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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.axis2.util;
import java.io.IOException;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import java.util.List;
import javax.xml.namespace.QName;
import javax.xml.stream.FactoryConfigurationError;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import org.apache.axis2.om.OMAbstractFactory;
import org.apache.axis2.om.OMElement;
import org.apache.axis2.om.OMXMLParserWrapper;
import org.apache.axis2.om.impl.llom.factory.OMXMLBuilderFactory;
import org.apache.tuscany.sdo.helper.DataFactoryImpl;
import org.apache.tuscany.sdo.helper.XMLHelperImpl;
import org.apache.tuscany.sdo.helper.XSDHelperImpl;
import org.osoa.sca.ServiceRuntimeException;
import commonj.sdo.DataObject;
import commonj.sdo.Property;
import commonj.sdo.helper.TypeHelper;
import commonj.sdo.helper.XMLDocument;
import commonj.sdo.helper.XSDHelper;
/**
* Utility methods to convert between Axis2 AXIOM, SDO DataObjects and Java objects.
*
* Most of these methods rely on the schemas having been registered with XSDHelper.define
*/
public class AxiomHelper {
/**
* Deserialize an OMElement into Java Objects
*
* @param om
* the OMElement
* @return the array of deserialized Java objects
*/
public static Object[] toObjects(TypeHelper typeHelper, OMElement om) {
DataObject dataObject = toDataObject(typeHelper, om);
Object[] os = toObjects(dataObject);
return os;
}
/**
* Convert a typed DataObject to Java objects
*
* @param dataObject
* @return the array of Objects from the DataObject
*/
public static Object[] toObjects(DataObject dataObject) {
List ips = dataObject.getInstanceProperties();
Object[] os = new Object[ips.size()];
for (int i = 0; i < ips.size(); i++) {
os[i] = dataObject.get((Property) ips.get(i));
}
return os;
}
/**
* Convert objects to an AXIOM OMElement
*
* @param os
* @param typeNS
* @param typeName
* @return an AXIOM OMElement
*/
public static OMElement toOMElement(TypeHelper typeHelper, Object[] os, QName typeQN) {
DataObject dataObject = toDataObject(typeHelper, os, typeQN);
OMElement omElement = toOMElement(typeHelper, dataObject, typeQN);
return omElement;
}
/**
* Convert a DataObject to AXIOM OMElement
*
* @param dataObject
* @param typeNS
* @param typeName
* @return
* @throws XMLStreamException
* @throws IOException
*/
public static OMElement toOMElement(TypeHelper typeHelper, DataObject dataObject, QName typeQN) {
try {
PipedOutputStream pos = new PipedOutputStream();
PipedInputStream pis = new PipedInputStream(pos);
new XMLHelperImpl(typeHelper).save(dataObject, typeQN.getNamespaceURI(), typeQN.getLocalPart(), pos);
pos.close();
XMLStreamReader parser;
ClassLoader ccl=Thread.currentThread().getContextClassLoader();
try {
Thread.currentThread().setContextClassLoader(AxiomHelper.class.getClassLoader());
parser = XMLInputFactory.newInstance().createXMLStreamReader(pis);
} finally {
Thread.currentThread().setContextClassLoader(ccl);
}
OMXMLParserWrapper builder = OMXMLBuilderFactory.createStAXOMBuilder(OMAbstractFactory.getOMFactory(), parser);
OMElement root = builder.getDocumentElement();
return root;
} catch (IOException e) {
throw new ServiceRuntimeException(e);
} catch (XMLStreamException e) {
throw new ServiceRuntimeException(e);
} catch (FactoryConfigurationError e) {
throw new ServiceRuntimeException(e);
}
}
/**
* Deserialize an AXIOM OMElement into a DataObject
*
* @param omElement
* @return
*/
public static DataObject toDataObject(TypeHelper typeHelper, OMElement omElement) {
try {
PipedOutputStream pos = new PipedOutputStream();
PipedInputStream pis = new PipedInputStream(pos);
ClassLoader ccl=Thread.currentThread().getContextClassLoader();
try {
Thread.currentThread().setContextClassLoader(AxiomHelper.class.getClassLoader());
omElement.serialize(pos);
} finally {
Thread.currentThread().setContextClassLoader(ccl);
}
pos.flush();
pos.close();
XMLDocument document = new XMLHelperImpl(typeHelper).load(pis);
return document.getRootObject();
} catch (IOException e) {
throw new ServiceRuntimeException(e);
} catch (XMLStreamException e) {
throw new ServiceRuntimeException(e);
}
}
/**
* Convert objects to typed DataObject
*
* @param typeNS
* @param typeName
* @param os
* @return the DataObject
*/
public static DataObject toDataObject(TypeHelper typeHelper, Object[] os, QName typeQN) {
XSDHelper xsdHelper=new XSDHelperImpl(typeHelper);
Property property=xsdHelper.getGlobalProperty(typeQN.getNamespaceURI(), typeQN.getLocalPart(), true);
DataObject dataObject = new DataFactoryImpl(typeHelper).create(property.getType());
List ips = dataObject.getInstanceProperties();
for (int i = 0; i < ips.size(); i++) {
Property p = (Property) ips.get(i);
dataObject.set(i, os[i]);
}
return dataObject;
}
}
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