org.apache.batchee.container.jsl.JobModelResolver 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 org.apache.batchee.container.jsl;
import org.apache.batchee.jaxb.JSLJob;
import javax.batch.operations.BatchRuntimeException;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Unmarshaller;
import javax.xml.transform.stream.StreamSource;
import java.io.StringReader;
import java.security.AccessController;
import java.security.PrivilegedAction;
public class JobModelResolver {
private static final JAXBContext JOB_CONTEXT;
static {
try {
JOB_CONTEXT = JAXBContext.newInstance(JSLJob.class.getPackage().getName());
} catch (final JAXBException e) {
throw new BatchRuntimeException(e);
}
}
private JSLJob unmarshalJobXML(final String jobXML) {
final JSLJob result;
final JSLValidationEventHandler handler = new JSLValidationEventHandler();
try {
final Unmarshaller u = JOB_CONTEXT.createUnmarshaller();
u.setSchema(Xsds.jobXML());
u.setEventHandler(handler);
result = u.unmarshal(new StreamSource(new StringReader(jobXML)), JSLJob.class).getValue();
} catch (final JAXBException e) {
throw new IllegalArgumentException("Exception unmarshalling jobXML", e);
}
if (handler.eventOccurred()) {
throw new IllegalArgumentException("xJCL invalid per schema");
}
return result;
}
public JSLJob resolveModel(final String jobXML) {
if (System.getSecurityManager() == null) {
return unmarshalJobXML(jobXML);
}
return AccessController.doPrivileged(
new PrivilegedAction() {
public JSLJob run() {
return unmarshalJobXML(jobXML);
}
});
}
}
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