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Java > Open Source Codes > com > sun > org > apache > xerces > internal > jaxp > validation > ReadonlyGrammarPool


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57 package com.sun.org.apache.xerces.internal.jaxp.validation;
58
59 import com.sun.org.apache.xerces.internal.xni.grammars.Grammar;
60 import com.sun.org.apache.xerces.internal.xni.grammars.XMLGrammarDescription;
61 import com.sun.org.apache.xerces.internal.xni.grammars.XMLGrammarPool;
62
63 /**
64  * Filter {@link XMLGrammarPool} that exposes a read-only view
65  * of the underlying pool.
66  *
67  * @author
68  * Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
69  */
70 public class ReadonlyGrammarPool implements XMLGrammarPool {
71     
72     private final XMLGrammarPool core;
73     
74     public ReadonlyGrammarPool( XMLGrammarPool pool ) {
75         this.core = pool;
76     }
77     
78     public void cacheGrammars(String JavaDoc grammarType, Grammar[] grammars) {
79         ; // noop. don't let caching to happen
80 }
81
82     public void clear() {
83         ; // noop. cache is read-only.
84 }
85
86     public void lockPool() {
87         ; // noop. this pool is always read-only
88 }
89
90     public Grammar retrieveGrammar(XMLGrammarDescription desc) {
91         return core.retrieveGrammar(desc);
92     }
93
94     public Grammar[] retrieveInitialGrammarSet(String JavaDoc grammarType) {
95         return core.retrieveInitialGrammarSet(grammarType);
96     }
97
98     public void unlockPool() {
99         ; // noop. this pool is always read-only.
100 }
101
102 }
103
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