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Jersey CDI for GlassFish integration
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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
 * http://glassfish.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:
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package org.glassfish.jersey.gf.cdi;

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

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

import com.google.common.collect.Sets;

/**
 * Class analyzer that ignores given injection points.
 * Used for CDI integration, where we need to avoid HK2 replacing CDI injected entities.
 *
 * @author Jakub Podlesak (jakub.podlesak at oracle.com)
 */
public final class InjecteeSkippingAnalyzer implements ClassAnalyzer {

    private final ClassAnalyzer defaultAnalyzer;
    private final Map, Set> methodsToSkip;
    private final Map, Set> fieldsToSkip;

    public InjecteeSkippingAnalyzer(ClassAnalyzer defaultAnalyzer, Map, Set> methodsToSkip, Map, Set> fieldsToSkip) {
        this.defaultAnalyzer = defaultAnalyzer;
        this.methodsToSkip = methodsToSkip;
        this.fieldsToSkip = fieldsToSkip;
    }

    @Override
    public  Constructor getConstructor(Class type) throws MultiException, NoSuchMethodException {
        throw new IllegalStateException(LocalizationMessages.CDI_CLASS_ANALYZER_MISUSED());
    }

    @Override
    public  Set getInitializerMethods(Class type) throws MultiException {
        final Set originalMethods = defaultAnalyzer.getInitializerMethods(type);
        final Set skippedMethods = methodsToSkip.get(type);
        return skippedMethods == null ? originalMethods : Sets.difference(originalMethods, skippedMethods);
    }

    @Override
    public  Set getFields(Class type) throws MultiException {
        final Set originalFields = defaultAnalyzer.getFields(type);
        final Set skippedFields = fieldsToSkip.get(type);
        return skippedFields == null ? originalFields : Sets.difference(originalFields, skippedFields);
    }

    @Override
    public  Method getPostConstructMethod(Class type) throws MultiException {
        throw new IllegalStateException(LocalizationMessages.CDI_CLASS_ANALYZER_MISUSED());
    }

    @Override
    public  Method getPreDestroyMethod(Class type) throws MultiException {
        throw new IllegalStateException(LocalizationMessages.CDI_CLASS_ANALYZER_MISUSED());
    }
}