org.openmrs.module.metadatasharing.web.view.JsonView.java Source code

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Here is the source code for org.openmrs.module.metadatasharing.web.view.JsonView.java

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/**
 * The contents of this file are subject to the OpenMRS Public License
 * Version 1.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://license.openmrs.org
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 *
 * Copyright (C) OpenMRS, LLC.  All Rights Reserved.
 */
package org.openmrs.module.metadatasharing.web.view;

import java.io.PrintWriter;
import java.util.Map;

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

import org.openmrs.module.metadatasharing.serializer.JSONSerializer;
import org.springframework.beans.factory.annotation.Autowired;

/**
 * It is responsible for setting appropriate header attributes (i.e. no caching) and serializing
 * response in the JSON format.
 */
public abstract class JsonView extends SerializeView {

    /**
     * The JSON serializer we will be using for writing output
     */
    @Autowired
    protected JSONSerializer serializer = null;

    /**
     * @see org.springframework.web.servlet.view.AbstractView#renderMergedOutputModel(java.util.Map,
     *      javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     */
    @Override
    protected void renderMergedOutputModel(@SuppressWarnings("rawtypes") Map model, HttpServletRequest request,
            HttpServletResponse response) throws Exception {
        response.setHeader("Pragma", "No-cache");
        response.setDateHeader("Expires", 0);
        response.setHeader("Cache-Control", "no-cache");
        response.setContentType("application/json");
        PrintWriter writer = response.getWriter();
        writer.write(serializer.serialize(getObjectToSerialize(model, request, response)));
    }
}