Apache CXF example source code file (HelloImplWithWrapppedContinuation.java)

This example Apache CXF source code file (HelloImplWithWrapppedContinuation.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, continuation, continuation, failed, hashmap, hellocontinuation, hellocontinuation, helloimplwithwrapppedcontinuation, interruptedexception, map, runtimeexception, string, string, stringbuilder, stringbuilder, util, xml

The Apache CXF HelloImplWithWrapppedContinuation.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.http_jetty.continuations;
import java.util.HashMap;
import java.util.Map;

import javax.annotation.Resource;
import javax.jws.WebService;
import javax.xml.ws.WebServiceContext;

import org.apache.cxf.continuations.Continuation;
import org.apache.cxf.continuations.ContinuationProvider;


@WebService(name = "HelloContinuation", 
            serviceName = "HelloContinuationService", 
            portName = "HelloContinuationPort", 
            targetNamespace = "http://cxf.apache.org/systest/jaxws",
            endpointInterface = "org.apache.cxf.systest.http_jetty.continuations.HelloContinuation")
public class HelloImplWithWrapppedContinuation implements HelloContinuation {
    
    
    private Map<String, Continuation> suspended = 
        new HashMap<String, Continuation>();
    
    
    @Resource
    private WebServiceContext context;
    
    public String sayHi(String firstName, String secondName) {
        
        Continuation continuation = getContinuation(firstName);
        if (continuation == null) {
            throw new RuntimeException("Failed to get continuation");
        }
        synchronized (continuation) {
            if (continuation.isNew()) {
                Object userObject = secondName != null && secondName.length() > 0 
                                    ? secondName : null;
                continuation.setObject(userObject);
                long timeout = 20000;
                if (secondName.startsWith("to:")) {
                    timeout = Long.parseLong(secondName.substring(3));
                }
                suspendInvocation(firstName, continuation, timeout);
            } else {
                StringBuilder sb = new StringBuilder();
                sb.append(firstName);
                
                // if the actual parameter is not null 
                if (secondName != null && secondName.length() > 0) {
                    String surname = continuation.getObject().toString();
                    sb.append(' ').append(surname);
                }
                System.out.println("Saying hi to " + sb.toString());
                return "Hi " + sb.toString();
            }
        }
        // unreachable
        return null;
    }

    public boolean isRequestSuspended(String name) {
        synchronized (suspended) {
            while (!suspended.containsKey(name)) {
                try {
                    suspended.wait(10000);
                } catch (InterruptedException ex) {
                    return false;
                }
            }
        }
        return true;
    }

    public void resumeRequest(final String name) {
        
        Continuation suspendedCont = null;
        synchronized (suspended) {
            suspendedCont = suspended.get(name);
        }
        
        if (suspendedCont != null) {
            synchronized (suspendedCont) {
                suspendedCont.resume();
            }
        }
    }
    
    private void suspendInvocation(String name, Continuation cont, long timeout) {
        try {
            cont.suspend(timeout);    
        } finally {
            synchronized (suspended) {
                suspended.put(name, cont);
                suspended.notifyAll();
            }
        }
    }
    
    private Continuation getContinuation(String name) {
        synchronized (suspended) {
            Continuation suspendedCont = suspended.remove(name);
            if (suspendedCont != null) {
                return suspendedCont;
            }
        }
        
        ContinuationProvider provider = 
            (ContinuationProvider)context.getMessageContext().get(ContinuationProvider.class.getName());
        return provider.getContinuation();
    }
}