/*
* 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 - 2009 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.states.datarow;
import java.util.HashMap;
import org.pentaho.reporting.engine.classic.core.DataRow;
import org.pentaho.reporting.engine.classic.core.ParameterMapping;
import org.pentaho.reporting.engine.classic.core.wizard.DataAttributes;
import org.pentaho.reporting.engine.classic.core.wizard.DataSchema;
/**
* Creation-Date: 06.03.2006, 18:15:06
*
* @author Thomas Morgner
*/
public class ImportedVariablesDataRow extends StaticDataRow
{
private HashMap dataAttributes;
private String[] outerNames;
private String[] innerNames;
public ImportedVariablesDataRow(final MasterDataRow innerRow)
{
if (innerRow == null)
{
throw new NullPointerException();
}
final DataRow globalView = innerRow.getGlobalView();
final String[] names = globalView.getColumnNames();
final int cols = names.length;
this.dataAttributes = new HashMap();
this.outerNames = new String[cols];
this.innerNames = outerNames;
final Object[] values = new Object[cols];
final DataSchema dataSchema = innerRow.getDataSchema();
for (int i = 0; i < cols; i++)
{
final String name = names[i];
if (name == null)
{
throw new IllegalStateException("Every column must have a name.");
}
outerNames[i] = name;
values[i] = globalView.get(name);
dataAttributes.put(name, dataSchema.getAttributes(name));
}
setData(outerNames, values);
}
/**
* Maps the inner-row into the outer data row. The parameter mapping's name represents the *outer* name and the
* innernames.
*
* @param innerRow
* @param parameterMappings
*/
public ImportedVariablesDataRow(final MasterDataRow innerRow,
final ParameterMapping[] parameterMappings)
{
if (innerRow == null)
{
throw new NullPointerException();
}
if (parameterMappings == null)
{
throw new NullPointerException();
}
final DataRow globalView = innerRow.getGlobalView();
final int cols = parameterMappings.length;
this.dataAttributes = new HashMap();
this.outerNames = new String[cols];
this.innerNames = outerNames;
final Object[] values = new Object[cols];
final DataSchema dataSchema = innerRow.getDataSchema();
for (int i = 0; i < cols; i++)
{
final ParameterMapping mapping = parameterMappings[i];
final String name = mapping.getAlias();
if (name == null)
{
throw new IllegalStateException("Every column must have a name.");
}
outerNames[i] = name;
values[i] = globalView.get(name);
dataAttributes.put(mapping.getName(), dataSchema.getAttributes(name));
}
setData(outerNames, values);
}
protected ImportedVariablesDataRow(final ImportedVariablesDataRow dataRow)
{
super(dataRow);
outerNames = dataRow.outerNames;
innerNames = dataRow.innerNames;
dataAttributes = (HashMap) dataRow.dataAttributes.clone();
}
public ImportedVariablesDataRow refresh(final DataRow globalView, final DataSchema dataSchema)
{
if (globalView == null)
{
throw new NullPointerException();
}
if (dataSchema == null)
{
throw new NullPointerException();
}
final int length = innerNames.length;
final Object[] values = new Object[length];
for (int i = 0; i < length; i++)
{
final String name = innerNames[i];
values[i] = globalView.get(name);
dataAttributes.put(outerNames[i], dataSchema.getAttributes(name));
}
final ImportedVariablesDataRow idr = new ImportedVariablesDataRow(this);
idr.setData(outerNames, values);
return idr;
}
public DataAttributes getAttributes(final String name)
{
if (name == null)
{
throw new NullPointerException();
}
return (DataAttributes) dataAttributes.get(name);
}
}