Package 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	Description
static Promise<Object,NeverThrowsException>	evaluateAsync(Object value, Bindings bindings)	Evaluate an Object that may contain some expressions that needs to be evaluated.
static Promise<List<Object>,NeverThrowsException>	evaluateAsync(List<Object> list, Bindings bindings)	Evaluate a list that may contain some Expressions that needs to be evaluated.
static Promise<Map<String,Object>,NeverThrowsException>	evaluateAsync(Map<String,Object> map, Bindings bindings)	Evaluate a map that may contain some expressions that needs to be evaluated.
static Object	from(Object value)	Compile to expression an Object that may contain some String that needs to be evaluated.
static Expression<Object>	from(String value)	Convert a String to a compiled expression.
static List<Object>	from(List<Object> list)	Compile as expressions what can be compiled in a list.
static Map<String,Object>	from(Map<String,Object> map)	Compile a map that may contain some values that needs to be transformed as expression.

Methods inherited from class java.lang.Object

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

Method Detail

evaluateAsync

public static Promise<Map<String,Object>,NeverThrowsException> evaluateAsync(Map<String,Object> map,
                                                                                         Bindings bindings)

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

Parameters:

map - the map to evaluate

bindings - the bindings used for the evaluation

Returns:

a promise of a new Map containing the result of the evaluation.

evaluateAsync

public static Promise<List<Object>,NeverThrowsException> evaluateAsync(List<Object> list,
                                                                             Bindings bindings)

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

Parameters:

list - the list to evaluate

bindings - the bindings used for the evaluation

Returns:

a promise of a new list containing the results of the evaluations

evaluateAsync

public static Promise<Object,NeverThrowsException> evaluateAsync(Object value,
                                                                       Bindings bindings)

Evaluate an Object that may contain some expressions 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.

from

public static Map<String,Object> from(Map<String,Object> map)
                                     throws ExpressionException

Compile a map that may contain some values that needs to be transformed as expression.

Parameters:

map - the map containing potential expressions

Returns:

a new Map containing expressions when possible.

Throws:

ExpressionException - if an error occurs while compiling the expression

from

public static List<Object> from(List<Object> list)
                         throws ExpressionException

Compile as expressions what can be compiled in a list.

Parameters:

list - the list to convert to expressions

Returns:

a promise of a new list containing the results of the evaluations

Throws:

ExpressionException - if an error occurs while evaluating the expression

from

public static Expression<Object> from(String value)
                               throws ExpressionException

Convert a String to a compiled expression.

Parameters:

value - the String to compile as expression

Returns:

the corresponding compiled expression

Throws:

ExpressionException - if an error occurs while compiling the expression

from

public static Object from(Object value)
                   throws ExpressionException

Compile to expression 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 Object to compile to expression

Returns:

the result of the compilation. Or the object itself if it has an unsupported type

Throws:

ExpressionException - if an error occurs while evaluating the expression