Package it.eng.spagobi.engines.qbe.services.formbuilder

Source Code of it.eng.spagobi.engines.qbe.services.formbuilder.GetFormPreviewAction

/**

SpagoBI - The Business Intelligence Free Platform

Copyright (C) 2005-2009 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.services.formbuilder;
   
import it.eng.spago.base.SourceBean;
import it.eng.spagobi.engines.qbe.FormState;
import it.eng.spagobi.engines.qbe.QbeEngineInstance;
import it.eng.spagobi.engines.qbe.services.core.AbstractQbeEngineAction;
import it.eng.spagobi.engines.qbe.services.initializers.FormEngineStartAction;
import it.eng.spagobi.utilities.assertion.Assert;
import it.eng.spagobi.utilities.engines.SpagoBIEngineStartupException;

import org.apache.log4j.Logger;

/**
* @author Davide Zerbetto (davide.zerbetto@eng.it)
*/
public class GetFormPreviewAction extends AbstractQbeEngineAction {
 
  /** Logger component. */
    private static transient Logger logger = Logger.getLogger(GetFormPreviewAction.class);
  
  public void service(SourceBean request, SourceBean response)  {
   
    logger.debug("IN");
   
    try {   
      super.service(request, response);
     
      QbeEngineInstance engineInstance = getEngineInstance();
      Assert.assertNotNull(engineInstance, "It's not possible to execute " + this.getActionName() + " service before having properly created an instance of EngineInstance class");
     
      FormState fs = engineInstance.getFormState();
      Assert.assertTrue(fs != null && fs.getConf() != null,
          "It's not possible to execute " + this.getActionName() + " service before having properly created a form template");
     
      setAttribute(FormEngineStartAction.ENGINE_INSTANCE, engineInstance);
     
    } catch(Throwable e) {
      SpagoBIEngineStartupException serviceException = null;
     
      if(e instanceof SpagoBIEngineStartupException) {
        serviceException = (SpagoBIEngineStartupException)e;
      } else {
        Throwable rootException = e;
        while(rootException.getCause() != null) {
          rootException = rootException.getCause();
        }
        String str = rootException.getMessage()!=null? rootException.getMessage(): rootException.getClass().getName();
        String message = "An unpredicted error occurred while executing " + this.getActionName() + " service."
                 + "\nThe root cause of the error is: " + str;
       
        serviceException = new SpagoBIEngineStartupException(getActionName(), message, e);
      }
     
      throw serviceException;
    } finally {     
      logger.debug("OUT");
   
  }
}
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