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Java > Open Source Codes > org > apache > tomcat > util > collections > MultiMapValuesEnumeration


1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17
18 package org.apache.tomcat.util.collections;
19
20 import java.util.Enumeration JavaDoc;
21
22 import org.apache.tomcat.util.buf.MessageBytes;
23
24 /** Enumerate the values for a (possibly ) multiple
25  * value element.
26  */
27 class MultiMapValuesEnumeration implements Enumeration JavaDoc {
28     int pos;
29     int size;
30     MessageBytes next;
31     MultiMap headers;
32     String JavaDoc name;
33
34     MultiMapValuesEnumeration(MultiMap headers, String JavaDoc name,
35                   boolean toString) {
36         this.name=name;
37     this.headers=headers;
38     pos=0;
39     size = headers.size();
40     findNext();
41     }
42
43     private void findNext() {
44     next=null;
45     for( ; pos< size; pos++ ) {
46         MessageBytes n1=headers.getName( pos );
47         if( n1.equalsIgnoreCase( name )) {
48         next=headers.getValue( pos );
49         break;
50         }
51     }
52     pos++;
53     }
54     
55     public boolean hasMoreElements() {
56     return next!=null;
57     }
58
59     public Object JavaDoc nextElement() {
60     MessageBytes current=next;
61     findNext();
62     return current.toString();
63     }
64 }
65
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