/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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.
*
* Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.modules.parser.data.sequence.writer;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import org.pentaho.reporting.engine.classic.core.DataFactory;
import org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.sequence.Sequence;
import org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.sequence.SequenceDataFactory;
import org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.sequence.SequenceDescription;
import org.pentaho.reporting.engine.classic.core.modules.parser.bundle.writer.BundleDataFactoryWriterHandler;
import org.pentaho.reporting.engine.classic.core.modules.parser.bundle.writer.BundleWriterException;
import org.pentaho.reporting.engine.classic.core.modules.parser.bundle.writer.BundleWriterState;
import org.pentaho.reporting.engine.classic.core.modules.parser.data.sequence.SequenceDataFactoryModule;
import org.pentaho.reporting.engine.classic.core.util.beans.BeanException;
import org.pentaho.reporting.engine.classic.core.util.beans.ConverterRegistry;
import org.pentaho.reporting.libraries.docbundle.BundleUtilities;
import org.pentaho.reporting.libraries.docbundle.WriteableDocumentBundle;
import org.pentaho.reporting.libraries.xmlns.common.AttributeList;
import org.pentaho.reporting.libraries.xmlns.writer.DefaultTagDescription;
import org.pentaho.reporting.libraries.xmlns.writer.XmlWriter;
import org.pentaho.reporting.libraries.xmlns.writer.XmlWriterSupport;
public class SequenceDataFactoryWriteHandler implements BundleDataFactoryWriterHandler
{
public SequenceDataFactoryWriteHandler()
{
}
/**
* Writes a data-source into a own file. The name of file inside the bundle is returned as string. The file name
* returned is always absolute and can be made relative by using the IOUtils of LibBase. If the writer-handler did not
* generate a file on its own, it should return null.
*
* @param bundle the bundle where to write to.
* @param state the writer state to hold the current processing information.
* @return the name of the newly generated file or null if no file was created.
* @throws IOException if any error occured
* @throws BundleWriterException if a bundle-management error occured.
*/
public String writeDataFactory(final WriteableDocumentBundle bundle,
final DataFactory dataFactory,
final BundleWriterState state)
throws IOException, BundleWriterException
{
if (bundle == null)
{
throw new NullPointerException();
}
if (dataFactory == null)
{
throw new NullPointerException();
}
if (state == null)
{
throw new NullPointerException();
}
final SequenceDataFactory sequenceDataFactory = (SequenceDataFactory) dataFactory;
final String fileName = BundleUtilities.getUniqueName(bundle, state.getFileName(),
"datasources/sequence-ds{0}.xml");
if (fileName == null)
{
throw new IOException("Unable to generate unique name for Sequence-Data-Source");
}
try
{
final OutputStream outputStream = bundle.createEntry(fileName, "text/xml");
final DefaultTagDescription tagDescription = new DefaultTagDescription();
tagDescription.setNamespaceHasCData(SequenceDataFactoryModule.NAMESPACE, false);
tagDescription.setElementHasCData(SequenceDataFactoryModule.NAMESPACE, "property", true);
final XmlWriter xmlWriter = new XmlWriter
(new OutputStreamWriter(outputStream, "UTF-8"), tagDescription, " ", "\n");
final AttributeList rootAttrs = new AttributeList();
rootAttrs.addNamespaceDeclaration("data", SequenceDataFactoryModule.NAMESPACE);
xmlWriter.writeTag(SequenceDataFactoryModule.NAMESPACE, "sequence-datasource", rootAttrs, XmlWriterSupport.OPEN);
final String[] tables = sequenceDataFactory.getQueryNames();
for (int i = 0; i < tables.length; i++)
{
final String queryName = tables[i];
final Sequence sequence = sequenceDataFactory.getSequence(queryName);
final AttributeList sequenceAttributes = new AttributeList();
sequenceAttributes.setAttribute(SequenceDataFactoryModule.NAMESPACE, "name", queryName);
sequenceAttributes.setAttribute(SequenceDataFactoryModule.NAMESPACE, "class", sequence.getClass().getName());
xmlWriter.writeTag(SequenceDataFactoryModule.NAMESPACE, "sequence", sequenceAttributes, XmlWriterSupport.OPEN);
final SequenceDescription sequenceDescription = sequence.getSequenceDescription();
final int parameterCount = sequenceDescription.getParameterCount();
for (int p = 0; p < parameterCount; p++)
{
final String paramName = sequenceDescription.getParameterName(p);
final Object parameter = sequence.getParameter(paramName);
if (parameter == null)
{
continue;
}
final String attrValue = ConverterRegistry.toAttributeValue(parameter);
xmlWriter.writeTag(SequenceDataFactoryModule.NAMESPACE, "property", "name", paramName, XmlWriterSupport.OPEN);
xmlWriter.writeTextNormalized(attrValue, true);
xmlWriter.writeCloseTag();
}
xmlWriter.writeCloseTag();
}
xmlWriter.writeCloseTag();
xmlWriter.close();
return fileName;
}
catch (BeanException e)
{
throw new BundleWriterException("Unable to serialize sequence parameter", e);
}
}
}