/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jackrabbit.core.config;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import org.xml.sax.EntityResolver;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
/**
* Entity resolver for Jackrabbit configuration files.
* This simple resolver contains mappings for the following
* public identifiers used for the Jackrabbit configuration files:
* <ul>
* <li><code>-//The Apache Software Foundation//DTD Jackrabbit 2.6//EN</code></li>
* <li><code>-//The Apache Software Foundation//DTD Jackrabbit 2.4//EN</code></li>
* <li><code>-//The Apache Software Foundation//DTD Jackrabbit 2.0//EN</code></li>
* <li><code>-//The Apache Software Foundation//DTD Jackrabbit 1.6//EN</code></li>
* <li><code>-//The Apache Software Foundation//DTD Jackrabbit 1.5//EN</code></li>
* <li><code>-//The Apache Software Foundation//DTD Jackrabbit 1.4//EN</code></li>
* <li><code>-//The Apache Software Foundation//DTD Jackrabbit 1.2//EN</code></li>
* <li><code>-//The Apache Software Foundation//DTD Jackrabbit 1.0//EN</code></li>
* </ul>
* <p>
* Also the following system identifiers are mapped to local resources:
* <ul>
* <li><code>http://jackrabbit.apache.org/dtd/repository-2.6.dtd</code></li>
* <li><code>http://jackrabbit.apache.org/dtd/repository-2.4.dtd</code></li>
* <li><code>http://jackrabbit.apache.org/dtd/repository-2.0.dtd</code></li>
* <li><code>http://jackrabbit.apache.org/dtd/repository-1.6.dtd</code></li>
* <li><code>http://jackrabbit.apache.org/dtd/repository-1.5.dtd</code></li>
* <li><code>http://jackrabbit.apache.org/dtd/repository-1.4.dtd</code></li>
* <li><code>http://jackrabbit.apache.org/dtd/repository-1.2.dtd</code></li>
* <li><code>http://jackrabbit.apache.org/dtd/repository-1.0.dtd</code></li>
* </ul>
* <p>
* The public identifiers are mapped to document type definition
* files included in the Jackrabbit jar archive.
*/
public class ConfigurationEntityResolver implements EntityResolver {
/**
* The singleton instance of this class.
*/
public static final EntityResolver INSTANCE =
new ConfigurationEntityResolver();
/**
* Public identifiers.
*/
private final Map<String, String> publicIds = new HashMap<String, String>();
/**
* System identifiers.
*/
private final Map<String, String> systemIds = new HashMap<String, String>();
/**
* Creates the singleton instance of this class.
*/
private ConfigurationEntityResolver() {
// Apache Jackrabbit 2.6 DTD
publicIds.put(
"-//The Apache Software Foundation//DTD Jackrabbit 2.6//EN",
"repository-2.6.dtd");
systemIds.put(
"http://jackrabbit.apache.org/dtd/repository-2.6.dtd",
"repository-2.6.dtd");
publicIds.put(
"-//The Apache Software Foundation//DTD Jackrabbit 2.6 Elements//EN",
"repository-2.6-elements.dtd");
systemIds.put(
"http://jackrabbit.apache.org/dtd/repository-2.6-elements.dtd",
"repository-2.6-elements.dtd");
// Apache Jackrabbit 2.4 DTD
publicIds.put(
"-//The Apache Software Foundation//DTD Jackrabbit 2.4//EN",
"repository-2.4.dtd");
systemIds.put(
"http://jackrabbit.apache.org/dtd/repository-2.4.dtd",
"repository-2.4.dtd");
publicIds.put(
"-//The Apache Software Foundation//DTD Jackrabbit 2.4 Elements//EN",
"repository-2.4-elements.dtd");
systemIds.put(
"http://jackrabbit.apache.org/dtd/repository-2.4-elements.dtd",
"repository-2.4-elements.dtd");
// Apache Jackrabbit 2.0 DTD
publicIds.put(
"-//The Apache Software Foundation//DTD Jackrabbit 2.0//EN",
"repository-2.0.dtd");
systemIds.put(
"http://jackrabbit.apache.org/dtd/repository-2.0.dtd",
"repository-2.0.dtd");
publicIds.put(
"-//The Apache Software Foundation//DTD Jackrabbit 2.0 Elements//EN",
"repository-2.0-elements.dtd");
systemIds.put(
"http://jackrabbit.apache.org/dtd/repository-2.0-elements.dtd",
"repository-2.0-elements.dtd");
// Apache Jackrabbit 1.6 DTD
publicIds.put(
"-//The Apache Software Foundation//DTD Jackrabbit 1.6//EN",
"repository-1.6.dtd");
systemIds.put(
"http://jackrabbit.apache.org/dtd/repository-1.6.dtd",
"repository-1.6.dtd");
// Apache Jackrabbit 1.5 DTD
publicIds.put(
"-//The Apache Software Foundation//DTD Jackrabbit 1.5//EN",
"repository-1.5.dtd");
systemIds.put(
"http://jackrabbit.apache.org/dtd/repository-1.5.dtd",
"repository-1.5.dtd");
// Apache Jackrabbit 1.4 DTD
publicIds.put(
"-//The Apache Software Foundation//DTD Jackrabbit 1.4//EN",
"repository-1.4.dtd");
systemIds.put(
"http://jackrabbit.apache.org/dtd/repository-1.4.dtd",
"repository-1.4.dtd");
// Apache Jackrabbit 1.2 DTD
publicIds.put(
"-//The Apache Software Foundation//DTD Jackrabbit 1.2//EN",
"repository-1.2.dtd");
systemIds.put(
"http://jackrabbit.apache.org/dtd/repository-1.2.dtd",
"repository-1.2.dtd");
// Apache Jackrabbit 1.0 DTD
publicIds.put(
"-//The Apache Software Foundation//DTD Jackrabbit 1.0//EN",
"repository-1.0.dtd");
systemIds.put(
"http://jackrabbit.apache.org/dtd/repository-1.0.dtd",
"repository-1.0.dtd");
}
/**
* Resolves an entity to the corresponding input source.
*
* @param publicId public identifier
* @param systemId system identifier
* @return resolved entity source
* @throws SAXException on SAX errors
* @throws IOException on IO errors
*/
public InputSource resolveEntity(String publicId, String systemId)
throws SAXException, IOException {
String name;
name = publicIds.get(publicId);
if (name != null) {
InputStream stream = getClass().getResourceAsStream(name);
if (stream != null) {
return new InputSource(stream);
}
}
name = systemIds.get(systemId);
if (name != null) {
InputStream stream = getClass().getResourceAsStream(name);
if (stream != null) {
return new InputSource(stream);
}
}
return null;
}
}