001: /*
002: * The Apache Software License, Version 1.1
003: *
004: * Copyright (c) 1999 The Apache Software Foundation. All rights
005: * reserved.
006: *
007: * Redistribution and use in source and binary forms, with or without
008: * modification, are permitted provided that the following conditions
009: * are met:
010: *
011: * 1. Redistributions of source code must retain the above copyright
012: * notice, this list of conditions and the following disclaimer.
013: *
014: * 2. Redistributions in binary form must reproduce the above copyright
015: * notice, this list of conditions and the following disclaimer in
016: * the documentation and/or other materials provided with the
017: * distribution.
018: *
019: * 3. The end-user documentation included with the redistribution, if
020: * any, must include the following acknowlegement:
021: * "This product includes software developed by the
022: * Apache Software Foundation (http://www.apache.org/)."
023: * Alternately, this acknowlegement may appear in the software itself,
024: * if and wherever such third-party acknowlegements normally appear.
025: *
026: * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
027: * Foundation" must not be used to endorse or promote products derived
028: * from this software without prior written permission. For written
029: * permission, please contact apache@apache.org.
030: *
031: * 5. Products derived from this software may not be called "Apache"
032: * nor may "Apache" appear in their names without prior written
033: * permission of the Apache Group.
034: *
035: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
036: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
037: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
038: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
039: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
040: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
041: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
042: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
043: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
044: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
045: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
046: * SUCH DAMAGE.
047: * ====================================================================
048: *
049: * This software consists of voluntary contributions made by many
050: * individuals on behalf of the Apache Software Foundation. For more
051: * information on the Apache Software Foundation, please see
052: * <http://www.apache.org/>.
053: *
054: */
055: package com.sun.portal.providers.jsp.jasper3.jasper.compiler;
056:
057: import java.lang.reflect.Constructor;
058:
059: import java.util.Hashtable;
060:
061: import javax.servlet.jsp.tagext.TagLibraryInfo;
062: import javax.servlet.jsp.tagext.TagInfo;
063: import javax.servlet.jsp.tagext.Tag;
064:
065: import com.sun.portal.providers.jsp.jasper3.jasper.Constants;
066: import com.sun.portal.providers.jsp.jasper3.jasper.JasperException;
067:
068: /**
069: * A container for all tag libraries that have been imported using
070: * the taglib directive.
071: *
072: * @author Anil K. Vijendran
073: * @author Mandar Raje
074: */
075: public class TagLibraries {
076:
077: public TagLibraries(ClassLoader cl) {
078: this .tagLibInfos = new Hashtable();
079: this .tagCaches = new Hashtable();
080: this .cl = cl;
081: }
082:
083: public void addTagLibrary(String prefix, TagLibraryInfo tli) {
084: tagLibInfos.put(prefix, tli);
085: }
086:
087: public boolean isUserDefinedTag(String prefix, String shortTagName)
088: throws JasperException {
089: TagLibraryInfo tli = (TagLibraryInfo) tagLibInfos.get(prefix);
090: if (tli == null)
091: return false;
092: else if (tli.getTag(shortTagName) != null)
093: return true;
094: throw new JasperException(Constants.getString(
095: "jsp.error.bad_tag", new Object[] { shortTagName,
096: prefix }));
097: }
098:
099: public TagLibraryInfo getTagLibInfo(String prefix) {
100: return (TagLibraryInfo) tagLibInfos.get(prefix);
101: }
102:
103: public TagCache getTagCache(String prefix, String shortTagName) {
104: return (TagCache) tagCaches
105: .get(new TagID(prefix, shortTagName));
106: }
107:
108: public void putTagCache(String prefix, String shortTagName,
109: TagCache tc) {
110: tagCaches.put(new TagID(prefix, shortTagName), tc);
111: }
112:
113: private Hashtable tagLibInfos;
114: private Hashtable tagCaches;
115: private ClassLoader cl;
116:
117: private static class TagID {
118:
119: private String prefix;
120: private String shortTagName;
121:
122: public TagID(String prefix, String shortTagName) {
123: this .prefix = prefix;
124: this .shortTagName = shortTagName;
125: }
126:
127: public boolean equals(Object obj) {
128: return (prefix.equals(((TagID) obj).prefix))
129: && (shortTagName.equals(((TagID) obj).shortTagName));
130: }
131:
132: public int hashCode() {
133: return prefix.hashCode() + shortTagName.hashCode();
134: }
135: }
136: }
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