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Spring MVC Integration for Handlebars.java

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/**
 * Copyright (c) 2012 Edgar Espina
 *
 * This file is part of Handlebars.java.
 *
 * 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.github.edgarespina.handlebars.springmvc;

import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.util.Assert;
import org.springframework.web.servlet.view.AbstractTemplateView;

import com.github.edgarespina.handlebars.Template;

/**
 * A handlebars view implementation.
 *
 * @author edgar.espina
 * @since 0.1.0
 */
public class HandlebarsView extends AbstractTemplateView {

  /**
   * The compiled template.
   */
  private Template template;

  /**
   * Merge model into the view. {@inheritDoc}
   */
  @Override
  protected void renderMergedTemplateModel(final Map model,
      final HttpServletRequest request, final HttpServletResponse response)
      throws Exception {
    template.apply(model, response.getWriter());
  }

  /**
   * Set the compiled template.
   *
   * @param template The compiled template. Required.
   */
  void setTemplate(final Template template) {
    Assert.notNull(template, "A handlebars template is required.");
    this.template = template;
  }
}