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/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2014 TIBCO Software Inc. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports 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 3 of the License, or
* (at your option) any later version.
*
* JasperReports 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 JasperReports. If not, see .
*/
package net.sf.jasperreports.web.servlets;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.sf.jasperreports.engine.JRConstants;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRRuntimeException;
import net.sf.jasperreports.engine.export.JsonExporter;
import net.sf.jasperreports.export.SimpleExporterInput;
import net.sf.jasperreports.export.SimpleJsonReportConfiguration;
import net.sf.jasperreports.export.SimpleWriterExporterOutput;
import net.sf.jasperreports.web.WebReportContext;
import net.sf.jasperreports.web.util.ReportExecutionHyperlinkProducerFactory;
import net.sf.jasperreports.web.util.WebUtil;
/**
* @author Narcis Marcu([email protected])
*/
public class ReportJiveComponentsServlet extends AbstractServlet
{
private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;
/**
*
*/
public void service(
HttpServletRequest request,
HttpServletResponse response
) throws IOException, ServletException
{
setNoExpire(response);
response.setContentType(JSON_CONTENT_TYPE);
PrintWriter out = response.getWriter();
String contextId = request.getParameter(WebReportContext.REQUEST_PARAMETER_REPORT_CONTEXT_ID);
if (contextId != null && request.getHeader("accept").indexOf(JSON_ACCEPT_HEADER) >= 0) {
WebReportContext webReportContext = WebReportContext.getInstance(request, false);
if (webReportContext != null) {
try {
getReportComponents(request, webReportContext, out);
} catch (JRException e) {
response.setStatus(404);
out.println("{\"msg\": \"JasperReports encountered an error!\"}");
return;
}
} else {
response.setStatus(404);
out.println("{\"msg\": \"Resource with id '" + contextId + "' not found!\"}");
return;
}
} else {
response.setStatus(400);
out.println("{\"msg\": \"Wrong parameters!\"}");
}
}
/**
*
*/
public void getReportComponents(
HttpServletRequest request,
WebReportContext webReportContext,
PrintWriter writer
) throws JRException //IOException, ServletException
{
JasperPrintAccessor jasperPrintAccessor = (JasperPrintAccessor) webReportContext.getParameterValue(
WebReportContext.REPORT_CONTEXT_PARAMETER_JASPER_PRINT_ACCESSOR);
ReportExecutionStatus reportStatus = jasperPrintAccessor.getReportStatus();
if (reportStatus.getStatus() == ReportExecutionStatus.Status.ERROR)
{
throw new JRRuntimeException("Error occurred during report generation", reportStatus.getError());
}
//Integer pageCount = reportStatus.getTotalPageCount();
// if the page count is null, it means that the fill is not yet done but there is at least a page
//boolean hasPages = pageCount == null || pageCount > 0;//FIXMEJIVE we should call pageStatus here
boolean hasPages = jasperPrintAccessor.pageStatus(0, null).pageExists();
JsonExporter exporter = new JsonExporter(getJasperReportsContext());
SimpleJsonReportConfiguration configuration = new SimpleJsonReportConfiguration();
ReportPageStatus pageStatus;
if (hasPages)
{
String reportPage = request.getParameter(WebUtil.REQUEST_PARAMETER_PAGE);
int pageIdx = reportPage == null ? 0 : Integer.parseInt(reportPage);
String pageTimestamp = request.getParameter(WebUtil.REQUEST_PARAMETER_PAGE_TIMESTAMP);
Long timestamp = pageTimestamp == null ? null : Long.valueOf(pageTimestamp);
pageStatus = jasperPrintAccessor.pageStatus(pageIdx, timestamp);
if (!pageStatus.pageExists())
{
throw new JRRuntimeException("Page " + pageIdx + " not found in report");
}
configuration.setPageIndex(pageIdx);
}
else
{
pageStatus = ReportPageStatus.PAGE_FINAL;
}
exporter.setReportContext(webReportContext);
exporter.setExporterInput(new SimpleExporterInput(jasperPrintAccessor.getJasperPrint()));
exporter.setExporterOutput(new SimpleWriterExporterOutput(writer));
configuration.setHyperlinkProducerFactory(
ReportExecutionHyperlinkProducerFactory.getInstance(getJasperReportsContext(), request)
);
exporter.setConfiguration(configuration);
exporter.exportReport();
}
/**
*
*/
protected String getHeader(HttpServletRequest request, WebReportContext webReportContext, boolean hasPages,
ReportPageStatus pageStatus)
{
// Map contextMap = new HashMap();
//
// JasperPrintAccessor jasperPrintAccessor = (JasperPrintAccessor) webReportContext.getParameterValue(
// WebReportContext.REPORT_CONTEXT_PARAMETER_JASPER_PRINT_ACCESSOR);
// contextMap.put("totalPages", jasperPrintAccessor.getReportStatus().getTotalPageCount());
//
// String reportPage = request.getParameter(WebUtil.REQUEST_PARAMETER_PAGE);
// contextMap.put("currentPage", (reportPage != null ? reportPage : "0"));
//
// if (!pageStatus.isPageFinal())
// {
// contextMap.put("pageTimestamp", String.valueOf(pageStatus.getTimestamp()));
// }
//
// if (hasPages)
// {
// return VelocityUtil.processTemplate(TEMPLATE_HEADER, contextMap);
// } else
// {
// return VelocityUtil.processTemplate(TEMPLATE_HEADER_NOPAGES, contextMap);
// }
return null;
}
/**
*
*/
protected String getBetweenPages(HttpServletRequest request, WebReportContext webReportContext)
{
// return VelocityUtil.processTemplate(TEMPLATE_BETWEEN_PAGES, new HashMap());
return null;
}
/**
*
*/
protected String getFooter(HttpServletRequest request, WebReportContext webReportContext, boolean hasPages,
ReportPageStatus pageStatus)
{
// Map contextMap = new HashMap();
// if (hasPages) {
// return VelocityUtil.processTemplate(TEMPLATE_FOOTER, contextMap);
// } else
// {
// return VelocityUtil.processTemplate(TEMPLATE_FOOTER_NOPAGES, contextMap);
// }
return null;
}
}
