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Java > Open Source Codes > com > sun > cli > util > stringifier > IteratorStringifierBase


1 /*
2  * The contents of this file are subject to the terms
3  * of the Common Development and Distribution License
4  * (the License). You may not use this file except in
5  * compliance with the License.
6  *
7  * You can obtain a copy of the license at
8  * https://glassfish.dev.java.net/public/CDDLv1.0.html or
9  * glassfish/bootstrap/legal/CDDLv1.0.txt.
10  * See the License for the specific language governing
11  * permissions and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL
14  * Header Notice in each file and include the License file
15  * at glassfish/bootstrap/legal/CDDLv1.0.txt.
16  * If applicable, add the following below the CDDL Header,
17  * with the fields enclosed by brackets [] replaced by
18  * you own identifying information:
19  * "Portions Copyrighted [year] [name of copyright owner]"
20  *
21  * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
22  */
23  
24 /*
25  * $Header: /cvs/glassfish/admin-cli/cli-api/src/java/com/sun/cli/util/stringifier/IteratorStringifierBase.java,v 1.3 2005/12/25 03:46:03 tcfujii Exp $
26  * $Revision: 1.3 $
27  * $Date: 2005/12/25 03:46:03 $
28  */
29  
30 package com.sun.cli.util.stringifier;
31
32 import java.util.Iterator JavaDoc;
33
34
35 /*
36     Stringifies an array, using an optional array element Stringifier
37  */
38  
39 public abstract class IteratorStringifierBase implements Stringifier
40 {
41     public final String JavaDoc mDelim;
42     public final Stringifier mElementStringifier;
43     
44         public
45     IteratorStringifierBase( )
46     {
47         this( ObjectStringifier.DEFAULT );
48     }
49     
50         public
51     IteratorStringifierBase( String JavaDoc delim )
52     {
53         this( delim, new SmartStringifier( delim ) );
54     }
55     
56         public
57     IteratorStringifierBase( Stringifier elementStringifier )
58     {
59         this( ",", elementStringifier );
60     }
61     
62         public
63     IteratorStringifierBase( String JavaDoc delim, Stringifier elementStringifier )
64     {
65         mDelim = delim;
66         mElementStringifier = elementStringifier;
67     }
68     
69         public String JavaDoc
70     stringify( Object JavaDoc o )
71     {
72         assert( o != null );
73         Iterator JavaDoc iter = (Iterator JavaDoc)o;
74         
75         return( this.stringify( iter, mDelim, mElementStringifier ) );
76     }
77     
78     
79     /*
80         Subclass may choose to override this.
81      */
82         public abstract void
83     stringifyElement(
84         Object JavaDoc elem,
85         String JavaDoc delim,
86         StringBuffer JavaDoc buf);
87         
88         
89     
90         public String JavaDoc
91     stringify( Iterator JavaDoc iter, String JavaDoc delim, Stringifier stringifier )
92     {
93         assert( iter != null );
94         
95         StringBuffer JavaDoc buf = new StringBuffer JavaDoc();
96     
97         while ( iter.hasNext() )
98         {
99             final Object JavaDoc elem = iter.next();
100             assert( elem != null );
101             
102             stringifyElement( elem, delim, buf );
103         }
104         
105         // strip trailing delimiter
106 final int length = buf.length();
107         if ( length != 0 )
108         {
109             buf.setLength( length - delim.length() );
110         }
111
112         return( buf.toString() );
113     }
114     
115     /*
116         Static variant when direct call will suffice.
117      */
118         public static String JavaDoc
119     stringify( Iterator JavaDoc iter, String JavaDoc delim )
120     {
121         final IteratorStringifier stringifier = new IteratorStringifier( delim );
122         
123         return( stringifier.stringify( iter, delim, SmartStringifier.DEFAULT ) );
124     }
125     
126     public final static IteratorStringifier DEFAULT = new IteratorStringifier( "," );
127 }
128
129
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