com.stgmastek.birt.report.utils.ReportUtility.java Source code

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Here is the source code for com.stgmastek.birt.report.utils.ReportUtility.java

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/*
 * Copyright (c) 2014 Mastek Ltd. All rights reserved.
 * 
 * This file is part of JBEAM. JBEAM 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.
 *
 * JBEAM 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 the specific language governing permissions and 
 * limitations.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with JBEAM. If not, see <http://www.gnu.org/licenses/>.
 */
package com.stgmastek.birt.report.utils;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;

import org.apache.commons.io.IOUtils;
import org.eclipse.birt.report.engine.api.IReportEngine;
import org.eclipse.birt.report.engine.api.IReportRunnable;

import stg.utils.ResourceUtils;

import com.stgmastek.birt.report.beans.Report;
import com.stgmastek.birt.report.exceptions.ReportServiceException;

public class ReportUtility {
    public static IReportRunnable getReportRunnable(IReportEngine engine, Report report) {
        // Convert the Design File Identifier to relative (from classes) path
        String reportFileFQName = report.getDesignFileIdentifier();
        int extensionDotIndex = reportFileFQName.lastIndexOf('.');
        String reportFileName = reportFileFQName.substring(0, extensionDotIndex);
        String designFileRelativePath = "/" + reportFileName.replace('.', '/')
                + reportFileFQName.substring(extensionDotIndex);

        // Read Design File
        InputStream is;
        try {
            is = ResourceUtils.getResourceAsStream(ReportUtility.class, designFileRelativePath);
        } catch (IOException e) {
            throw new ReportServiceException("Could not locate Report Design file #" + designFileRelativePath, e);
        }

        // convert to Byte Array Stream
        ByteArrayInputStream bis = null;
        try {
            byte bytes[] = IOUtils.toByteArray(is);
            bis = new ByteArrayInputStream(bytes);
        } catch (IOException e) {
            String msg = "Exception while converting the read InputStream of design file : ["
                    + designFileRelativePath + "] to ByteArrayStream";
            throw new ReportServiceException(msg, e);
        }

        IReportRunnable reportRunnable = null;
        try {
            reportRunnable = engine.openReportDesign(bis);
        } catch (Exception e) {
            String msg = "Exception while creating Runnable Report : [" + e.getMessage() + "] for Design File : ["
                    + designFileRelativePath + "]";
            throw new ReportServiceException(msg, e);
        }

        return reportRunnable;
    }

    private static StringBuffer buffer = new StringBuffer(1000);

    public static String getCompleteFileName(Report report) {
        buffer.setLength(0);

        buffer.append(report.getFilePath());
        if (report.getFilePath().endsWith("/") == false)
            buffer.append("/");

        // strip extension, if provided
        int separaterIndex = report.getFileName().lastIndexOf('.');
        String fileName = report.getFileName();
        if (separaterIndex != -1) {
            fileName = fileName.substring(0, separaterIndex);
        }
        buffer.append(fileName);
        return buffer.toString();
    }
}