org.pentaho.reporting.libraries.formula.operators

Class NotEqualOperator

public class NotEqualOperator extends Object implements InfixOperator

Creation-Date: 31.10.2006, 16:34:11

Author: Thomas Morgner

Constructor Summary
	NotEqualOperator()

Method Summary
TypeValuePair	evaluate(FormulaContext context, TypeValuePair value1, TypeValuePair value2)
int	getLevel()
boolean	isAssociative() Defines, whether the operation is associative.
boolean	isLeftOperation() Defines the bind-direction of the operator.
String	toString()

Method Detail

evaluate

public TypeValuePair evaluate(FormulaContext context, TypeValuePair value1, TypeValuePair value2)

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()

Defines the bind-direction of the operator. That direction defines, in which direction a sequence of equal operators is resolved.

Returns: true, if the operation is left-binding, false if right-binding

toString

public String toString()