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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.engine.util;

import java.io.BufferedOutputStream;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.io.OutputStream;

import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRRuntimeException;


/**
 * Utility class that can be used when serializable objects must be saved on disk 
 * or sent over the network through an output stream.
 * 

* Both the {@link net.sf.jasperreports.engine.design.JasperDesign} and * {@link net.sf.jasperreports.engine.JasperReport} classes implement the * java.io.Serializable interface. This allows users to store their report templates as * serialized objects either in their fully modifiable state * ({@link net.sf.jasperreports.engine.design.JasperDesign} objects) or in their * compiled form ({@link net.sf.jasperreports.engine.JasperReport} objects), using * various methods exposed by this class. *

* @author Teodor Danciu ([email protected]) */ public final class JRSaver { public static final String EXCEPTION_MESSAGE_KEY_EXPRESSIONS_CLASS_FILE_SAVE_ERROR = "util.saver.expressions.class.file.save.error"; public static final String EXCEPTION_MESSAGE_KEY_FILE_SAVE_ERROR = "util.saver.file.save.error"; public static final String EXCEPTION_MESSAGE_KEY_OUTPUT_STREAM_SAVE_ERROR = "util.saver.output.stream.save.error"; /** * */ public static void saveObject( Object obj, String fileName ) throws JRException { saveObject( obj, new File(fileName) ); } /** * */ public static void saveObject( Object obj, File file ) throws JRException { FileOutputStream fos = null; ObjectOutputStream oos = null; try { fos = new FileOutputStream(file); BufferedOutputStream bos = new BufferedOutputStream(fos); oos = new ObjectOutputStream(bos); oos.writeObject(obj); oos.flush(); bos.flush(); fos.flush(); } catch (IOException e) { throw new JRException( EXCEPTION_MESSAGE_KEY_FILE_SAVE_ERROR, new Object[]{file}, e); } finally { if (oos != null) { try { oos.close(); } catch(IOException e) { } } if (fos != null) { try { fos.close(); } catch(IOException e) { } } } } /** * */ public static void saveObject( Object obj, OutputStream os ) throws JRException { ObjectOutputStream oos = null; try { oos = new ObjectOutputStream(os); oos.writeObject(obj); oos.flush(); } catch (IOException e) { throw new JRException( EXCEPTION_MESSAGE_KEY_OUTPUT_STREAM_SAVE_ERROR, null, e); } } /** * */ public static void saveClassSource( String source, File file ) throws JRException { FileWriter fwriter = null; try { fwriter = new FileWriter(file); BufferedWriter bufferedWriter = new BufferedWriter(fwriter); bufferedWriter.write(source); bufferedWriter.flush(); fwriter.flush(); } catch (IOException e) { throw new JRException( EXCEPTION_MESSAGE_KEY_EXPRESSIONS_CLASS_FILE_SAVE_ERROR, new Object[]{file}, e); } finally { if (fwriter != null) { try { fwriter.close(); } catch(IOException e) { } } } } /** * */ public static void saveResource(String resource, File file) { FileOutputStream fos = null; try { fos = new FileOutputStream(file); fos.write(JRLoader.loadBytesFromResource(resource)); } catch (JRException e) { throw new JRRuntimeException(e); } catch (IOException e) { throw new JRRuntimeException(e); } finally { if (fos != null) { try { fos.close(); } catch(IOException e) { } } } } private JRSaver() { } }




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