001: /*
002: * $Id: DocumentBuilderFactoryImpl.java,v 1.5 2001/06/20 02:40:27 edwingo Exp $
003: *
004: * The Apache Software License, Version 1.1
005: *
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 "Xerces" and "Apache Software Foundation" must
030: * 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: * nor may "Apache" appear in their name, without prior written
036: * 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 and was
054: * originally based on software copyright (c) 1999, Sun Microsystems, Inc.,
055: * http://www.sun.com. For more information on the Apache Software
056: * Foundation, please see <http://www.apache.org/>.
057: */
058:
059: package org.apache.xerces.jaxp;
060:
061: import javax.xml.parsers.DocumentBuilderFactory;
062: import javax.xml.parsers.DocumentBuilder;
063: import javax.xml.parsers.ParserConfigurationException;
064:
065: import org.xml.sax.SAXException;
066:
067: import java.util.Hashtable;
068:
069: import org.apache.xerces.parsers.DOMParser;
070:
071: /**
072: * @author Rajiv Mordani
073: * @author Edwin Goei
074: * @version $Revision: 1.5 $
075: */
076: public class DocumentBuilderFactoryImpl extends DocumentBuilderFactory {
077: /** These are DocumentBuilderFactory attributes not DOM attributes */
078: private Hashtable attributes;
079:
080: public DocumentBuilderFactoryImpl() {
081:
082: }
083:
084: /**
085: *
086: */
087: public DocumentBuilder newDocumentBuilder()
088: throws ParserConfigurationException {
089: try {
090: return new DocumentBuilderImpl(this , attributes);
091: } catch (SAXException se) {
092: // Handles both SAXNotSupportedException, SAXNotRecognizedException
093: throw new ParserConfigurationException(se.getMessage());
094: }
095: }
096:
097: /**
098: * Allows the user to set specific attributes on the underlying
099: * implementation.
100: */
101: public void setAttribute(String name, Object value)
102: throws IllegalArgumentException {
103: // XXX This is ugly. We have to collect the attributes and then
104: // later create a DocumentBuilderImpl to verify the attributes.
105: if (attributes == null) {
106: attributes = new Hashtable();
107: }
108: attributes.put(name, value);
109:
110: // Test the attribute name by possibly throwing an exception
111: try {
112: new DocumentBuilderImpl(this , attributes);
113: } catch (Exception e) {
114: attributes.remove(name);
115: throw new IllegalArgumentException(e.getMessage());
116: }
117: }
118:
119: /**
120: * Allows the user to retrieve specific attributes on the underlying
121: * implementation.
122: */
123: public Object getAttribute(String name)
124: throws IllegalArgumentException {
125: DOMParser domParser = null;
126:
127: try {
128: // We create a dummy DocumentBuilderImpl in case the attribute
129: // name is not one that is in the attributes hashtable.
130: domParser = new DocumentBuilderImpl(this , attributes)
131: .getDOMParser();
132: return domParser.getProperty(name);
133: } catch (SAXException se1) {
134: // assert(name is not recognized or not supported), try feature
135: try {
136: boolean result = domParser.getFeature(name);
137: // Must have been a feature
138: return new Boolean(result);
139: } catch (SAXException se2) {
140: // Not a property or a feature
141: throw new IllegalArgumentException(se1.getMessage());
142: }
143: }
144: }
145: }
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