/*!
* 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 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;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
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 );
}
}
}