org.pentaho.reporting.libraries.formula.operators

Class SubtractOperator

public class SubtractOperator extends AbstractNumericOperator

Creation-Date: 31.10.2006, 16:34:11

Author: Thomas Morgner

Constructor Summary
SubtractOperator()
Method Summary
intgetLevel()
booleanisAssociative()
Defines, whether the operation is associative.
booleanisLeftOperation()
StringtoString()

Constructor Detail

SubtractOperator

public SubtractOperator()

Method Detail

getLevel

public int getLevel()

isAssociative

public boolean isAssociative()
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).

Returns: true, if the operation is associative, false otherwise

isLeftOperation

public boolean isLeftOperation()

toString

public String toString()