Package org.pentaho.reporting.libraries.formula.operators

Class EqualOperator

java.lang.Object
org.pentaho.reporting.libraries.formula.operators.EqualOperator
All Implemented Interfaces:
Serializable, InfixOperator
public class EqualOperator extends Object implements InfixOperator
Creation-Date: 31.10.2006, 16:34:11
Author:
Thomas Morgner
See Also:

  • Constructor Details

    • EqualOperator

      public EqualOperator()

  • Method Details

    • evaluate

      public TypeValuePair evaluate(FormulaContext context, TypeValuePair value1, TypeValuePair value2) throws EvaluationException
      Description copied from interface: InfixOperator
      Evaluates the comptuation for both parameters. This method must never return null.
      Specified by:
      evaluate in interface InfixOperator
      Parameters:
      context -
      value1 -
      value2 -
      Returns:
      Throws:
      EvaluationException

    • getLevel

      public int getLevel()
      Specified by:
      getLevel in interface InfixOperator

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • isLeftOperation

      public boolean isLeftOperation()
      Description copied from interface: InfixOperator
      Defines the bind-direction of the operator. That direction defines, in which direction a sequence of equal operators is resolved.
      Specified by:
      isLeftOperation in interface InfixOperator
      Returns:
      true, if the operation is left-binding, false if right-binding

    • 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).
      Specified by:
      isAssociative in interface InfixOperator
      Returns:
      true, if the operation is associative, false otherwise