org.glassfish.jersey.gf.cdi.InjecteeSkippingAnalyzer.java Source code

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Here is the source code for org.glassfish.jersey.gf.cdi.InjecteeSkippingAnalyzer.java

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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:
 * 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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 * recipient has the option to distribute your version of this file under
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package org.glassfish.jersey.gf.cdi;

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Member;
import java.lang.reflect.Method;

import java.util.HashSet;
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<Class<?>, Set<Method>> methodsToSkip;
    private final Map<Class<?>, Set<Field>> fieldsToSkip;

    public InjecteeSkippingAnalyzer(ClassAnalyzer defaultAnalyzer, Map<Class<?>, Set<Method>> methodsToSkip,
            Map<Class<?>, Set<Field>> fieldsToSkip) {
        this.defaultAnalyzer = defaultAnalyzer;
        this.methodsToSkip = methodsToSkip;
        this.fieldsToSkip = fieldsToSkip;
    }

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

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

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

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

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

    private <M extends Member> Set<M> getMembersToSkip(final Class<?> type,
            final Map<Class<?>, Set<M>> skippedMembers) {

        final Set<M> directResult = skippedMembers.get(type);

        if (directResult != null) {
            return directResult;
        }

        // fallback for GLASSFISH-20255
        final Set<M> compositeResult = new HashSet<M>();
        for (Class<?> originalType : skippedMembers.keySet()) {

            if (originalType.isAssignableFrom(type)) {
                compositeResult.addAll(skippedMembers.get(originalType));
            }
        }

        return compositeResult;
    }
}