org.glassfish.jersey.gf.cdi.internal.InjecteeSkippingAnalyzer Maven / Gradle / Ivy

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package org.glassfish.jersey.gf.cdi.internal;

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.Map;
import java.util.Set;

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

import jersey.repackaged.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 = getMembersToSkip(type, methodsToSkip);
        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 = getMembersToSkip(type, fieldsToSkip);
        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());
    }

    private  Set getMembersToSkip(final Class type, final Map, Set> skippedMembers) {

        final Set directResult = skippedMembers.get(type);

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

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

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

        return compositeResult;
    }
}