com.moisespsena.vraptor.resourceexec.ResourceMethodExecution.java Source code

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Here is the source code for com.moisespsena.vraptor.resourceexec.ResourceMethodExecution.java

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/***
 * Copyright (c) 2011 Moises P. Sena - www.moisespsena.com
 * All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * 
 */
package com.moisespsena.vraptor.resourceexec;

import javax.servlet.http.HttpServletRequest;

import org.springframework.beans.factory.NoSuchBeanDefinitionException;

import br.com.caelum.vraptor.Validator;
import br.com.caelum.vraptor.core.MethodInfo;

import com.moisespsena.vraptor.advancedrequest.RequestMethodInfo;
import com.moisespsena.vraptor.advancedrequest.RequestMethodInfoStatic;
import com.moisespsena.vraptor.advancedrequest.RequestResult;
import com.moisespsena.vraptor.advancedrequest.RequestResultImpl;
import com.moisespsena.vraptor.advancedrequest.ResourceMethodResult;
import com.moisespsena.vraptor.advancedrequest.ResourceMethodResultImpl;
import com.moisespsena.vraptor.flashparameters.FlashMessages;
import com.moisespsena.vraptor.modularvalidator.CategorizedMessagesImpl;

/**
 * @author Moises P. Sena (http://moisespsena.com)
 * @since 1.0 21/09/2011
 */
public class ResourceMethodExecution {
    private final FlashMessages flashMessages;
    private final MethodInfo methodInfo;
    private RequestResult requestResult;
    private final ResourceExecResult resourceExecResult;
    private final HttpServletRequest servletRequest;
    private final UserResourceMethodStackExecution stackExecution;
    private final Validator validator;

    public ResourceMethodExecution(final HttpServletRequest servletRequest, final MethodInfo methodInfo,
            final Validator validator, final FlashMessages flashMessages,
            final ResourceExecResult resourceExecResult, final UserResourceMethodStackExecution stackExecution) {
        this.methodInfo = methodInfo;
        this.validator = validator;
        this.flashMessages = flashMessages;
        this.stackExecution = stackExecution;
        this.servletRequest = servletRequest;
        this.resourceExecResult = resourceExecResult;
    }

    public MethodInfo execute(final RequestMethodInfo requestMethodInfo) {
        RequestMethodInfoStatic.hydatesRequest(servletRequest, requestMethodInfo);
        ResourceMethodExecutionStatic.mark(servletRequest);
        // clear methodInfo result
        methodInfo.setResult(null);
        // informa que ResourceExec sera utilizado
        resourceExecResult.setUsing(true);

        try {
            stackExecution.execute();

            if (validator.hasErrors()) {
                requestResult = RequestResultImpl
                        .preConditionFailed(new CategorizedMessagesImpl(flashMessages.getMessages()));
            } else {
                resourceExecResult.dispatchPreResultGenerateListeners();

                final ResourceMethodResult resourceMethodResult = new ResourceMethodResultImpl(
                        methodInfo.getResult());
                requestResult = RequestResultImpl.result(resourceMethodResult,
                        new CategorizedMessagesImpl(flashMessages.getMessages()));
            }
        } catch (final NoSuchBeanDefinitionException e) {
            if (e.getBeanType().equals(requestMethodInfo.getResourceClass())) {
                requestResult = RequestResultImpl.notFound();
            } else {
                throw e;
            }
        } finally {
            ResourceMethodExecutionStatic.unmark(servletRequest);
            RequestMethodInfoStatic.dehydatesRequest(servletRequest);
            resourceExecResult.generated();
        }

        return methodInfo;
    }

    public RequestResult getRequestResult() {
        return requestResult;
    }
}