org.apache.velocity.app.event

Interface NullSetEventHandler

All Superinterfaces:

EventHandler

public interface NullSetEventHandler
extends EventHandler

Event handler called when the RHS of #set is null. Lets an app approve / veto writing a log message based on the specific reference.

Version:

$Id: NullSetEventHandler.java 685685 2008-08-13 21:43:27Z nbubna $

Author:

Will Glass-Husain, Geir Magnusson Jr.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	NullSetEventHandler.ShouldLogOnNullSetExecutor Defines the execution strategy for shouldLogOnNullSet

Method Summary

Methods

Modifier and Type	Method and Description
boolean	shouldLogOnNullSet(java.lang.String lhs, java.lang.String rhs) Called when the RHS of a #set() is null, which will result in a null LHS.

Method Detail

shouldLogOnNullSet

boolean shouldLogOnNullSet(java.lang.String lhs,
                         java.lang.String rhs)

Called when the RHS of a #set() is null, which will result in a null LHS. All NullSetEventHandlers are called in sequence until a false is returned. If no NullSetEventHandler is registered all nulls will be logged.

Parameters:

lhs - reference literal of left-hand-side of set statement

rhs - reference literal of right-hand-side of set statement

Returns:

true if log message should be written, false otherwise