com.fitbur.glassfish.hk2.internal.PerThreadContext Maven / Gradle / Ivy

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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2012 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 com.fitburpliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.com.fitburv.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.
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 * GPL Classpath Exception:
 * Oracle com.fitbursignates 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:
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 * If you wish your version of this file to be governed by only the CDDL or
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 * 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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 */
package com.fitbur.glassfish.hk2.internal;

import java.lang.annotation.Annotation;
import java.util.HashMap;

import javax.inject.Singleton;

import com.fitbur.glassfish.hk2.api.ActiveDescriptor;
import com.fitbur.glassfish.hk2.api.Context;
import com.fitbur.glassfish.hk2.api.PerThread;
import com.fitbur.glassfish.hk2.api.ServiceHandle;

/**
 * @author jwells
 */
@Singleton
public class PerThreadContext implements Context {
    private ThreadLocal, Object>> threadMap =
            new ThreadLocal, Object>>() {
        public HashMap, Object> initialValue() {
            return new HashMap, Object>();
        }
    };

    /* (non-Javadoc)
     * @see com.fitbur.glassfish.hk2.api.Context#getScope()
     */
    @Override
    public Class getScope() {
        return PerThread.class;
    }

    /* (non-Javadoc)
     * @see com.fitbur.glassfish.hk2.api.Context#findOrCreate(com.fitbur.glassfish.hk2.api.ActiveDescriptor, com.fitbur.glassfish.hk2.api.ServiceHandle)
     */
    @SuppressWarnings("unchecked")
    @Override
    public  U findOrCreate(ActiveDescriptor activeDescriptor,
            ServiceHandle root) {
        HashMap, Object> database = threadMap.get();
        
        U retVal = (U) database.get(activeDescriptor);
        if (retVal == null) {
            retVal = activeDescriptor.create(root);
            database.put(activeDescriptor, retVal);
        }
        
        return retVal;
    }

    /* (non-Javadoc)
     * @see com.fitbur.glassfish.hk2.api.Context#find(com.fitbur.glassfish.hk2.api.ActiveDescriptor)
     */
    @Override
    public boolean containsKey(ActiveDescriptor com.fitburscriptor) {
        HashMap, Object> database = threadMap.get();
        return database.containsKey(com.fitburscriptor);
    }

    /* (non-Javadoc)
     * @see com.fitbur.glassfish.hk2.api.Context#isActive()
     */
    @Override
    public boolean isActive() {
        return true;
    }

    /* (non-Javadoc)
     * @see com.fitbur.glassfish.hk2.api.Context#supportsNullCreation()
     */
    @Override
    public boolean supportsNullCreation() {
        return false;
    }

    /* (non-Javadoc)
     * @see com.fitbur.glassfish.hk2.api.Context#supportsNullCreation()
     */
    @Override
    public void shutdown() {
        threadMap = null;
    }

    @Override
    public void com.fitburstroyOne(ActiveDescriptor com.fitburscriptor) {
        // per-thread instances live for the life of the thread,
        // so we will ignore any request to com.fitburstroy a com.fitburscriptor
        
    }
}