modules/databinding-jaxb-axiom/src/test/java/org/apache/tuscany/databinding/jaxb/axiom/JAXB2OMTestCase.java

/*
 * 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.databinding.jaxb.axiom;

import java.io.StringWriter;

import javax.xml.bind.JAXBElement;
import javax.xml.stream.XMLStreamReader;

import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.impl.builder.StAXOMBuilder;
import org.apache.tuscany.sca.core.DefaultExtensionPointRegistry;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.databinding.TransformationContext;
import org.apache.tuscany.sca.databinding.impl.TransformationContextImpl;
import org.apache.tuscany.sca.databinding.jaxb.JAXB2Node;
import org.apache.tuscany.sca.databinding.jaxb.JAXBContextHelper;
import org.apache.tuscany.sca.databinding.jaxb.axiom.JAXB2OMElement;
import org.apache.tuscany.sca.databinding.xml.Node2XMLStreamReader;
import org.apache.tuscany.sca.interfacedef.DataType;
import org.apache.tuscany.sca.interfacedef.impl.DataTypeImpl;
import org.apache.tuscany.sca.interfacedef.util.XMLType;
import org.junit.Test;
import org.w3c.dom.Node;

import com.example.ipo.jaxb.ObjectFactory;
import com.example.ipo.jaxb.PurchaseOrderType;
import com.example.ipo.jaxb.USAddress;
import com.example.ipo.jaxb.USState;

/**
 * @version $Rev$ $Date$
 */
public class JAXB2OMTestCase {
    @Test
    public void testTransformElement() throws Exception {
        JAXBElement<PurchaseOrderType> po = createPO();
        DataType<?> sourceDataType = new DataTypeImpl<XMLType>(PurchaseOrderType.class, XMLType.UNKNOWN);
        DataType<?> targetDataType = new DataTypeImpl<XMLType>(PurchaseOrderType.class, new XMLType(po.getName(), null));
        TransformationContext tContext = new TransformationContextImpl();
        tContext.setSourceDataType(sourceDataType);
        tContext.setTargetDataType(targetDataType);

        ExtensionPointRegistry registry = new DefaultExtensionPointRegistry();
        JAXBContextHelper contextHelper = JAXBContextHelper.getInstance(registry);
        // Force the JAXBContext to be cached
        contextHelper.createJAXBContext(tContext, true);

        long start = System.currentTimeMillis();
        JAXB2OMElement t1 = new JAXB2OMElement(registry);
        OMElement om = t1.transform(po, tContext);
        long duration1 = System.currentTimeMillis() - start;
        StringWriter sw = new StringWriter();
        // serializeAndConsume() will trigger the JAXBDataSource.serialize(Writer, OMOutputFormat)
        om.serializeAndConsume(sw);
        System.out.println(sw.toString());

        start = System.currentTimeMillis();
        Node node = new JAXB2Node(new DefaultExtensionPointRegistry()).transform(po, tContext);
        XMLStreamReader reader = new Node2XMLStreamReader().transform(node, null);
        om = new StAXOMBuilder(reader).getDocumentElement();
        sw = new StringWriter();
        om.serializeAndConsume(sw);
        long duration2 = System.currentTimeMillis() - start;
        System.out.println(sw.toString());
        System.out.println(duration1 + " vs. " + duration2);
    }

    @Test
    public void testTransformType() throws Exception {
        JAXBElement<PurchaseOrderType> po = createPO();
        DataType<?> sourceDataType = new DataTypeImpl<XMLType>(PurchaseOrderType.class, XMLType.UNKNOWN);
        DataType<?> targetDataType = new DataTypeImpl<XMLType>(PurchaseOrderType.class, new XMLType(po.getName(), null));
        TransformationContext tContext = new TransformationContextImpl();
        tContext.setSourceDataType(sourceDataType);
        tContext.setTargetDataType(targetDataType);
        OMElement om = new JAXB2OMElement(new DefaultExtensionPointRegistry()).transform(po.getValue(), tContext);
        StringWriter sw = new StringWriter();
        om.serializeAndConsume(sw);
        System.out.println(sw.toString());
    }

    private JAXBElement<PurchaseOrderType> createPO() {
        ObjectFactory factory = new ObjectFactory();
        PurchaseOrderType type = factory.createPurchaseOrderType();
        JAXBElement<PurchaseOrderType> po = factory.createPurchaseOrder(type);
        type.setItems(factory.createItems());
        type.setComment("123");
        USAddress address = factory.createUSAddress();
        address.setCity("San Jose");
        address.setStreet("ABC St.");
        address.setState(USState.CA);
        type.setShipTo(address);
        return po;
    }
}