org.forgerock.openig.el

Class Expressions

java.lang.Object

org.forgerock.openig.el.Expressions

public final class Expressions
extends Object

Utility class for evaluating expression in some collections.

Method Summary

Modifier and Type	Method and Description
static List<Object>	evaluate(List<Object> list, Bindings bindings) Evaluate a list that may contain some String that needs to be evaluated.
static Map<String,Object>	evaluate(Map<String,Object> map, Bindings bindings) Evaluate a map that may contain some values that needs to be evaluated.
static Object	evaluate(Object value, Bindings bindings) Evaluate an Object that may contain some String that needs to be evaluated.
static Object	evaluate(String value, Bindings bindings) Evaluate a String.
static String	evaluateKey(String key, Bindings bindings) Evaluate a String.

Methods inherited from class java.lang.Object

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

Method Detail

evaluate

public static Map<String,Object> evaluate(Map<String,Object> map,
                                          Bindings bindings)
                                   throws ExpressionException

Evaluate a map that may contain some values that needs to be evaluated.

Parameters:

map - the map to evaluate

bindings - the bindings used for the evaluation

Returns:

a new Map containing the result of the evaluation.

Throws:

ExpressionException - if an error occurs while evaluating the expression

evaluate

public static List<Object> evaluate(List<Object> list,
                                    Bindings bindings)
                             throws ExpressionException

Evaluate a list that may contain some String that needs to be evaluated.

Parameters:

list - the list to evaluate

bindings - the bindings used for the evaluation

Returns:

a new list containing the results of the evaluations

Throws:

ExpressionException - if an error occurs while evaluating the expression

evaluate

public static Object evaluate(String value,
                              Bindings bindings)
                       throws ExpressionException

Evaluate a String.

Parameters:

value - the String to evaluate

bindings - the bindings used for the evaluation

Returns:

the result of the evaluation.

Throws:

ExpressionException - if an error occurs while evaluating the expression

evaluateKey

public static String evaluateKey(String key,
                                 Bindings bindings)

Evaluate a String. The original key value is returned if an ExpressionException is thrown while evaluating the key value, used for configurations where the key can also be an expression.

Parameters:

key - the String to evaluate.

bindings - the bindings used for the evaluation.

Returns:

the result of the evaluation or the original value if there was a ExpressionException during evaluation.

evaluate

public static Object evaluate(Object value,
                              Bindings bindings)
                       throws ExpressionException

Evaluate an Object that may contain some String that needs to be evaluated. The supported types of Object are : String, List and Map.

Parameters:

value - the String to evaluate

bindings - the bindings used for the evaluation

Returns:

the result of the evaluation.

Throws:

ExpressionException - if an error occurs while evaluating the expression