/**
* 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 it.eng.qbe.serializer.IDeserializer;
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 java.util.ArrayList;
import java.util.List;
import org.apache.log4j.Logger;
import org.json.JSONArray;
import org.json.JSONObject;
/**
* @authors Alberto Ghedin (alberto.ghedin@eng.it)
*
*/
public class WorkSheetJSONDeserializer implements IDeserializer {
public static transient Logger logger = Logger.getLogger(WorkSheetJSONDeserializer.class);
public WorkSheetDefinition deserialize(Object o) throws SerializationException {
WorkSheetDefinition workSheetDefinition = null;
JSONObject workSheetDefinitionJSON = null;
logger.debug("IN");
try {
Assert.assertNotNull(o, "Object to be deserialized cannot be null");
if(o instanceof String) {
logger.debug("Deserializing string [" + (String)o + "]");
try {
workSheetDefinitionJSON = new JSONObject( (String)o );
} catch(Throwable t) {
logger.debug("Object to be deserialized must be string encoding a JSON object");
throw new SerializationException("An error occurred while deserializing query: " + (String)o, t);
}
} else if(o instanceof JSONObject) {
workSheetDefinitionJSON = (JSONObject)o;
} else {
Assert.assertUnreachable("Object to be deserialized must be of type string or of type JSONObject, not of type [" + o.getClass().getName() + "]");
}
workSheetDefinition = new WorkSheetDefinition();
try {
deserializeSheets(workSheetDefinitionJSON, workSheetDefinition);
} catch (Exception e) {
throw new SerializationException("An error occurred while deserializing worksheet: " + workSheetDefinitionJSON.toString(), e);
}
} finally {
logger.debug("OUT");
}
logger.debug("Worksheet deserialized");
return workSheetDefinition;
}
/**
* Deserialize the list of sheets
* @param crosstabDefinitionJSON
* @param crosstabDefinition
* @throws Exception
*/
private void deserializeSheets(JSONObject crosstabDefinitionJSON, WorkSheetDefinition crosstabDefinition) throws Exception {
JSONArray sheetsJSON = crosstabDefinitionJSON.getJSONArray(WorkSheetSerializationCostants.SHEETS);
List<WorkSheet> workSheets = new ArrayList<WorkSheet>();
for(int i=0; i<sheetsJSON.length(); i++){
workSheets.add(deserializeSheet(sheetsJSON.getJSONObject(i)));
}
crosstabDefinition.setWorkSheet(workSheets);
}
/**
* Deserialize the Sheet
* @param sheetJSON
* @return
* @throws Exception
*/
private WorkSheet deserializeSheet(JSONObject sheetJSON) throws Exception {
String name = sheetJSON.getString(WorkSheetSerializationCostants.NAME);
JSONObject header = sheetJSON.optJSONObject(WorkSheetSerializationCostants.HEADER);
JSONObject filters = sheetJSON.optJSONObject(WorkSheetSerializationCostants.FILTERS);
String layout = sheetJSON.optString(WorkSheetSerializationCostants.LAYOUT);
JSONObject content = sheetJSON.optJSONObject(WorkSheetSerializationCostants.CONTENT);
JSONObject footer = sheetJSON.optJSONObject(WorkSheetSerializationCostants.FOOTER);
return new WorkSheet(name, layout, header, filters, content, footer);
}
}