/*
* 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) 2001 - 2013 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.modules.parser.data.inlinedata.writer;
import org.pentaho.reporting.engine.classic.core.DataFactory;
import org.pentaho.reporting.engine.classic.core.ReportDataFactoryException;
import org.pentaho.reporting.engine.classic.core.TableDataFactory;
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.inlinedata.InlineDataFactoryModule;
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.base.util.ObjectUtilities;
import org.pentaho.reporting.libraries.base.util.StringUtils;
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 javax.swing.table.TableModel;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
public class TableDataFactoryWriteHandler implements BundleDataFactoryWriterHandler {
public TableDataFactoryWriteHandler() {
}
/**
* 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();
}
try {
final TableDataFactory tableDataFactory = (TableDataFactory) dataFactory;
final String fileName =
BundleUtilities.getUniqueName( bundle, state.getFileName(), "datasources/inline-ds{0}.xml" );
if ( fileName == null ) {
throw new IOException( "Unable to generate unique name for Inline-Data-Source" );
}
final OutputStream outputStream = bundle.createEntry( fileName, "text/xml" );
final DefaultTagDescription tagDescription = new DefaultTagDescription();
tagDescription.setNamespaceHasCData( InlineDataFactoryModule.NAMESPACE, false );
tagDescription.setElementHasCData( InlineDataFactoryModule.NAMESPACE, "data", true );
final XmlWriter xmlWriter =
new XmlWriter( new OutputStreamWriter( outputStream, "UTF-8" ), tagDescription, " ", "\n" );
final AttributeList rootAttrs = new AttributeList();
rootAttrs.addNamespaceDeclaration( "data", InlineDataFactoryModule.NAMESPACE );
xmlWriter.writeTag( InlineDataFactoryModule.NAMESPACE, "inline-datasource", rootAttrs, XmlWriterSupport.OPEN );
final String[] tables = tableDataFactory.getQueryNames();
for ( int i = 0; i < tables.length; i++ ) {
final String tableName = tables[i];
final TableModel tableModel = tableDataFactory.queryData( tableName, null );
xmlWriter
.writeTag( InlineDataFactoryModule.NAMESPACE, "inline-table", "name", tableName, XmlWriterSupport.OPEN );
xmlWriter.writeTag( InlineDataFactoryModule.NAMESPACE, "definition", XmlWriterSupport.OPEN );
final Class[] colTypes = new Class[tableModel.getColumnCount()];
for ( int col = 0; col < tableModel.getColumnCount(); col += 1 ) {
final AttributeList colAttrs = new AttributeList();
final String columnName = tableModel.getColumnName( col );
colAttrs.setAttribute( InlineDataFactoryModule.NAMESPACE, "name", StringUtils.isEmpty( columnName )
? "<empty-" + col + ">" : columnName );
final Class columnClass = tableModel.getColumnClass( col );
if ( columnClass == null ) {
colAttrs.setAttribute( InlineDataFactoryModule.NAMESPACE, "type", Object.class.getName() );
colTypes[col] = Object.class;
} else {
colAttrs.setAttribute( InlineDataFactoryModule.NAMESPACE, "type", columnClass.getName() );
colTypes[col] = columnClass;
}
xmlWriter.writeTag( InlineDataFactoryModule.NAMESPACE, "column", colAttrs, XmlWriterSupport.CLOSE );
}
xmlWriter.writeCloseTag(); // definition
for ( int row = 0; row < tableModel.getRowCount(); row += 1 ) {
xmlWriter.writeTag( InlineDataFactoryModule.NAMESPACE, "row", XmlWriterSupport.OPEN );
for ( int col = 0; col < tableModel.getColumnCount(); col += 1 ) {
final AttributeList colAttrs = new AttributeList();
final Object value = tableModel.getValueAt( row, col );
if ( value == null ) {
colAttrs.setAttribute( InlineDataFactoryModule.NAMESPACE, "null", "true" );
xmlWriter.writeTag( InlineDataFactoryModule.NAMESPACE, "data", colAttrs, XmlWriterSupport.CLOSE );
} else {
final Class valueClass = value.getClass();
if ( ObjectUtilities.equal( colTypes[col], valueClass ) == false ) {
colAttrs.setAttribute( InlineDataFactoryModule.NAMESPACE, "type", valueClass.getName() );
}
try {
final String s = ConverterRegistry.toAttributeValue( value );
xmlWriter.writeTag( InlineDataFactoryModule.NAMESPACE, "data", colAttrs, XmlWriterSupport.OPEN );
xmlWriter.writeTextNormalized( s, true );
xmlWriter.writeCloseTag();
} catch ( BeanException e ) {
throw new BundleWriterException( "Unable to convert value at (row:" + row + ";column:" + col
+ ") into a string." + value.getClass() );
}
}
}
xmlWriter.writeCloseTag(); // row
}
xmlWriter.writeCloseTag(); // inline-table
}
xmlWriter.writeCloseTag();
xmlWriter.close();
return fileName;
} catch ( ReportDataFactoryException e ) {
throw new BundleWriterException(
"This should not happen in the way we use the table-factory, but hey, better safe than sorry." );
}
}
}