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/**
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* Copyright (C) 2007 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.io.dwca.out;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.PrintWriter;
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import java.io.UnsupportedEncodingException;
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import javax.xml.stream.XMLOutputFactory;
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import javax.xml.stream.XMLStreamException;
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import javax.xml.stream.XMLStreamWriter;
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import org.apache.log4j.Logger;
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import eu.etaxonomy.cdm.io.common.CdmExportBase;
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import eu.etaxonomy.cdm.io.common.ICdmExport;
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import eu.etaxonomy.cdm.io.common.mapping.out.IExportTransformer;
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/**
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* @author a.mueller
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\* @since 18.04.2011
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*
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*/
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public abstract class DwcaExportBase
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extends CdmExportBase<DwcaTaxExportConfigurator, DwcaTaxExportState, IExportTransformer, File>
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implements ICdmExport<DwcaTaxExportConfigurator, DwcaTaxExportState>{
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private static final long serialVersionUID = -3214410418410044139L;
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@SuppressWarnings("unused")
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private static final Logger logger = Logger.getLogger(DwcaExportBase.class);
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protected static final boolean IS_CORE = true;
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protected DwcaTaxExportFile file;
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/**
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* @param config
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* @return
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* @throws IOException
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* @throws FileNotFoundException
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*/
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protected FileOutputStream createFileOutputStream(DwcaTaxExportConfigurator config, String thisFileName) throws IOException, FileNotFoundException {
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String filePath = config.getDestinationNameString();
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String fileName = filePath + File.separatorChar + thisFileName;
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File f = new File(fileName);
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if (!f.exists()){
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f.createNewFile();
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}
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FileOutputStream fos = new FileOutputStream(f);
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return fos;
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}
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/**
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* @param state
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* @param table
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* @return
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* @throws IOException
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* @throws FileNotFoundException
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* @throws XMLStreamException
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*/
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protected XMLStreamWriter createXmlStreamWriter(DwcaTaxExportState state, DwcaTaxExportFile table)
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throws IOException, FileNotFoundException, XMLStreamException {
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XMLOutputFactory factory = XMLOutputFactory.newInstance();
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OutputStream os;
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boolean useZip = state.isZip();
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if (useZip){
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os = state.getZipStream(table.getTableName());
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}else if(state.getConfig().getDestination() != null){
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os = createFileOutputStream(state.getConfig(), table.getTableName());
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}else{
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os = new ByteArrayOutputStream();
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state.getProcessor().put(table, (ByteArrayOutputStream)os);
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}
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XMLStreamWriter writer = factory.createXMLStreamWriter(os);
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return writer;
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}
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/**
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* @param state
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* @param file
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* @return
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* @throws IOException
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* @throws FileNotFoundException
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* @throws UnsupportedEncodingException
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*/
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protected PrintWriter createPrintWriter(DwcaTaxExportState state, DwcaTaxExportFile file)
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throws IOException, FileNotFoundException, UnsupportedEncodingException {
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PrintWriter writer = state.getWriter(file);
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if (writer == null){
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boolean useZip = state.isZip();
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OutputStream os;
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if (useZip){
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os = state.getZipStream(file.getTableName());
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}else if(state.getConfig().getDestination() != null){
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os = createFileOutputStream(state.getConfig(), file.getTableName());
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}else{
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os = new ByteArrayOutputStream();
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state.getProcessor().put(file, (ByteArrayOutputStream)os);
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}
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writer = new PrintWriter(os);
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state.putWriter(file, writer);
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}
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return writer;
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}
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/**
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* flushes the writer for the according file if exists.
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*/
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protected void flushWriter(DwcaTaxExportState state, DwcaTaxExportFile file) {
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PrintWriter writer = state.getWriter(file);
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if (writer != null){
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writer.flush();
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}
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}
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/**
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* Closes the writer
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* @param file
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* @param state
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*/
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protected void closeWriter(DwcaTaxExportState state) {
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PrintWriter writer = state.getWriter(file);
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if (writer != null && state.isZip() == false){
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writer.close();
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}
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}
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/**
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* Closes the writer.
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* Note: XMLStreamWriter does not close the underlying stream.
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* @param writer
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* @param state
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*/
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protected void closeWriter(XMLStreamWriter writer, DwcaTaxExportState state) {
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if (writer != null && state.isZip() == false){
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try {
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writer.close();
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} catch (XMLStreamException e) {
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throw new RuntimeException(e);
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}
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}
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}
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}
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