/*
* Copyright 2013, The Sporting Exchange Limited
*
* Licensed 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 com.betfair.cougar.codegen;
import java.io.File;
import java.io.InputStream;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.xml.sax.EntityResolver;
import com.betfair.cougar.codegen.except.PluginException;
public class XmlUtil {
/**
* Parse an XML document (with appropriate flags for our purposes) from the given stream.
*
* @param is input stream containing the document
* @param resolver resolver to be used for parsing
*
* @throws PluginException for all errors
*/
public static Document parse(InputStream is, EntityResolver resolver) {
try {
DocumentBuilder parser = createParser(resolver);
return parser.parse(is);
}
catch (Exception e) {
throw new PluginException("Error parsing XML document from input stream: " + e, e);
}
}
/**
* Parse an XML document (with appropriate flags for our purposes) from the file.
*
* @param xmlFile file to be parsed.
* @param resolver resolver to be used for parsing
* @throws PluginException for all errors
*/
public static Document parse(File xmlFile, EntityResolver resolver) {
try {
DocumentBuilder parser = createParser(resolver);
return parser.parse(xmlFile);
}
catch (Exception e) {
throw new PluginException("Error parsing XML document '" + xmlFile + "': " + e, e);
}
}
private static DocumentBuilder createParser(EntityResolver resolver) throws Exception {
DocumentBuilderFactory dbfactory = DocumentBuilderFactory.newInstance();
// standard flags needed for our parsing
dbfactory.setNamespaceAware(true);
dbfactory.setXIncludeAware(true);
DocumentBuilder parser = dbfactory.newDocumentBuilder();
parser.setEntityResolver(resolver);
return parser;
}
}