[8780cbec] | 1 | package edu.stanford.rt.credential; |
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| 2 | import edu.stanford.rt.datatype.*; |
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| 3 | /** |
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| 4 | * @author Ninghui Li, Sandra Qiu<br> |
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| 5 | * |
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| 6 | * This class handles <code>Principal</code> element, which consists of |
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| 7 | * IntegerValue or StringValue. |
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| 8 | */ |
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| 9 | public class DataValuePrincipal extends Principal |
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| 10 | { |
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| 11 | /** |
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| 12 | * the principal value, which could be an integer or a string. |
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| 13 | */ |
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| 14 | private DataValue value; |
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| 15 | |
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| 16 | /** |
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| 17 | * Constructor for DataValuePrincipal. |
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| 18 | * |
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| 19 | * Contruct a Principal object using a DataValue object. |
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| 20 | * DomainSpecException is thrown if value passed in is not an instance of |
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| 21 | * IntegerValue, StringValue, or KeyValue. |
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| 22 | * <br> |
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| 23 | * <code>IllegalArgumentException</code> is thrown if value |
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| 24 | * is not of <code>IntegerValue</code> or <code>StringValue</code> type. |
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| 25 | */ |
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| 26 | public DataValuePrincipal(DataValue value) |
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| 27 | { |
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| 28 | if (!(value instanceof IntegerValue) |
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| 29 | && !(value instanceof StringValue)) |
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| 30 | throw new IllegalArgumentException("Illegal argument"); |
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| 31 | |
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| 32 | this.value = value; |
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| 33 | } |
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| 34 | /** |
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| 35 | * Method getValue. |
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| 36 | * @return DataValue |
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| 37 | */ |
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| 38 | public DataValue getValue() |
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| 39 | { |
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| 40 | return value; |
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| 41 | } |
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| 42 | /* (non-Javadoc) |
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| 43 | * @see java.lang.Object#toString() |
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| 44 | */ |
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| 45 | public String toString() |
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| 46 | { |
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| 47 | return value.toString(); |
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| 48 | } |
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| 49 | /* (non-Javadoc) |
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| 50 | * @see java.lang.Object#hashCode() |
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| 51 | */ |
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| 52 | public int hashCode() |
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| 53 | { |
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| 54 | return value.hashCode(); |
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| 55 | } |
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| 56 | /* (non-Javadoc) |
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| 57 | * @see java.lang.Object#equals(Object) |
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| 58 | */ |
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| 59 | public boolean equals(Object value) |
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| 60 | { |
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| 61 | if (!(value instanceof IntegerValue) |
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| 62 | && !(value instanceof StringValue)) |
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| 63 | return false; |
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| 64 | |
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| 65 | if (value instanceof IntegerValue) |
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| 66 | { |
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| 67 | if (!(value instanceof IntegerValue)) |
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| 68 | return false; |
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| 69 | else |
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| 70 | return this.hashCode() == value.hashCode(); |
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| 71 | } |
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| 72 | else |
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| 73 | { |
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| 74 | if (!(value instanceof StringValue)) |
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| 75 | return false; |
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| 76 | else |
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| 77 | return this.hashCode() == value.hashCode(); |
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| 78 | } |
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| 79 | } |
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| 80 | |
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| 81 | /* (non-Javadoc) |
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| 82 | * @see edu.stanford.rt.credential.PrincipalExpression#toString(String) |
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| 83 | */ |
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| 84 | public String toString(String indent) |
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| 85 | { |
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| 86 | String thisIndent = indent + " "; |
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| 87 | return thisIndent + "DataValuePrincipal: " + value.toString(); |
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| 88 | } |
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| 89 | } |
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