it.eng.spagobi.kpi.service.KpiExporterAction.java Source code

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Here is the source code for it.eng.spagobi.kpi.service.KpiExporterAction.java

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/* SpagoBI, the Open Source Business Intelligence suite
    
 * Copyright (C) 2012 Engineering Ingegneria Informatica S.p.A. - SpagoBI Competency Center
 * This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0, without the "Incompatible With Secondary Licenses" notice. 
 * If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package it.eng.spagobi.kpi.service;

import it.eng.spago.base.SourceBean;
import it.eng.spago.dispatching.action.AbstractHttpAction;
import it.eng.spagobi.analiticalmodel.document.bo.BIObject;
import it.eng.spagobi.commons.constants.SpagoBIConstants;
import it.eng.spagobi.commons.dao.DAOFactory;
import it.eng.spagobi.engines.exporters.KpiExporter;
import it.eng.spagobi.engines.kpi.bo.KpiResourceBlock;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.util.List;

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

import org.apache.commons.collections.map.HashedMap;
import org.apache.log4j.Logger;

public class KpiExporterAction extends AbstractHttpAction {

    private static transient Logger logger = Logger.getLogger(KpiExporterAction.class);

    /**
     * This action is called by the user who wants to export the result of a Kpi in PDF
     * 
     */

    public void service(SourceBean serviceRequest, SourceBean serviceResponse) throws Exception {

        File tmpFile = null;
        logger.debug("IN");
        HttpServletRequest httpRequest = getHttpRequest();
        HttpSession session = httpRequest.getSession();

        this.freezeHttpResponse();

        try {
            // get KPI result
            List<KpiResourceBlock> listKpiBlocks = (List<KpiResourceBlock>) session.getAttribute("KPI_BLOCK");

            //List<KpiResourceBlock> listKpiBlocks=executeKpi(objectId);

            // recover BiObject Name
            Object idObject = serviceRequest.getAttribute(SpagoBIConstants.OBJECT_ID);
            if (idObject == null) {
                logger.error("Document id not found");
                return;
            }

            Integer id = Integer.valueOf(idObject.toString());
            BIObject document = DAOFactory.getBIObjectDAO().loadBIObjectById(id);
            String docName = document.getName();

            //Recover user Id
            HashedMap parameters = new HashedMap();
            String userId = null;
            Object userIdO = serviceRequest.getAttribute("user_id");
            if (userIdO != null)
                userId = userIdO.toString();

            it.eng.spagobi.engines.exporters.KpiExporter exporter = new KpiExporter();
            tmpFile = exporter.getKpiReportPDF(listKpiBlocks, document, userId);

            String outputType = "PDF";

            String mimeType = "application/pdf";

            logger.debug("Report exported succesfully");

            HttpServletResponse response = getHttpResponse();
            response.setContentType(mimeType);
            response.setHeader("Content-Disposition", "filename=\"report." + outputType + "\";");
            response.setContentLength((int) tmpFile.length());

            BufferedInputStream in = new BufferedInputStream(new FileInputStream(tmpFile));
            int b = -1;
            while ((b = in.read()) != -1) {
                response.getOutputStream().write(b);
            }
            response.getOutputStream().flush();
            in.close();
            logger.debug("OUT");

        } catch (Throwable e) {
            logger.error("An exception has occured", e);
            throw new Exception(e);
        } finally {

            tmpFile.delete();

        }
    }

}