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/**
*
* Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
*
* 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.tuscany.binding.celtix.handler.io;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import javax.xml.namespace.QName;
import javax.xml.ws.WebServiceException;
import org.w3c.dom.Node;
import org.w3c.dom.bootstrap.DOMImplementationRegistry;
import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.LSOutput;
import org.w3c.dom.ls.LSSerializer;
import commonj.sdo.DataObject;
import commonj.sdo.Property;
import commonj.sdo.helper.XMLDocument;
import org.apache.tuscany.databinding.sdo.SDOXMLHelper;
import org.apache.tuscany.sdo.helper.XMLHelperImpl;
import org.objectweb.celtix.bindings.DataReader;
import org.objectweb.celtix.context.ObjectMessageContext;
public class NodeDataReader implements DataReader<Node> {
SCADataBindingCallback callback;
public NodeDataReader(SCADataBindingCallback cb) {
callback = cb;
}
public Object read(int idx, Node input) {
return read(null, idx, input);
}
public Object read(QName name, int idx, Node input) {
try {
byte bytes[] = getNodeBytes(input);
Object os[] = SDOXMLHelper.toObjects(callback.getResourceClassLoader(),
callback.getTypeHelper(), bytes, false);
return os[0];
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new WebServiceException(e);
}
}
public void readWrapper(ObjectMessageContext objCtx, boolean isOutBound, Node input) {
try {
QName wrapperName;
if (isOutBound) {
wrapperName = callback.getOperationInfo().getResponseWrapperQName();
} else {
wrapperName = callback.getOperationInfo().getRequestWrapperQName();
}
Node nd = input.getFirstChild();
while (nd != null
&& !wrapperName.getNamespaceURI().equals(nd.getNamespaceURI())
&& !wrapperName.getLocalPart().equals(nd.getLocalName())) {
nd = nd.getNextSibling();
}
//REVISIT - This is SUCH a HACK. This needs to be done with StAX or something
//a bit better than streaming and reparsing
InputStream in = getNodeStream(nd);
XMLDocument document = new XMLHelperImpl(callback.getTypeHelper()).load(in);
DataObject object = document.getRootObject();
List ips = object.getInstanceProperties();
Object[] os = new Object[object.getInstanceProperties().size()];
for (int i = 0; i < os.length; i++) {
os[i] = object.get((Property)ips.get(i));
}
if (callback.hasInOut()) {
//REVISIT - inOuts
} else {
if (isOutBound) {
objCtx.setReturn(os[0]);
} else {
objCtx.setMessageObjects(os);
}
}
} catch (IOException e) {
throw new WebServiceException(e);
} catch (ClassCastException e) {
throw new WebServiceException(e);
} catch (ClassNotFoundException e) {
throw new WebServiceException(e);
} catch (InstantiationException e) {
throw new WebServiceException(e);
} catch (IllegalAccessException e) {
throw new WebServiceException(e);
}
}
private byte[] getNodeBytes(Node node)
throws ClassCastException, ClassNotFoundException,
InstantiationException, IllegalAccessException {
//This is also a hack, the JDK should already have this set, but it doesn't
DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
if (registry == null) {
System.setProperty(DOMImplementationRegistry.PROPERTY,
"com.sun.org.apache.xerces.internal.dom.DOMImplementationSourceImpl");
registry = DOMImplementationRegistry.newInstance();
}
DOMImplementationLS impl = (DOMImplementationLS)registry.getDOMImplementation("LS");
if (impl == null) {
System.setProperty(DOMImplementationRegistry.PROPERTY,
"com.sun.org.apache.xerces.internal.dom.DOMImplementationSourceImpl");
registry = DOMImplementationRegistry.newInstance();
impl = (DOMImplementationLS)registry.getDOMImplementation("LS");
}
LSOutput output = impl.createLSOutput();
ByteArrayOutputStream bout = new ByteArrayOutputStream();
output.setByteStream(bout);
LSSerializer writer = impl.createLSSerializer();
writer.write(node, output);
return bout.toByteArray();
}
private InputStream getNodeStream(Node node)
throws ClassCastException, ClassNotFoundException,
InstantiationException, IllegalAccessException {
DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
if (registry == null) {
//This is also a hack, the JDK should already have this set, but it doesn't
System.setProperty(DOMImplementationRegistry.PROPERTY,
"com.sun.org.apache.xerces.internal.dom.DOMImplementationSourceImpl");
registry = DOMImplementationRegistry.newInstance();
}
DOMImplementationLS impl = (DOMImplementationLS)registry.getDOMImplementation("LS");
if (impl == null) {
System.setProperty(DOMImplementationRegistry.PROPERTY,
"com.sun.org.apache.xerces.internal.dom.DOMImplementationSourceImpl");
registry = DOMImplementationRegistry.newInstance();
impl = (DOMImplementationLS)registry.getDOMImplementation("LS");
}
LSOutput output = impl.createLSOutput();
RawByteArrayOutputStream bout = new RawByteArrayOutputStream();
output.setByteStream(bout);
LSSerializer writer = impl.createLSSerializer();
writer.write(node, output);
return new ByteArrayInputStream(bout.getBytes(), 0, bout.size());
}
}
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