/*
* 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.tuscany.sca.common.xml.sax;
import java.io.IOException;
import java.io.StringReader;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.core.FactoryExtensionPoint;
import org.apache.tuscany.sca.core.UtilityExtensionPoint;
import org.xml.sax.ContentHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
/**
* Helper class for SAX parsing
*/
public class SAXHelper {
private final SAXParserFactory saxParserFactory;
/**
* @param saxParserFactory
*/
public SAXHelper(SAXParserFactory saxParserFactory) {
super();
this.saxParserFactory = saxParserFactory;
}
public SAXHelper(ExtensionPointRegistry registry) {
FactoryExtensionPoint factories = registry.getExtensionPoint(FactoryExtensionPoint.class);
saxParserFactory = factories.getFactory(SAXParserFactory.class);
saxParserFactory.setNamespaceAware(true);
}
public SAXHelper getInstance(ExtensionPointRegistry registry) {
UtilityExtensionPoint utilities = registry.getExtensionPoint(UtilityExtensionPoint.class);
return utilities.getUtility(SAXHelper.class);
}
public SAXParser newSAXParser() throws SAXException {
try {
return saxParserFactory.newSAXParser();
} catch (ParserConfigurationException e) {
throw new IllegalArgumentException(e);
}
}
public XMLReader newXMLReader() throws SAXException {
return newSAXParser().getXMLReader();
}
public void parse(String xmlString, ContentHandler handler) throws SAXException, IOException {
XMLReader reader = newXMLReader();
reader.setContentHandler(handler);
reader.parse(new InputSource(new StringReader(xmlString)));
}
}