com.linuxbox.enkive.web.AbstractJsonServlet.java Source code

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Here is the source code for com.linuxbox.enkive.web.AbstractJsonServlet.java

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/*******************************************************************************
 * Copyright 2013 The Linux Box Corporation.
 *
 * This file is part of Enkive CE (Community Edition).
 *
 * Enkive CE is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version.
 *
 * Enkive CE is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public
 * License along with Enkive CE. If not, see
 * <http://www.gnu.org/licenses/>.
 *******************************************************************************/
package com.linuxbox.enkive.web;

import static com.linuxbox.enkive.web.WebConstants.ERRORS_TAG;

import java.io.IOException;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

public abstract class AbstractJsonServlet extends EnkiveServlet {
    /**
     * 
     */
    private static final long serialVersionUID = -8772085078547445222L;
    protected static final Log LOGGER = LogFactory.getLog("com.linuxbox.enkive.webscripts");

    public AbstractJsonServlet() {
        super();
    }

    protected void addError(JSONObject queryResult, String errorMessage) {
        try {
            JSONArray errors = queryResult.optJSONArray(ERRORS_TAG);
            if (errors == null) {
                errors = new JSONArray();
                queryResult.put(ERRORS_TAG, errors);
            }
            errors.put(errorMessage);
            queryResult.put(WebConstants.STATUS_ID_TAG, WebConstants.ERROR_STATUS_VALUE);
        } catch (JSONException e) {
            LOGGER.error("could not add error to JSON query result");
        }
    }

    protected void setResponse(HttpServletResponse response, JSONObject jsonObject) {
        String jsonResultString = jsonObject.toString();
        try {
            response.getWriter().write(jsonResultString);
        } catch (IOException e) {
            LOGGER.error("Could not write webscript response");
        }
    }
}