com.ibm.jbatch.jsl.util.ValidatorHelper Maven / Gradle / Ivy
/*
* Copyright 2012 International Business Machines Corp.
*
* See the NOTICE file distributed with this work for additional information
* regarding copyright ownership. 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.ibm.jbatch.jsl.util;
import java.net.URL;
import javax.xml.XMLConstants;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import org.xml.sax.SAXException;
public class ValidatorHelper {
// Unofficially packaged in this RI
public final static String SCHEMA_LOCATION = "xsd/jobXML_2_0.xsd";
private static Schema schema = null;
private static SchemaFactory sf =
SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
/**
* This method must be synchronized as SchemaFactory is not thread-safe
*/
public static synchronized Schema getXJCLSchema() {
if (schema == null) {
try {
URL url = ValidatorHelper.class.getResource("/" + SCHEMA_LOCATION);
schema = sf.newSchema(url);
} catch (SAXException e) {
throw new RuntimeException(e);
}
}
return schema;
}
}