001: /*
002: * $Id: PatternCacheFIFO.java,v 1.7 2003/11/07 20:16:24 dfs Exp $
003: *
004: * ====================================================================
005: * The Apache Software License, Version 1.1
006: *
007: * Copyright (c) 2000 The Apache Software Foundation. All rights
008: * reserved.
009: *
010: * Redistribution and use in source and binary forms, with or without
011: * modification, are permitted provided that the following conditions
012: * are met:
013: *
014: * 1. Redistributions of source code must retain the above copyright
015: * notice, this list of conditions and the following disclaimer.
016: *
017: * 2. Redistributions in binary form must reproduce the above copyright
018: * notice, this list of conditions and the following disclaimer in
019: * the documentation and/or other materials provided with the
020: * distribution.
021: *
022: * 3. The end-user documentation included with the redistribution,
023: * if any, must include the following acknowledgment:
024: * "This product includes software developed by the
025: * Apache Software Foundation (http://www.apache.org/)."
026: * Alternately, this acknowledgment may appear in the software itself,
027: * if and wherever such third-party acknowledgments normally appear.
028: *
029: * 4. The names "Apache" and "Apache Software Foundation", "Jakarta-Oro"
030: * must not be used to endorse or promote products derived from this
031: * software without prior written permission. For written
032: * permission, please contact apache@apache.org.
033: *
034: * 5. Products derived from this software may not be called "Apache"
035: * or "Jakarta-Oro", nor may "Apache" or "Jakarta-Oro" appear in their
036: * name, without prior written permission of the Apache Software Foundation.
037: *
038: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
039: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
040: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
041: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
042: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
043: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
044: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
045: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
046: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
047: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
048: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
049: * SUCH DAMAGE.
050: * ====================================================================
051: *
052: * This software consists of voluntary contributions made by many
053: * individuals on behalf of the Apache Software Foundation. For more
054: * information on the Apache Software Foundation, please see
055: * <http://www.apache.org/>.
056: */
057:
058: package org.apache.oro.text;
059:
060: import java.util.*;
061:
062: import org.apache.oro.text.regex.*;
063: import org.apache.oro.util.*;
064:
065: /**
066: * This class is a GenericPatternCache subclass implementing a FIFO (First
067: * In First Out) cache replacement policy. In other words, patterns are
068: * added to the cache until the cache becomes full. Once the cache is full,
069: * if a new pattern is added to the cache, it replaces the first of
070: * the current patterns in the cache to have been added.
071: *
072: * @version @version@
073: * @since 1.0
074: * @see GenericPatternCache
075: */
076: public final class PatternCacheFIFO extends GenericPatternCache {
077:
078: /**
079: * Creates a PatternCacheFIFO instance with a given cache capacity,
080: * initialized to use a given PatternCompiler instance as a pattern compiler.
081: * <p>
082: * @param capacity The capacity of the cache.
083: * @param compiler The PatternCompiler to use to compile patterns.
084: */
085: public PatternCacheFIFO(int capacity, PatternCompiler compiler) {
086: super (new CacheFIFO(capacity), compiler);
087: }
088:
089: /**
090: * Same as:
091: * <blockquote><pre>
092: * PatternCacheFIFO(GenericPatternCache.DEFAULT_CAPACITY, compiler);
093: * </pre></blockquote>
094: */
095: public PatternCacheFIFO(PatternCompiler compiler) {
096: this (GenericPatternCache.DEFAULT_CAPACITY, compiler);
097: }
098:
099: /**
100: * Same as:
101: * <blockquote><pre>
102: * PatternCacheFIFO(capacity, new Perl5Compiler());
103: * </pre></blockquote>
104: */
105: public PatternCacheFIFO(int capacity) {
106: this (capacity, new Perl5Compiler());
107: }
108:
109: /**
110: * Same as:
111: * <blockquote><pre>
112: * PatternCacheFIFO(GenericPatternCache.DEFAULT_CAPACITY);
113: * </pre></blockquote>
114: */
115: public PatternCacheFIFO() {
116: this(GenericPatternCache.DEFAULT_CAPACITY);
117: }
118:
119: }
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