Package org.forgerock.openig.el

Class LeftValueExpression<T>

java.lang.Object

org.forgerock.openig.el.Expression<T>

org.forgerock.openig.el.LeftValueExpression<T>

Type Parameters:

T - expected result type

public final class LeftValueExpression<T>
extends Expression<T>

A LeftValueExpression is a specialized Expression to which we can assign a value.

Field Summary

Fields inherited from class org.forgerock.openig.el.Expression

valueExpression

Method Summary

Modifier and Type	Method	Description
void	set(Bindings bindings, Object value)	Sets the result of an expression to a specified value.
static <T> LeftValueExpression<T>	valueOf(String expression, Class<T> expectedType)	Factory method to create a LeftValueExpression.

Methods inherited from class org.forgerock.openig.el.Expression

eval, eval, evalAsync, toString, valueOf

Methods inherited from class java.lang.Object

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

Method Detail

valueOf

public static <T> LeftValueExpression<T> valueOf(String expression,
                                                 Class<T> expectedType)
                                          throws ExpressionException

Factory method to create a LeftValueExpression.

Type Parameters:

T - expected result type

Parameters:

expression - The expression to parse.

expectedType - The expected result type of the expression.

Returns:

An expression based on the given string.

Throws:

ExpressionException - if the expression was not syntactically correct or not a left-value expression.

set

public void set(Bindings bindings,
                Object value)

Sets the result of an expression to a specified value. The expression is treated as an lvalue, the expression resolves to an object whose value will be set. If the expression does not resolve to an object or cannot otherwise be written to (e.g. read-only), then this method will have no effect.

Parameters:

bindings - the bindings to evaluate the expression within.

value - the value to set in the result of the expression evaluation.