/libformula-1.1.3/source/org/pentaho/reporting/libraries/formula/operators/DivideOperator.java
Java | 77 lines | 33 code | 13 blank | 31 comment | 0 complexity | f880fe6c22c61bb1f49a3eadb88dba14 MD5 | raw file
Possible License(s): LGPL-2.1
- /*
- * 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) 2006 - 2009 Pentaho Corporation and Contributors. All rights reserved.
- */
- package org.pentaho.reporting.libraries.formula.operators;
- import java.math.BigDecimal;
- import org.pentaho.reporting.libraries.formula.EvaluationException;
- import org.pentaho.reporting.libraries.formula.util.NumberUtil;
- /**
- * A division operation. This operation expects two valid numbers.
- *
- *
- * @author Thomas Morgner
- */
- public class DivideOperator extends AbstractNumericOperator
- {
- private static final long serialVersionUID = 3298154333839229191L;
- public DivideOperator()
- {
- }
- public Number evaluate(final Number number1, final Number number2) throws EvaluationException
- {
- final BigDecimal bd1 = NumberUtil.getAsBigDecimal(number1);
- final BigDecimal bd2 = NumberUtil.getAsBigDecimal(number2);
- return NumberUtil.divide(bd1, bd2);
- }
- public int getLevel()
- {
- return 100;
- }
- public String toString()
- {
- return "/";
- }
- public boolean isLeftOperation()
- {
- return true;
- }
- /**
- * Defines, whether the operation is associative. For associative operations,
- * the evaluation order does not matter, if the operation appears more than
- * once in an expression, and therefore we can optimize them a lot better than
- * non-associative operations (ie. merge constant parts and precompute them
- * once).
- *
- * @return true, if the operation is associative, false otherwise
- */
- public boolean isAssociative()
- {
- return false;
- }
- }