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Apache CXF example source code file (AbstractSourcePayloadProvider.java)

This example Apache CXF source code file (AbstractSourcePayloadProvider.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Apache CXF tags/keywords

abstractsourcepayloadprovider, annotation, exception, exception, io, runtimeexception, sax, serverlogicalhandler, source, source, streamresult, streamsource, string, string, transformerexception, xml, xmlstreamreader, xmlstreamreader

The Apache CXF AbstractSourcePayloadProvider.java source code

/**
 * 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.cxf.systest.provider;
import java.io.InputStream;
import java.io.StringWriter;
import java.io.Writer;

import javax.annotation.Resource;
import javax.jws.HandlerChain;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamReader;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.sax.SAXSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import javax.xml.ws.ServiceMode;
import javax.xml.ws.WebServiceContext;
import javax.xml.ws.WebServiceProvider;
import javax.xml.ws.handler.MessageContext;

import org.xml.sax.InputSource;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.XMLReaderFactory;

import org.apache.cxf.helpers.XMLUtils;
import org.apache.cxf.staxutils.StaxSource;
import org.apache.cxf.staxutils.StaxUtils;

//The following wsdl file is used.
//wsdlLocation = "/trunk/testutils/src/main/resources/wsdl/hello_world_rpc_lit.wsdl"
@WebServiceProvider(portName = "SoapPortProviderRPCLit3", serviceName = "SOAPServiceProviderRPCLit",
                      targetNamespace = "http://apache.org/hello_world_rpclit",
 wsdlLocation = "/wsdl/hello_world_rpc_lit.wsdl")
@ServiceMode (value = javax.xml.ws.Service.Mode.PAYLOAD)
@HandlerChain(file = "./handlers_invocation.xml", name = "TestHandlerChain")
public abstract class AbstractSourcePayloadProvider implements SourceProvider {
    boolean doneStax;
    @Resource 
    WebServiceContext ctx;
    
    public AbstractSourcePayloadProvider() {
    }
    
   
    public Source invoke(Source request) {   
        QName qn = (QName)ctx.getMessageContext().get(MessageContext.WSDL_OPERATION);
        if (qn == null) {
            throw new RuntimeException("No Operation Name");
        }
        
        try {
            System.out.println(request.getClass().getName());
            String input = getSourceAsString(request);
            System.out.println(input);  
            
            if (input.indexOf("ServerLogicalHandler") >= 0) {
                return map(request.getClass());
            }

        } catch (Exception e) {
            System.out.println("Received an exception while parsing the source");
            e.printStackTrace();
        }
        return null;
    }
    
    private Source map(Class<? extends Source> class1) 
        throws Exception {
        
        InputStream greetMeInputStream = getClass()
            .getResourceAsStream("resources/GreetMeRpcLiteralRespBody.xml");
        if (DOMSource.class.equals(class1)) {
            return new DOMSource(XMLUtils.parse(greetMeInputStream));
        } else if (StaxSource.class.equals(class1)) {
            if (doneStax) {
                XMLReader reader = XMLReaderFactory.createXMLReader();
                return new SAXSource(reader, new InputSource(greetMeInputStream));
            } else {
                doneStax = true;
                return new StaxSource(StaxUtils.createXMLStreamReader(greetMeInputStream));
            }
        } else if (StreamSource.class.equals(class1)) {
            StreamSource source = new StreamSource();
            source.setInputStream(greetMeInputStream);
            return source;
        }
        //java 6 javax.xml.transform.stax.StAXSource
        XMLStreamReader reader = StaxUtils.createXMLStreamReader(greetMeInputStream);
        return class1.getConstructor(XMLStreamReader.class).newInstance(reader);
    }

    public static String getSourceAsString(Source s) throws Exception {
        try {
            Transformer transformer = TransformerFactory.newInstance().newTransformer();
            transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
            transformer.setOutputProperty(OutputKeys.METHOD, "xml");
            Writer out = new StringWriter();
            StreamResult streamResult = new StreamResult();
            streamResult.setWriter(out);
            transformer.transform(s, streamResult);
            return streamResult.getWriter().toString();
            
        } catch (TransformerException te) {
            if ("javax.xml.transform.stax.StAXSource".equals(s.getClass().getName())) {
                //on java6, we will get this class if "stax" is configured
                //for the preferred type. However, older xalans don't know about it
                //we'll manually do it
                XMLStreamReader r = (XMLStreamReader)s.getClass().getMethod("getXMLStreamReader").invoke(s);
                return XMLUtils.toString(StaxUtils.read(r).getDocumentElement());
            }
            throw te;
        }
    }
}

Other Apache CXF examples (source code examples)

Here is a short list of links related to this Apache CXF AbstractSourcePayloadProvider.java source code file:

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