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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.jms;
import java.io.ByteArrayInputStream;
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.axiom.om.OMAbstractFactory;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMXMLParserWrapper;
import org.apache.axiom.om.impl.llom.factory.OMXMLBuilderFactory;
import org.apache.tuscany.core.databinding.impl.TransformationContextImpl;
import org.apache.tuscany.databinding.sdo.XMLDocument2XMLStreamReader;
import org.apache.tuscany.databinding.sdo.XMLStreamReader2XMLDocument;
import org.apache.tuscany.sdo.util.SDOUtil;
import org.apache.tuscany.spi.databinding.TransformationContext;
import org.apache.tuscany.spi.model.DataType;
import org.apache.tuscany.spi.wire.InvocationRuntimeException;
import commonj.sdo.DataObject;
import commonj.sdo.Property;
import commonj.sdo.Type;
import commonj.sdo.helper.DataFactory;
import commonj.sdo.helper.TypeHelper;
import commonj.sdo.helper.XMLDocument;
import commonj.sdo.helper.XMLHelper;
import commonj.sdo.helper.XSDHelper;
/**
* DataBinding for converting between AXIOM OMElement and Java Objects
*/
public class SDODataBinding {
private TypeHelper typeHelper;
private boolean isWrapped;
private QName elementName;
public SDODataBinding(TypeHelper typeHelper, boolean isWrapped, QName elementName) {
this.typeHelper = typeHelper;
this.isWrapped = isWrapped;
this.elementName = elementName;
}
public Object[] fromXML(String input) throws XMLStreamException, FactoryConfigurationError {
ByteArrayInputStream bIn = new ByteArrayInputStream(input.getBytes());
XMLStreamReader reader = XMLInputFactory.newInstance().createXMLStreamReader(bIn);
XMLStreamReader2XMLDocument transformer = new XMLStreamReader2XMLDocument();
TransformationContext context = new TransformationContextImpl();
DataType<QName> binding = new DataType<QName>(DataObject.class, null);
binding.setMetadata(TypeHelper.class.getName(), typeHelper);
context.setTargetDataType(binding);
XMLDocument document = transformer.transform(reader, context);
return toObjects(document, isWrapped);
}
public String toXML(Object[] os) {
XMLDocument document = toXMLDocument(typeHelper, os, elementName, isWrapped);
XMLDocument2XMLStreamReader transformer = new XMLDocument2XMLStreamReader();
XMLStreamReader reader = transformer.transform(document, null);
OMXMLParserWrapper builder = OMXMLBuilderFactory.createStAXOMBuilder(OMAbstractFactory.getOMFactory(), reader);
OMElement omElement = builder.getDocumentElement();
return omElement.toString();
}
/**
* Convert a typed DataObject to Java objects
*
* @param dataObject
* @param isWrapped
* @return the array of Objects from the DataObject
*/
public static Object[] toObjects(XMLDocument document, boolean isWrapped) {
DataObject dataObject = document.getRootObject();
if (isWrapped) {
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;
} else {
Object object = dataObject;
Type type = dataObject.getType();
if (type.isSequenced()) {
object = dataObject.getSequence().getValue(0);
}
return new Object[] { object };
}
}
/**
* Convert objects to typed DataObject
*
* @param typeNS
* @param typeName
* @param os
* @return the DataObject
*/
private static XMLDocument toXMLDocument(TypeHelper typeHelper, Object[] os, QName elementQName, boolean isWrapped) {
XSDHelper xsdHelper = SDOUtil.createXSDHelper(typeHelper);
Property property = xsdHelper.getGlobalProperty(elementQName.getNamespaceURI(), elementQName.getLocalPart(), true);
if (null == property) {
throw new InvocationRuntimeException("Type '" + elementQName.toString() + "' not found in registered SDO types.");
}
DataObject dataObject = null;
if (isWrapped) {
DataFactory dataFactory = SDOUtil.createDataFactory(typeHelper);
dataObject = dataFactory.create(property.getType());
List ips = dataObject.getInstanceProperties();
for (int i = 0; i < ips.size(); i++) {
dataObject.set(i, os[i]);
}
} else {
Object value = os[0];
Type type = property.getType();
if (!type.isDataType()) {
dataObject = (DataObject) value;
} else {
dataObject = SDOUtil.createDataTypeWrapper(type, value);
}
}
XMLHelper xmlHelper = SDOUtil.createXMLHelper(typeHelper);
return xmlHelper.createDocument(dataObject, elementQName.getNamespaceURI(), elementQName.getLocalPart());
}
}
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