Apache CXF example source code file (RestSourcePayloadProvider.java)

This example Apache CXF source code file (RestSourcePayloadProvider.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

annotation, document, dom, domsource, domsource, get, inputstream, io, messagecontext, parser, provider, provider, resource, restsourcepayloadprovider, restsourcepayloadprovider, servicemode, string, string, xml

The Apache CXF RestSourcePayloadProvider.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 demo.restful.server;

import java.io.InputStream;

import javax.annotation.Resource;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.ws.Provider;
import javax.xml.ws.Service;
import javax.xml.ws.ServiceMode;
import javax.xml.ws.WebServiceContext;
import javax.xml.ws.WebServiceProvider;
import javax.xml.ws.handler.MessageContext;

import org.w3c.dom.Document;

import org.apache.cxf.message.Message;

@WebServiceProvider()
@ServiceMode(value = Service.Mode.PAYLOAD)
public class RestSourcePayloadProvider implements Provider<DOMSource> {

    @Resource
    protected WebServiceContext wsContext;

    public RestSourcePayloadProvider() {
    }

    public DOMSource invoke(DOMSource request) {
        MessageContext mc = wsContext.getMessageContext();
        String path = (String)mc.get(Message.PATH_INFO);
        String query = (String)mc.get(Message.QUERY_STRING);
        String httpMethod = (String)mc.get(Message.HTTP_REQUEST_METHOD);

        System.out.println("--path--- " + path);
        System.out.println("--query--- " + query);
        System.out.println("--httpMethod--- " + httpMethod);

        if (httpMethod.equalsIgnoreCase("POST")) {
            // TBD: parse query info from DOMSource
            System.out.println("---Invoking updateCustomer---");
            return updateCustomer(request);
        } else if (httpMethod.equalsIgnoreCase("GET")) {
            if (path.equals("/customerservice/customer") && query == null) {
                System.out.println("---Invoking getAllCustomers---");
                return getAllCustomers();
            } else if (path.equals("/customerservice/customer") && query != null) {
                System.out.println("---Invoking getCustomer---");
                return getCustomer(query);
            }
        }

        return null;
    }

    private DOMSource getAllCustomers() {
        return createDOMSource("CustomerAllResp.xml");
    }

    private DOMSource getCustomer(String customerID) {
        return createDOMSource("CustomerJohnResp.xml");
    }

    private DOMSource updateCustomer(DOMSource request) {
        // TBD: returned update customer info
        return createDOMSource("CustomerJohnResp.xml");
    }

    private DOMSource createDOMSource(String fileName) {
        DocumentBuilderFactory factory;
        DocumentBuilder builder;
        Document document = null;
        DOMSource response = null;

        try {
            factory = DocumentBuilderFactory.newInstance();
            //factory.setValidating(true);
            builder = factory.newDocumentBuilder();
            InputStream greetMeResponse = getClass().getResourceAsStream(fileName);

            document = builder.parse(greetMeResponse);
            response = new DOMSource(document);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return response;
    }
}