/*!
* 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.jfreereport.legacy;
import org.pentaho.reporting.engine.classic.core.function.ColumnAggregationExpression;
import java.math.BigDecimal;
/**
* @deprecated These functions are no longer supported.
*/
public class ColumnMultiplyExpression extends ColumnAggregationExpression {
public ColumnMultiplyExpression() {
}
/**
* Return the current expression value. <P> The value depends (obviously) on the expression implementation.
*
* @return the value of the function.
*/
public Object getValue() {
Object[] values = getFieldValues();
BigDecimal computedResult = null;
for ( int i = 0; i < values.length; i++ ) {
Object value = values[ i ];
if ( value instanceof Number ) {
Number n = (Number) value;
if ( computedResult == null ) {
//noinspection ObjectToString
computedResult = new BigDecimal( n.toString() );
} else {
//noinspection ObjectToString
computedResult = computedResult.multiply( new BigDecimal( n.toString() ) );
}
}
}
if ( computedResult != null ) {
return computedResult.stripTrailingZeros();
} else {
return null;
}
}
}