org.araneaframework.backend.list.memorybased.expression.logical
Class InExpression

java.lang.Object
  org.araneaframework.backend.list.memorybased.expression.MultiExpression
      org.araneaframework.backend.list.memorybased.expression.logical.InExpression

All Implemented Interfaces:

CompositeExpression, Expression, Serializable

public class InExpression

extends MultiExpression

Provides the IN expression for filtering data in memory-based lists. It verifies that the value of the field is one of provided ones (case-sensitive equal).

Since:

1.1.4

Author:

Allar Tammik

See Also:

Serialized Form

Field Summary

protected Expression

expr1 The field value expression.

Fields inherited from class org.araneaframework.backend.list.memorybased.expression.MultiExpression

children

Constructor Summary

InExpression(Expression expr1, List exprs)

Method Summary

Object	evaluate(VariableResolver resolver) Evaluates by verifying that the field value is one of the values in the array.
Expression[]	getChildren()

Methods inherited from class org.araneaframework.backend.list.memorybased.expression.MultiExpression

add

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

expr1

protected Expression expr1

The field value expression.

Constructor Detail

InExpression

public InExpression(Expression expr1,
                    List exprs)

Method Detail

getChildren

public Expression[] getChildren()

Specified by:

getChildren in interface CompositeExpression

Overrides:

getChildren in class MultiExpression

evaluate

public Object evaluate(VariableResolver resolver)
                throws ExpressionEvaluationException

Evaluates by verifying that the field value is one of the values in the array.

Parameters:

resolver - Resolver that is used to evalute Variables.

Returns:

the value of this Expression.

Throws:

ExpressionEvaluationException - when the evaluating fails.