Package org.omnifaces.el

Class ScopedRunner

java.lang.Object

org.omnifaces.el.ScopedRunner

public class ScopedRunner
extends Object

This class helps in letting code run within its own scope. Such scope is defined by specific variables being available to EL within it. The request scope is used to store the variables.

Author:

Arjan Tijms

Constructor Summary

Constructors

Constructor	Description
ScopedRunner(FacesContext context)	Construct a scoped runner.
ScopedRunner(FacesContext context, Map<String,Object> scopedVariables)	Construct a scoped runner.

Method Summary

Modifier and Type	Method	Description
static void	forEach(FacesContext context, String key, Object value, Runnable callback)	Invokes the callback within the scope of the given variable.
void	invoke(Runnable callback)	Invokes the callback within the scope of the variables being given in the constructor.
ScopedRunner	with(String key, Object value)	Adds the given scoped variable to this instance.

Methods inherited from class java.lang.Object

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

Constructor Detail

ScopedRunner

public ScopedRunner(FacesContext context)

Construct a scoped runner.

Parameters:

context - The involved faces context.

ScopedRunner

public ScopedRunner(FacesContext context,
                    Map<String,Object> scopedVariables)

Construct a scoped runner.

Parameters:

context - The involved faces context.

scopedVariables - Initial scoped variables.

Method Detail

with

public ScopedRunner with(String key,
                         Object value)

Adds the given scoped variable to this instance. Can be used in a builder-pattern.

Parameters:

key - the key name of the variable

value - the value of the variable

Returns:

this ScopedRunner, so adding variables and finally calling invoke can be chained.

invoke

public void invoke(Runnable callback)

Invokes the callback within the scope of the variables being given in the constructor.

Parameters:

callback - The callback.

forEach

public static void forEach(FacesContext context,
                           String key,
                           Object value,
                           Runnable callback)

Invokes the callback within the scope of the given variable.

Parameters:

context - The involved faces context.

key - the key name of the variable

value - the value of the variable

callback - The callback.

Since:

3.0