org.apache.commons.el
Class UnaryOperatorExpression

java.lang.Object
  org.apache.commons.el.Expression
      org.apache.commons.el.UnaryOperatorExpression

public class UnaryOperatorExpression
extends Expression

An expression representing one or more unary operators on a value

Version:

$Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: bayard $

Author:

Nathan Abramson - Art Technology Group, Shawn Bayern

Constructor Summary

UnaryOperatorExpression(UnaryOperator pOperator, List pOperators, Expression pExpression)
Constructor

Method Summary

Expression	bindFunctions(javax.servlet.jsp.el.FunctionMapper functions) Returns an expression with all FunctionInvocations replaced by BoundFunctionInvocations.
Object	evaluate(javax.servlet.jsp.el.VariableResolver pResolver, javax.servlet.jsp.el.FunctionMapper functions) Evaluates to the literal value
Expression	getExpression()
String	getExpressionString() Returns the expression in the expression language syntax
UnaryOperator	getOperator()
List	getOperators()
void	setExpression(Expression pExpression)
void	setOperator(UnaryOperator pOperator)
void	setOperators(List pOperators)

Methods inherited from class java.lang.Object

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

Constructor Detail

UnaryOperatorExpression

public UnaryOperatorExpression(UnaryOperator pOperator,
                               List pOperators,
                               Expression pExpression)

Constructor

Method Detail

getOperator

public UnaryOperator getOperator()

setOperator

public void setOperator(UnaryOperator pOperator)

getOperators

public List getOperators()

setOperators

public void setOperators(List pOperators)

getExpression

public Expression getExpression()

setExpression

public void setExpression(Expression pExpression)

getExpressionString

public String getExpressionString()

Returns the expression in the expression language syntax

Specified by:

getExpressionString in class Expression

evaluate

public Object evaluate(javax.servlet.jsp.el.VariableResolver pResolver,
                       javax.servlet.jsp.el.FunctionMapper functions)
                throws javax.servlet.jsp.el.ELException

Evaluates to the literal value

Specified by:

evaluate in class Expression

Throws:

javax.servlet.jsp.el.ELException

bindFunctions

public Expression bindFunctions(javax.servlet.jsp.el.FunctionMapper functions)
                         throws javax.servlet.jsp.el.ELException

Description copied from class: Expression

Returns an expression with all FunctionInvocations replaced by BoundFunctionInvocations.

Specified by:

bindFunctions in class Expression

Parameters:

functions - the functions to use in this transformation

Returns:

an Expression identical to this expression except with all FunctionInvocations replaced by BoundFunctionInvocations.

Throws:

javax.servlet.jsp.el.ELException - if any of the functions in this Expression are not present in functions