org.apache.velocity.app.event
Interface ReferenceInsertionEventHandler

All Superinterfaces:

EventHandler

All Known Implementing Classes:

EscapeHtmlReference, EscapeJavaScriptReference, EscapeReference, EscapeSqlReference, EscapeXmlReference

public interface ReferenceInsertionEventHandler
extends EventHandler

Reference 'Stream insertion' event handler. Called with object that will be inserted into stream via value.toString(). Please return an Object that will toString() nicely :)

Version:

$Id: ReferenceInsertionEventHandler.java 470256 2006-11-02 07:20:36Z wglass $

Author:

Will Glass-Husain, Geir Magnusson Jr.

Nested Class Summary

static class

ReferenceInsertionEventHandler.referenceInsertExecutor Defines the execution strategy for referenceInsert

Method Summary

Object

referenceInsert(String reference, Object value) A call-back which is executed during Velocity merge before a reference value is inserted into the output stream.

Method Detail

referenceInsert

Object referenceInsert(String reference,
                       Object value)

A call-back which is executed during Velocity merge before a reference value is inserted into the output stream. All registered ReferenceInsertionEventHandlers are called in sequence. If no ReferenceInsertionEventHandlers are are registered then reference value is inserted into the output stream as is.

Parameters:

reference - Reference from template about to be inserted.

value - Value about to be inserted (after its toString() method is called).

Returns:

Object on which toString() should be called for output.