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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
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 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
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 * and therefore, elected the GPL Version 2 license, then the option applies
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 */
package org.jvnet.hk2.internal;

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Set;

import javax.inject.Named;
import javax.inject.Singleton;

import org.glassfish.hk2.api.ClassAnalyzer;
import org.glassfish.hk2.api.MultiException;

/**
 * this is the default implementation of the ClassAnalyzer
 * 
 * @author jwells
 *
 */
@Singleton @Named(ClassAnalyzer.DEFAULT_IMPLEMENTATION_NAME)
public class DefaultClassAnalyzer implements ClassAnalyzer {
    private final ServiceLocatorImpl locator;
    
    /**
     * The DefaultClassAnalyzer is per ServiceLocatorImpl
     * 
     * @param locator The non-null locator associated with this analyzer
     */
    public DefaultClassAnalyzer(ServiceLocatorImpl locator) {
        this.locator = locator;
    }

    @SuppressWarnings("unchecked")
    @Override
    public  Constructor getConstructor(Class clazz)
            throws MultiException, NoSuchMethodException {
        Collector collector = new Collector();
        
        Constructor retVal = (Constructor)
                Utilities.findProducerConstructor(clazz, locator, collector);
        
        try {
            collector.throwIfErrors();
        }
        catch (MultiException me) {
            for (Throwable th : me.getErrors()) {
                if (th instanceof NoSuchMethodException) {
                    throw (NoSuchMethodException) th;
                }
            }
            
            throw me;
        }
        
        return retVal;
    }

    @Override
    public  Set getInitializerMethods(Class clazz)
            throws MultiException {
        Collector collector = new Collector();
        
        Set retVal = Utilities.findInitializerMethods(clazz, locator, collector);
        
        collector.throwIfErrors();
        
        return retVal;
    }

    @Override
    public  Set getFields(Class clazz) throws MultiException {
        Collector collector = new Collector();
        
        Set retVal = Utilities.findInitializerFields(clazz, locator, collector);
        
        collector.throwIfErrors();
        
        return retVal;
    }

    @Override
    public  Method getPostConstructMethod(Class clazz)
            throws MultiException {
        Collector collector = new Collector();
        
        Method retVal = Utilities.findPostConstruct(clazz, locator, collector);
        
        collector.throwIfErrors();
        
        return retVal;
    }

    @Override
    public  Method getPreDestroyMethod(Class clazz) throws MultiException {
        Collector collector = new Collector();
        
        Method retVal = Utilities.findPreDestroy(clazz, locator, collector);
        
        collector.throwIfErrors();
        
        return retVal;
    }

    
}