org.kuali.rice.krms.framework.engine.expression
Class FunctionExpression

java.lang.Object
  org.kuali.rice.krms.framework.engine.expression.FunctionExpression

All Implemented Interfaces:

Expression<Object>

public final class FunctionExpression
extends Object
implements Expression<Object>

An implementation of Expression which invokes a Function with the results of the invocation of the given List of Expressions (of the given ExecutionEnvironment).

Author:

Kuali Rice Team (rice.collab@kuali.org)

Constructor Summary

FunctionExpression(Function function, String[] parameterTypes, List<Expression<? extends Object>> parameters, ComparisonOperatorService comparisonOperatorService)
Create a FunctionExpression with the given values.

Method Summary

Object

invoke(ExecutionEnvironment environment) Invoke on the given ExecutionEnvironment.

Methods inherited from class java.lang.Object

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

Constructor Detail

FunctionExpression

public FunctionExpression(Function function,
                          String[] parameterTypes,
                          List<Expression<? extends Object>> parameters,
                          ComparisonOperatorService comparisonOperatorService)

Create a FunctionExpression with the given values.

Parameters:

function - Function to be invoked using the invoked results of the given List of Expressions

parameterTypes - the full class names for the function's parameter types in sequential order

parameters - List of Expressions to be invoked whose results (of the given ExecutionEnvironment)

comparisonOperatorService - -- TODO: will be used to invoke the given Function.

Method Detail

invoke

public Object invoke(ExecutionEnvironment environment)

Description copied from interface: Expression

Invoke on the given ExecutionEnvironment.

Specified by:

invoke in interface Expression<Object>

Parameters:

environment - ExecutionEnvironment to invoke on.

Returns:

T