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13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
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24  */
25 
26 package com.sun.xml.internal.xsom.impl;
27 
28 import com.sun.xml.internal.xsom.XSDeclaration;
29 
30 import java.util.Comparator;
31 
32 /**
33  * UName.
34  *
35  * @author Kohsuke Kawaguchi (kk@kohsuke.org)
36  */
37 public final class UName {
38     /**
39      * @param _nsUri
40      *      Use "" to indicate the no namespace.
41      */
UName( String _nsUri, String _localName, String _qname )42     public UName( String _nsUri, String _localName, String _qname ) {
43         if(_nsUri==null || _localName==null || _qname==null) {
44             throw new NullPointerException(_nsUri+" "+_localName+" "+_qname);
45         }
46         this.nsUri = _nsUri.intern();
47         this.localName = _localName.intern();
48         this.qname = _qname.intern();
49     }
50 
UName( String nsUri, String localName )51     public UName( String nsUri, String localName ) {
52         this(nsUri,localName,localName);
53     }
54 
UName(XSDeclaration decl)55     public UName(XSDeclaration decl) {
56         this(decl.getTargetNamespace(),decl.getName());
57     }
58 
59     private final String nsUri;
60     private final String localName;
61     private final String qname;
62 
getName()63     public String getName() { return localName; }
getNamespaceURI()64     public String getNamespaceURI() { return nsUri; }
getQualifiedName()65     public String getQualifiedName() { return qname; }
66 
67 
68     // Issue 540; XSComplexType.getAttributeUse(String,String) always return null
69     // UName was used in HashMap without overriden equals and hashCode methods.
70 
71     @Override
equals(Object obj)72     public boolean equals(Object obj) {
73         if(obj instanceof UName) {
74             UName u = (UName)obj;
75 
76             return ((this.getName().compareTo(u.getName()) == 0) &&
77                     (this.getNamespaceURI().compareTo(u.getNamespaceURI()) == 0) &&
78                     (this.getQualifiedName().compareTo(u.getQualifiedName()) == 0));
79         } else {
80             return false;
81         }
82     }
83 
84     @Override
hashCode()85     public int hashCode() {
86         int hash = 7;
87         hash = 13 * hash + (this.nsUri != null ? this.nsUri.hashCode() : 0);
88         hash = 13 * hash + (this.localName != null ? this.localName.hashCode() : 0);
89         hash = 13 * hash + (this.qname != null ? this.qname.hashCode() : 0);
90         return hash;
91     }
92 
93     /**
94      * Compares {@link UName}s by their names.
95      */
96     public static final Comparator comparator = new Comparator() {
97         public int compare(Object o1, Object o2) {
98             UName lhs = (UName)o1;
99             UName rhs = (UName)o2;
100             int r = lhs.nsUri.compareTo(rhs.nsUri);
101             if(r!=0)    return r;
102             return lhs.localName.compareTo(rhs.localName);
103         }
104     };
105 }
106