/* * Copyright 2009 Federal Chancellery Austria and * Graz University of Technology * * 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 at.gv.egiz.bku.slcommands; import javax.xml.bind.JAXBContext; import javax.xml.bind.JAXBException; import javax.xml.bind.Marshaller; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import at.gv.egiz.bku.slexceptions.SLRuntimeException; import at.gv.egiz.marshal.MarshallerFactory; public class SLMarshallerFactory { static Log log = LogFactory.getLog(SLMarshallerFactory.class); /** * The JAXBContext used for result marshaling. *
* Note: Different contexts are used for marshaling and unmarshaling of * security layer requests and responses to avoid propagation of namespace * declarations of legacy namespaces into marshaled results. *
* @see #jaxbContextLegacy */ protected static JAXBContext context; /** * The JAXBContext used for marshaling of of results in the legacy namespace. */ protected static JAXBContext legacyContext; // ------------------- initialization on demand idiom ------------------- // see http://en.wikipedia.org/wiki/Initialization_on_demand_holder_idiom // ---------------------------------------------------------------------- /** * Private constructor called by {@link SLMarshallerFactoryInstanceHolder}. */ private SLMarshallerFactory() { // context is initialized immediately while the legacy context is initialized only on demand try { String slPkg = at.buergerkarte.namespaces.securitylayer._1.ObjectFactory.class.getPackage().getName(); String xmldsigPkg = org.w3._2000._09.xmldsig_.ObjectFactory.class.getPackage().getName(); String cardChannelPkg = at.buergerkarte.namespaces.cardchannel.ObjectFactory.class.getPackage().getName(); context = JAXBContext.newInstance(slPkg + ":" + xmldsigPkg + ":" + cardChannelPkg); } catch (JAXBException e) { log.error("Failed to setup JAXBContext security layer request.", e); throw new SLRuntimeException(e); } } /** * The lazy instance holder for this SLMarshallerFactory. */ private static class SLMarshallerFactoryInstanceHolder { /** * The instance returned by {@link SLMarshallerFactory#getInstance()} */ private static final SLMarshallerFactory instance = new SLMarshallerFactory(); } /** * Get an instance of theSLMarshallerFactory
.
*/
public static SLMarshallerFactory getInstance() {
return SLMarshallerFactoryInstanceHolder.instance;
}
// ----------------------------------------------------------------------
/**
* Initialize the JAXBContext for the legacy namespace.
*/
private static synchronized void ensureLegacyContext() {
// legacy marshaller is initialized only on demand
if (legacyContext == null) {
try {
String slPkgLegacy1_0 = at.buergerkarte.namespaces.securitylayer._20020225_.ObjectFactory.class.getPackage().getName();
String slPkgLegacy1_1 = at.buergerkarte.namespaces.securitylayer._20020831_.ObjectFactory.class.getPackage().getName();
String xmldsigPkg = org.w3._2000._09.xmldsig_.ObjectFactory.class.getPackage().getName();
String cardChannelPkg = at.buergerkarte.namespaces.cardchannel.ObjectFactory.class.getPackage().getName();
legacyContext = JAXBContext.newInstance(slPkgLegacy1_0 + ":" + slPkgLegacy1_1 + ":" + xmldsigPkg + ":" + cardChannelPkg);
} catch (JAXBException e) {
log.error("Failed to setup JAXBContext security layer request.", e);
throw new SLRuntimeException(e);
}
}
}
/**
* Creates an SL marshaller.
*
* @param formattedOutput
* true
if the marshaller should produce formated
* output, false
otherwise
* @return an SL marshaller
*/
public Marshaller createMarshaller(boolean formattedOutput) {
return createMarshaller(formattedOutput, false);
}
/**
* Creates an SL marshaller.
*
* @param formattedOutput
* true
if the marshaller should produce formated
* output, false
otherwise
* @param fragment
* true
if the marshaller should produce a XML fragment
* (omit XML declaration), false
otherwise
* @return an SL marshaller
*/
public Marshaller createMarshaller(boolean formattedOutput, boolean fragment) {
try {
return MarshallerFactory.createMarshaller(context, formattedOutput, fragment);
} catch (JAXBException e) {
log.fatal("Failed to marshall error response.", e);
throw new SLRuntimeException("Failed to marshall error response.", e);
}
}
/**
* Creates a legacy SL marshaller.
*
* @param formattedOutput
* true
if the marshaller should produce formated
* output, false
otherwise
* @return a legacy SL marshaller
*/
public Marshaller createLegacyMarshaller(boolean formattedOutput) {
return createLegacyMarshaller(formattedOutput, false);
}
/**
* Creates a legacy SL marshaller.
*
* @param formattedOutput
* true
if the marshaller should produce formated
* output, false
otherwise
* @param fragment
* true
if the marshaller should produce a XML fragment
* (omit XML declaration), false
otherwise
* @return a legacy SL marshaller
*/
public Marshaller createLegacyMarshaller(boolean formattedOutput, boolean fragment) {
try {
ensureLegacyContext();
return MarshallerFactory.createMarshaller(legacyContext, formattedOutput, fragment);
} catch (JAXBException e) {
log.fatal("Failed to marshall error response.", e);
throw new SLRuntimeException("Failed to marshall error response.", e);
}
}
}