[8780cbec] | 1 | package edu.stanford.rt.credential; |
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| 2 | |
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| 3 | import java.util.*; |
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| 4 | |
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| 5 | import edu.stanford.rt.util.*; |
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| 6 | import edu.stanford.rt.datatype.*; |
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| 7 | |
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| 8 | /** |
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| 9 | * @author Ninghui Li, Sandra Qiu<br> |
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| 10 | * |
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| 11 | * Implementation of <code>RoleTerm</code> element. Each RoleTerm object |
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| 12 | * has a reference to its corresponding RoleDeclaration object and stores |
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| 13 | * its parameter values, if any. |
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| 14 | * |
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| 15 | */ |
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| 16 | public class RoleTerm |
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| 17 | { |
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| 18 | // The corresponding role declaration. |
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| 19 | private RoleDeclaration roleDeclaration; |
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| 20 | |
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| 21 | // Stores parameter values according to the prefix positions in role declaration. |
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| 22 | private ValueSet[] paramValues; |
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| 23 | |
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| 24 | /** |
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| 25 | * Constructor for RoleTerm. |
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| 26 | * |
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| 27 | * @param roleDeclaration |
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| 28 | * corresponding role declaration. |
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| 29 | */ |
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| 30 | public RoleTerm(RoleDeclaration roleDeclaration) |
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| 31 | { |
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| 32 | this.roleDeclaration = roleDeclaration; |
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| 33 | this.paramValues = |
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| 34 | new ValueSet[roleDeclaration.getTotalPrefixes() + 1]; |
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| 35 | this.paramValues[0] = null; |
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| 36 | } |
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| 37 | |
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| 38 | /** |
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| 39 | * Returns the roleDeclaration. |
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| 40 | * @return RoleDeclaration |
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| 41 | * The corresonding role decalration for this role term. |
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| 42 | */ |
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| 43 | public RoleDeclaration getRoleDeclaration() |
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| 44 | { |
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| 45 | return roleDeclaration; |
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| 46 | } |
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| 47 | |
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| 48 | /** |
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| 49 | * Method putParameterValue. |
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| 50 | * puts parameter value according to the position of the |
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| 51 | * its prefix. |
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| 52 | * @param prefix |
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| 53 | * the parameter prefix |
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| 54 | * @param parameterValue |
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| 55 | * the parameter value |
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| 56 | */ |
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| 57 | public void putParameterValue( |
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| 58 | String prefix, |
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| 59 | ValueSet parameterValue) |
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| 60 | { |
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| 61 | //RTUtil.debugInfo("RoleTerm.putParameterValue().roleDeclaration = " |
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| 62 | // +roleDeclaration.getName()); |
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| 63 | RTUtil.debugInfo( |
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| 64 | "RoleTerm.putParameterValue().prefix = " + prefix); |
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| 65 | |
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| 66 | int index = roleDeclaration.getPosition(prefix); |
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| 67 | RTUtil.debugInfo( |
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| 68 | "RoleTerm.putParameterValue().index = " + index); |
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| 69 | // empty element for index 0 |
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| 70 | paramValues[index] = parameterValue; |
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| 71 | } |
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| 72 | |
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| 73 | /** |
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| 74 | * Method getParameterValue. |
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| 75 | * @param prefix |
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| 76 | * @return ValueSet |
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| 77 | */ |
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| 78 | public ValueSet getParameterValue(String prefix) |
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| 79 | { |
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| 80 | int index = roleDeclaration.getPosition(prefix); |
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| 81 | return paramValues[index]; |
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| 82 | } |
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| 83 | |
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| 84 | /** |
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| 85 | * Method getParameterValueAt. |
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| 86 | * @param index |
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| 87 | * @return ValueSet |
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| 88 | */ |
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| 89 | public ValueSet getParameterValueAt(int index) |
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| 90 | { |
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| 91 | return paramValues[index]; |
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| 92 | } |
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| 93 | |
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| 94 | /** |
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| 95 | * Method getParameterType. |
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| 96 | * @param parameterName |
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| 97 | * @return DataType |
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| 98 | * @throws DomainSpecException |
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| 99 | */ |
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| 100 | public DataType getParameterType(String parameterName) |
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| 101 | throws DomainSpecException |
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| 102 | { |
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| 103 | return roleDeclaration.getParameterType(parameterName); |
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| 104 | } |
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| 105 | |
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| 106 | public String toString(String indent) |
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| 107 | { |
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| 108 | String thisIndent = indent + " "; |
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| 109 | StringBuffer sb = new StringBuffer(); |
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| 110 | sb.append(thisIndent).append("RoleTerm: \n"); |
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| 111 | sb.append(thisIndent + " ").append( |
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| 112 | "Corresponding role declaration: "); |
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| 113 | sb.append(roleDeclaration.getName()).append("\n"); |
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| 114 | sb.append(thisIndent + " ").append("Parameters: \n"); |
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| 115 | for (int i = 1; i < paramValues.length; i++) |
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| 116 | { |
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| 117 | if (paramValues[i] != null |
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| 118 | && !isParameterValueNull(paramValues[i])) |
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| 119 | sb |
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| 120 | .append(thisIndent + " ") |
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| 121 | .append(paramValues[i].toString(thisIndent)) |
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| 122 | .append("\n"); |
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| 123 | } |
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| 124 | |
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| 125 | return sb.toString(); |
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| 126 | } |
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| 127 | |
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| 128 | /** |
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| 129 | * Method isParameterValueNull. |
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| 130 | * checks if the parameter value is null. It can be null when |
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| 131 | * the parameter has <code>Equals</code> or <code>Special Principal</code> |
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| 132 | * child element. |
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| 133 | * @param paramValue |
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| 134 | * @return boolean |
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| 135 | */ |
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| 136 | public boolean isParameterValueNull(ValueSet paramValue) |
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| 137 | { |
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| 138 | if (paramValue == null) |
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| 139 | return true; |
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| 140 | |
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| 141 | if (!(paramValue instanceof TreeValueSet) |
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| 142 | && !(paramValue instanceof IntervalValueSet) |
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| 143 | && !(paramValue instanceof SetValueSet) |
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| 144 | && !(paramValue instanceof SingletonValueSet)) |
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| 145 | return true; |
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| 146 | else |
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| 147 | return false; |
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| 148 | } |
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| 149 | |
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| 150 | |
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| 151 | |
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| 152 | } |
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