1 files changed, 172 insertions, 0 deletions
diff --git a/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/SLMarshallerFactory.java b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/SLMarshallerFactory.java
new file mode 100644
index 00000000..e0a375cf
--- /dev/null
+++ b/bkucommon/src/main/java/at/gv/egiz/bku/slcommands/SLMarshallerFactory.java
@@ -0,0 +1,172 @@
+/*
+* 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.
+   * <p>
+   * 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.
+   * </p>
+   * @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 the <code>SLMarshallerFactory</code>. 
+   */
+  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
+   *          <code>true</code> if the marshaller should produce formated
+   *          output, <code>false</code> otherwise
+   * @return an SL marshaller
+   */
+  public Marshaller createMarshaller(boolean formattedOutput) {
+    return createMarshaller(formattedOutput, false);
+  }
+
+  /**
+   * Creates an SL marshaller.
+   * 
+   * @param formattedOutput
+   *          <code>true</code> if the marshaller should produce formated
+   *          output, <code>false</code> otherwise
+   * @param fragment
+   *          <code>true</code> if the marshaller should produce a XML fragment
+   *          (omit XML declaration), <code>false</code> 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
+   *          <code>true</code> if the marshaller should produce formated
+   *          output, <code>false</code> otherwise
+   * @return a legacy SL marshaller
+   */
+  public Marshaller createLegacyMarshaller(boolean formattedOutput) {
+    return createLegacyMarshaller(formattedOutput, false);
+  }
+  
+  /**
+   * Creates a legacy SL marshaller.
+   * 
+   * @param formattedOutput
+   *          <code>true</code> if the marshaller should produce formated
+   *          output, <code>false</code> otherwise
+   * @param fragment
+   *          <code>true</code> if the marshaller should produce a XML fragment
+   *          (omit XML declaration), <code>false</code> 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);
+    }
+  }
+  
+}