org.glassfish.jersey.server.internal.inject.ParamInjectionResolver Maven / Gradle / Ivy

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2012-2017 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://oss.oracle.com/licenses/CDDL+GPL-1.1
 * or 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 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]"
 *
 * Contributor(s):
 * 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
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package org.glassfish.jersey.server.internal.inject;

import java.lang.annotation.Annotation;
import java.lang.reflect.AnnotatedElement;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
import java.util.function.Function;
import java.util.function.Supplier;

import javax.ws.rs.Encoded;

import javax.inject.Provider;

import org.glassfish.jersey.internal.inject.Injectee;
import org.glassfish.jersey.internal.inject.InjectionResolver;
import org.glassfish.jersey.internal.util.ReflectionHelper;
import org.glassfish.jersey.server.ContainerRequest;
import org.glassfish.jersey.server.model.Parameter;
import org.glassfish.jersey.server.spi.internal.ValueParamProvider;

/**
 * Abstract base class for resolving JAX-RS {@code @XxxParam} injection.
 *
 * @param  supported parameter injection annotation.
 * @author Marek Potociar (marek.potociar at oracle.com)
 */
public class ParamInjectionResolver implements InjectionResolver {

    private final ValueParamProvider valueParamProvider;
    private final Class annotation;
    private final Provider request;

    /**
     * Initialize the base parameter injection resolver.
     *
     * @param valueParamProvider parameter value supplier provider.
     */
    public ParamInjectionResolver(ValueParamProvider valueParamProvider, Class annotation,
            Provider request) {
        this.valueParamProvider = valueParamProvider;
        this.annotation = annotation;
        this.request = request;
    }

    @Override
    @SuppressWarnings("unchecked")
    public Object resolve(Injectee injectee) {
        AnnotatedElement annotated = injectee.getParent();
        Annotation[] annotations;
        if (annotated.getClass().equals(Constructor.class)) {
            annotations = ((Constructor) annotated).getParameterAnnotations()[injectee.getPosition()];
        } else {
            annotations = annotated.getDeclaredAnnotations();
        }

        Class componentClass = injectee.getInjecteeClass();
        Type genericType = injectee.getRequiredType();

        final Type targetGenericType;
        if (injectee.isFactory()) {
            targetGenericType = ReflectionHelper.getTypeArgument(genericType, 0);
        } else {
            targetGenericType = genericType;
        }
        final Class targetType = ReflectionHelper.erasure(targetGenericType);

        final Parameter parameter = Parameter.create(
                componentClass,
                componentClass,
                hasEncodedAnnotation(injectee),
                targetType,
                targetGenericType,
                annotations);

        final Function valueProvider = valueParamProvider.getValueProvider(parameter);
        if (valueProvider != null) {
            if (injectee.isFactory()) {
                return (Supplier