Package it.eng.spagobi.engines.qbe.worksheet.serializer.json

Source Code of it.eng.spagobi.engines.qbe.worksheet.serializer.json.WorkSheetJSONSerializer

/**
* SpagoBI - The Business Intelligence Free Platform
*
* Copyright (C) 2004 - 2008 Engineering Ingegneria Informatica S.p.A.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.

* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*
**/
package it.eng.spagobi.engines.qbe.worksheet.serializer.json;

import java.util.List;

import it.eng.qbe.serializer.ISerializer;
import it.eng.qbe.serializer.SerializationException;
import it.eng.spagobi.engines.qbe.worksheet.WorkSheet;
import it.eng.spagobi.engines.qbe.worksheet.WorkSheetDefinition;
import it.eng.spagobi.utilities.assertion.Assert;

import org.apache.log4j.Logger;
import org.json.JSONArray;
import org.json.JSONObject;

/**
* @authors Alberto Ghedin (alberto.ghedin@eng.it)
*
*/
public class WorkSheetJSONSerializer implements ISerializer {

  /** Logger component. */
    public static transient Logger logger = Logger.getLogger(WorkSheetJSONSerializer.class);
   
   
  public Object serialize(Object o) throws SerializationException {
   
    logger.debug("IN");
    logger.debug("Serializing the worksheet");
   
    JSONObject toReturn = null;
    WorkSheetDefinition workSheetDefinition;
       
    Assert.assertNotNull(o, "Input parameter cannot be null");
    Assert.assertTrue(o instanceof WorkSheetDefinition, "Unable to serialize objects of type [" + o.getClass().getName() + "]");
   
    try {
      toReturn = new JSONObject();
     
      workSheetDefinition = (WorkSheetDefinition)o;
     
      JSONArray sheets = serializeSheets(workSheetDefinition.getWorkSheet());
      toReturn.put(WorkSheetSerializationCostants.SHEETS, sheets);
    } catch (Throwable t) {
      throw new SerializationException("An error occurred while serializing object: " + o, t);
    } finally {
      logger.debug("OUT");
    }
    logger.debug("Worksheet serialized");
    return toReturn;
  }
 
  private JSONArray serializeSheets(List<WorkSheet> sheets) throws SerializationException{
    JSONArray jsonSheets = new JSONArray();
    for(int i=0; i<sheets.size(); i++){
      jsonSheets.put(serializeSheet(sheets.get(i)));
    }
    return jsonSheets;
  }
 
  private JSONObject serializeSheet(WorkSheet sheet) throws SerializationException{
    logger.debug("IN");
    logger.debug("Serializing the sheet "+sheet.getName());
    JSONObject jsonSheet = new JSONObject();
    try {
      jsonSheet.put(WorkSheetSerializationCostants.NAME, sheet.getName());
      jsonSheet.put(WorkSheetSerializationCostants.LAYOUT, sheet.getLayout());
      jsonSheet.put(WorkSheetSerializationCostants.HEADER, sheet.getHeader());
      jsonSheet.put(WorkSheetSerializationCostants.FILTERS, sheet.getFilters());
      jsonSheet.put(WorkSheetSerializationCostants.CONTENT, sheet.getContent());
      jsonSheet.put(WorkSheetSerializationCostants.FOOTER, sheet.getFooter());
     
    } catch (Exception e) {
      logger.error("Error serializing the sheet "+sheet.getName(),e);
      throw new SerializationException("Error serializing the sheet "+sheet.getName(),e);
    } finally{
      logger.debug("OUT");
    }
    logger.debug("Serialized the sheet "+sheet.getName());
    return jsonSheet;
   
  }

}
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