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Java > Open Source Codes > com > sun > org > apache > xml > internal > resolver > tools > ResolvingXMLReader


1 // ResolvingXMLReader.java - An XMLReader that performs catalog resolution
2
3 /*
4  * Copyright 2001-2004 The Apache Software Foundation or its licensors,
5  * as applicable.
6  *
7  * Licensed under the Apache License, Version 2.0 (the "License");
8  * you may not use this file except in compliance with the License.
9  * You may obtain a copy of the License at
10  *
11  * http://www.apache.org/licenses/LICENSE-2.0
12  *
13  * Unless required by applicable law or agreed to in writing, software
14  * distributed under the License is distributed on an "AS IS" BASIS,
15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16  * See the License for the specific language governing permissions and
17  * limitations under the License.
18  */
19
20 package com.sun.org.apache.xml.internal.resolver.tools;
21
22 import org.xml.sax.*;
23
24 import javax.xml.parsers.*;
25
26 import com.sun.org.apache.xml.internal.resolver.*;
27
28 /**
29  * A SAX XMLReader that performs catalog-based entity resolution.
30  *
31  * <p>This class implements a SAX XMLReader that performs entity resolution
32  * using the CatalogResolver. The actual, underlying parser is obtained
33  * from a SAXParserFactory.</p>
34  * </p>
35  *
36  * @see CatalogResolver
37  * @see org.xml.sax.XMLReader
38  *
39  * @author Norman Walsh
40  * <a HREF="mailto:Norman.Walsh@Sun.COM">Norman.Walsh@Sun.COM</a>
41  *
42  * @version 1.0
43  */
44 public class ResolvingXMLReader extends ResolvingXMLFilter {
45   /** Make the parser Namespace aware? */
46   public static boolean namespaceAware = true;
47
48   /** Make the parser validating? */
49   public static boolean validating = false;
50
51   /**
52    * Construct a new reader from the JAXP factory.
53    *
54    * <p>In order to do its job, a ResolvingXMLReader must in fact be
55    * a filter. So the only difference between this code and the filter
56    * code is that the constructor builds a new reader.</p>
57    */
58   public ResolvingXMLReader() {
59     super();
60     SAXParserFactory spf = SAXParserFactory.newInstance();
61     spf.setNamespaceAware(namespaceAware);
62     spf.setValidating(validating);
63     try {
64       SAXParser parser = spf.newSAXParser();
65       setParent(parser.getXMLReader());
66     } catch (Exception JavaDoc ex) {
67       ex.printStackTrace();
68     }
69   }
70
71   /**
72    * Construct a new reader from the JAXP factory.
73    *
74    * <p>In order to do its job, a ResolvingXMLReader must in fact be
75    * a filter. So the only difference between this code and the filter
76    * code is that the constructor builds a new reader.</p>
77    */
78   public ResolvingXMLReader(CatalogManager manager) {
79     super(manager);
80     SAXParserFactory spf = SAXParserFactory.newInstance();
81     spf.setNamespaceAware(namespaceAware);
82     spf.setValidating(validating);
83     try {
84       SAXParser parser = spf.newSAXParser();
85       setParent(parser.getXMLReader());
86     } catch (Exception JavaDoc ex) {
87       ex.printStackTrace();
88     }
89   }
90 }
91
92
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