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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.geronimo.cxf.builder;

import java.io.IOException;
import java.io.StringWriter;
import java.net.URI;
import java.util.Map;

import javax.xml.namespace.QName;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.geronimo.common.DeploymentException;
import org.apache.geronimo.cxf.client.CXFServiceReference;
import org.apache.geronimo.gbean.GBeanInfo;
import org.apache.geronimo.gbean.GBeanInfoBuilder;
import org.apache.geronimo.j2ee.deployment.Module;
import org.apache.geronimo.j2ee.j2eeobjectnames.NameFactory;
import org.apache.geronimo.jaxws.builder.EndpointInfoBuilder;
import org.apache.geronimo.jaxws.builder.JAXWSServiceRefBuilder;
import org.apache.geronimo.jaxws.client.EndpointInfo;
import org.apache.geronimo.kernel.repository.Environment;
import org.apache.geronimo.naming.deployment.ServiceRefBuilder;
import org.apache.geronimo.xbeans.geronimo.naming.GerServiceRefType;
import org.apache.geronimo.xbeans.javaee.PortComponentRefType;
import org.apache.geronimo.xbeans.javaee.ServiceRefHandlerChainsType;
import org.apache.geronimo.xbeans.javaee.ServiceRefType;
import org.apache.xmlbeans.XmlOptions;

public class CXFServiceRefBuilder extends JAXWSServiceRefBuilder {

    private static final Log LOG = LogFactory.getLog(CXFServiceRefBuilder.class);
        
    public CXFServiceRefBuilder(Environment defaultEnvironment,
                                String[] eeNamespaces) {
        super(defaultEnvironment, eeNamespaces);
    }
       
    public Object createService(ServiceRefType serviceRef, GerServiceRefType gerServiceRef, 
                                Module module, ClassLoader cl, Class serviceInterface, 
                                QName serviceQName, URI wsdlURI, Class serviceReference, 
                                Map portComponentRefMap) throws DeploymentException {
        EndpointInfoBuilder builder = new EndpointInfoBuilder(serviceInterface,
                gerServiceRef, portComponentRefMap, module.getModuleFile(),
                wsdlURI, serviceQName);
        builder.build();

        wsdlURI = builder.getWsdlURI();
        serviceQName = builder.getServiceQName();
        Map seiInfoMap = builder.getEndpointInfo();

        String handlerChainsXML = null;
        try {
            handlerChainsXML = getHandlerChainAsString(serviceRef.getHandlerChains());
        } catch (IOException e) {
            // this should not happen
            LOG.warn("Failed to serialize handler chains", e);
        }

        String serviceReferenceName = (serviceReference == null) ? null : serviceReference.getName();
        
        return new CXFServiceReference(serviceInterface.getName(), serviceReferenceName,  wsdlURI,
                serviceQName, module.getModuleName(), handlerChainsXML, seiInfoMap);
    }
    
    private static String getHandlerChainAsString(ServiceRefHandlerChainsType handlerChains)
            throws IOException {
        String xml = null;
        if (handlerChains != null) {
            StringWriter w = new StringWriter();
            XmlOptions options = new XmlOptions();
            options.setSaveSyntheticDocumentElement(new QName("http://java.sun.com/xml/ns/javaee",
                                                              "handler-chains"));
            handlerChains.save(w, options);
            xml = w.toString();
        }
        return xml;
    }
    
    public static final GBeanInfo GBEAN_INFO;

    static {
        GBeanInfoBuilder infoBuilder = GBeanInfoBuilder.createStatic(
                CXFServiceRefBuilder.class, NameFactory.MODULE_BUILDER);
        infoBuilder.addInterface(ServiceRefBuilder.class);
        infoBuilder.addAttribute("defaultEnvironment", Environment.class, true,
                true);
        infoBuilder.addAttribute("eeNamespaces", String[].class, true, true);

        infoBuilder.setConstructor(new String[] { "defaultEnvironment",
                                                  "eeNamespaces"});

        GBEAN_INFO = infoBuilder.getBeanInfo();
    }

    public static GBeanInfo getGBeanInfo() {
        return GBEAN_INFO;
    }
}