validMonth(month))
2451	throw new DomainSpecException("Invalid month '" + month+"'");
2452	String day = s.substring(9, 11);
2453	if(! RTUtil.validDay(year, month, day))
2454	throw new DomainSpecException("Invalid day '" + day +
2455	"' in month '"+month+"'");
2456	String hour = s.substring(12, 14);
2457	if(! RTUtil.validHour(hour))
2458	throw new DomainSpecException("Invalid hour '"+hour+"'");
2459	String minute = s.substring(15, 17);
2460	if(! RTUtil.validMinSec(minute))
2461	throw new DomainSpecException("Invalid minute '"+minute+"'");
2462	String second = s.substring(18, 20);
2463	if(! RTUtil.validMinSec(second))
2464	throw new DomainSpecException("Invalid second '"+second+"'");
2465	//String timeZone = s.substring(22);
2466
2467
2468	Date date = null;
2469	try
2470	{
2471	Calendar calendar = Calendar.getInstance();
2472	calendar.set(Integer.parseInt(year), Integer.parseInt(month),
2473	Integer.parseInt(day), Integer.parseInt(hour),
2474	Integer.parseInt(minute), Integer.parseInt(second));
2475	date = calendar.getTime();
2476	}
2477	catch(NumberFormatException e)
2478	{
2479	// Because month, day, hour, minute, second has been validated
2480	// it should never reach here.
2481	}
2482
2483	return ;
2484	}
2485	*/
2486	// DatatypeValidator validator = getDatatypeValidator("dateTime");
2487	// try
2488	// {
2489	// validator.validate(dateTime, null);
2490	// }
2491	// catch(InvalidDatatypeValueException e)
2492	// {
2493	//
2494	// }
2495	//
2496	//
2497	// int year = date[0], month = date[1], day = date[2],
2498	// hour = date[3], minute = date[4], second = date[5];
2499	// // Issue: what to do with the time zone?
2500	//
2501	// Calendar calendar = Calendar.getInstance();
2502	// calendar.set(year, month, day, hour, minute, second);
2503	// return calendar.getTime();
2504
2505	// private ValidityTime parseValidityTime(Element ele)
2506	// throws DomainSpecException
2507	// {
2508	// if(! ele.getTagName().equals(VALIDITY_TIME))
2509	// throw new DomainSpecException("Not a ValidityTime element");
2510	//
2511	// Element[] elements = getChildElements(ele);
2512	// if(elements.length != 3)
2513	// throw new DomainSpecException(
2514	// improper_sub_element_for + "'ValidityTime'");
2515	//
2516	// String issueAt = getFirstChildElementByTagName(ele, ISSUE_AT).getNodeValue();
2517	// String validFrom = getFirstChildElementByTagName(ele, VALID_FROM).getNodeValue();
2518	// String validTo = getFirstChildElementByTagName(ele, VALID_TO).getNodeValue();
2519	//
2520	// return new ValidityTime(RTUtil.parseDateTime(issueAt),
2521	// RTUtil.parseDateTime(validFrom),
2522	// RTUtil.parseDateTime(validTo));
2523	// }
2524
2525	} // End of Class RTParser.

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