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JSR-181 and JSR-224 Annotations Processing
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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.axis2.jaxws.feature;

import org.apache.axis2.jaxws.ExceptionFactory;
import org.apache.axis2.jaxws.description.EndpointDescription;
import org.apache.axis2.jaxws.i18n.Messages;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import javax.xml.ws.spi.WebServiceFeatureAnnotation;
import java.lang.annotation.Annotation;
import java.util.HashMap;
import java.util.Map;

public class ServerFramework {
    private static final Log log = LogFactory.getLog(ServerFramework.class);
    
    private static final Annotation[] ZERO_LENGTH_ARRAY = new Annotation[0];

    private Map configuratorMap;
    private Map annotationMap;
    
    public ServerFramework() {
    	super();
        configuratorMap = new HashMap();
        annotationMap = new HashMap();
    }
    
    public void addConfigurator(String id, ServerConfigurator configurator) {
        configuratorMap.put(id, configurator);
    }
    
    public boolean isValid(Annotation annotation) {
        if (annotation == null)
            return false;
        
        WebServiceFeatureAnnotation wsfAnnotation = getWebServiceFeatureAnnotation(annotation);
        
        String id = null;
        if (wsfAnnotation != null)
        	id = wsfAnnotation.id();
        
        return configuratorMap.containsKey(id);
    }
    
    public void addAnnotation(Annotation annotation) {
        if (!isValid(annotation)) {
            throw ExceptionFactory.
                makeWebServiceException(Messages.getMessage("invalidWSAnnotation", 
                                                            annotation.toString()));
        }
        WebServiceFeatureAnnotation wsfAnnotation = getWebServiceFeatureAnnotation(annotation);

        annotationMap.put(wsfAnnotation.id(), annotation);
    }
    
    public Annotation getAnnotation(String id) {
        return annotationMap.get(id);
    }
    
    public Annotation[] getAllAnnotations() {
        return annotationMap.values().toArray(ZERO_LENGTH_ARRAY);
    }
    
    public void configure(EndpointDescription endpointDescription) {
        if(log.isDebugEnabled()){
            log.debug("Start ServerFramework.conigure(EndpointDescription)");
        }
        for (Annotation annotation : getAllAnnotations()) {
            WebServiceFeatureAnnotation wsfAnnotation = getWebServiceFeatureAnnotation(annotation);
            ServerConfigurator configurator = configuratorMap.get(wsfAnnotation.id());
            if (log.isDebugEnabled()) {
                log.debug("Found ServerConfigurator: " + configurator.getClass().getName());
            }
            
            if (log.isDebugEnabled()) {
                log.debug("Starting " + configurator.getClass().getName() + ".configure()");
            }
            configurator.configure(endpointDescription);
            if (log.isDebugEnabled()) {
                log.debug("Completed " + configurator.getClass().getName() + ".configure()");
            }
        }
        if(log.isDebugEnabled()){
            log.debug("Exit ServerFramework.conigure(EndpointDescription)");
        }
    }
    
    private WebServiceFeatureAnnotation getWebServiceFeatureAnnotation(Annotation annotation) {
        if (log.isDebugEnabled()) {
            log.debug("Looking up WebServiceFeature annotation for " + annotation.annotationType());
        }
        return annotation.annotationType().getAnnotation(WebServiceFeatureAnnotation.class);
    }
}