org.seedstack.seed.el.api

Interface ELService

public interface ELService

The ELService provides a DSL to facilitate the evaluation of expression language.

Author:

pierre.thirouin@ext.mpsa.com

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	ELService.ELContextProvider This interface provides methods to add ELContext for EL evaluation.
static interface	ELService.ELExpressionProvider This interface provides methods to add properties for the EL evaluation.
static interface	ELService.MethodExpressionProvider This interface provides methods to evaluate a method expression.
static interface	ELService.ValueExpressionProvider This interface provides methods to evaluate a value expression.

Method Summary

Methods

Modifier and Type	Method and Description
ELService.ELContextProvider	withExpression(String el, Class returnType) Sets the expression language to evaluate and specifies the expected return type.
ELService.MethodExpressionProvider	withMethodExpression(javax.el.MethodExpression methodExpression) Sets a MethodExpression to invoke.
ELService.ValueExpressionProvider	withValueExpression(javax.el.ValueExpression valueExpression) Sets a ValueExpression to evaluate.

Method Detail

withExpression

ELService.ELContextProvider withExpression(String el,
                                         Class returnType)

Sets the expression language to evaluate and specifies the expected return type.

Parameters:

el - the expression language to evaluate

returnType - the expected return type

Returns:

an ELContextProvider

Throws:

org.seedstack.seed.core.api.SeedException - if el is blank or returnType is null

withValueExpression

ELService.ValueExpressionProvider withValueExpression(javax.el.ValueExpression valueExpression)

Sets a ValueExpression to evaluate.

Parameters:

valueExpression - the value expression to set

Returns:

ValueExpressionProvider

Throws:

org.seedstack.seed.core.api.SeedException - if the valueExpression is null

withMethodExpression

ELService.MethodExpressionProvider withMethodExpression(javax.el.MethodExpression methodExpression)

Sets a MethodExpression to invoke.

Parameters:

methodExpression - the method expression to set

Returns:

MethodExpressionProvider

Throws:

org.seedstack.seed.core.api.SeedException - if the methodExpression is null