ResourceMethodDescriptorImpl.java

/*******************************************************************************
 * Copyright (c) 2012-2016 Codenvy, S.A.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.everrest.core.impl.resource;

import com.google.common.base.MoreObjects;

import org.everrest.core.Parameter;
import org.everrest.core.resource.ResourceDescriptor;
import org.everrest.core.resource.ResourceMethodDescriptor;

import javax.ws.rs.core.MediaType;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.List;

public class ResourceMethodDescriptorImpl implements ResourceMethodDescriptor {
    /** This method will be invoked. */
    private final Method method;

    /** HTTP request method designator. */
    private final String httpMethod;

    /** List of method's parameters. See {@link Parameter} . */
    private final List<Parameter> parameters;

    /**
     * Parent resource for this method resource, in other words class which contains this method.
     */
    private final ResourceDescriptor parentResource;

    /**
     * List of media types which this method can consume. See {@link javax.ws.rs.Consumes} .
     */
    private final List<MediaType> consumes;

    /**
     * List of media types which this method can produce. See {@link javax.ws.rs.Produces} .
     */
    private final List<MediaType> produces;

    private final Annotation[] additional;

    /**
     * Constructs new instance of {@link ResourceMethodDescriptor}.
     *
     * @param method
     *         See {@link Method}
     * @param httpMethod
     *         HTTP request method designator
     * @param parameters
     *         list of method parameters. See {@link Parameter}
     * @param parentResource
     *         parent resource for this method
     * @param consumes
     *         list of media types which this method can consume
     * @param produces
     *         list of media types which this method can produce
     * @param additional
     *         set of additional (not JAX-RS annotations)
     */
    ResourceMethodDescriptorImpl(Method method,
                                 String httpMethod,
                                 List<Parameter> parameters,
                                 ResourceDescriptor parentResource,
                                 List<MediaType> consumes,
                                 List<MediaType> produces,
                                 Annotation[] additional) {
        this.method = method;
        this.httpMethod = httpMethod;
        this.parameters = parameters;
        this.parentResource = parentResource;
        this.consumes = consumes;
        this.produces = produces;
        this.additional = additional;
    }


    @Override
    public Method getMethod() {
        return method;
    }


    @Override
    public List<Parameter> getMethodParameters() {
        return parameters;
    }


    @Override
    public ResourceDescriptor getParentResource() {
        return parentResource;
    }


    @Override
    public List<MediaType> consumes() {
        return consumes;
    }


    @Override
    public String getHttpMethod() {
        return httpMethod;
    }


    @Override
    public List<MediaType> produces() {
        return produces;
    }


    @Override
    public Class<?> getResponseType() {
        return getMethod().getReturnType();
    }


    @Override
    public Annotation[] getAnnotations() {
        return additional;
    }


    @Override
    public String toString() {
        return MoreObjects.toStringHelper(this)
                          .add("resource", parentResource.getObjectClass())
                          .add("HTTP method", httpMethod)
                          .add("produced media types", produces)
                          .add("consumed media types", consumes)
                          .add("returned type", getResponseType())
                          .toString();
    }
}