It would not be called on $testing, because $testing is not being
inserted into the output. And it is not called on the variables
within the loop, because in this example testing appears to be
null/empty, so there is no attempt to render the body of the #foreach.
On Fri, Mar 30, 2012 at 6:45 AM, Jean-Francois Croteau <jfcrot...@8d.com> wrote:
> Hi everyone,
> quick question about the ReferenceInsertionEventHandler: is it supposed to
> be called on a variable called into a #foreach loop (or even on the variable
> defining the foreach loop)?
>
> For example:
>
> public class IsThisAVelocityBug {
>
> public static void main( String[] args ) {
> String template1 = "${otherVariable}\n";
> String template2 = "#foreach($test in
> $testing)\n${test.something}\n${otherVariable}\n#end";
>
> VelocityEngine veloctiyEngine = new VelocityEngine();
>
> VelocityContext velocityContext = new VelocityContext();
> EventCartridge eventCartridge = new EventCartridge();
> velocityContext.attachEventCartridge( eventCartridge );
>
> eventCartridge.addReferenceInsertionEventHandler( new ReferenceInsertionEventHandler()
> {
>
> @Override
> public Object referenceInsert( String reference, Object value ) {
> System.out.println( "Inserting : " + reference );
> return reference;
> }
> } );
>
> System.out.println( "template1" );
> veloctiyEngine.evaluate( velocityContext, new StringWriter(), "template1",
> template1 );
> System.out.println( "template2" );
> veloctiyEngine.evaluate( velocityContext, new StringWriter(), "template2",
> template2 );
> }
> }
>
> Here is the output:
>
> template1
> 09:43:39.568 [main] DEBUG org.apache.velocity - CommonsLogLogChute name is
> 'org.apache.velocity'
> 09:43:39.579 [main] DEBUG org.apache.velocity - Initializing Velocity,
> Calling init()...
> 09:43:39.579 [main] DEBUG org.apache.velocity - Starting Apache Velocity
> v1.7 (compiled: 2010-11-19 12:14:37)
> 09:43:39.580 [main] DEBUG org.apache.velocity - Default Properties File:
> org/apache/velocity/runtime/defaults/velocity.properties
> 09:43:39.580 [main] DEBUG org.apache.velocity - Trying to use logger class
> org.apache.velocity.runtime.log.AvalonLogChute
> 09:43:39.580 [main] DEBUG org.apache.velocity - Target log system for
> org.apache.velocity.runtime.log.AvalonLogChute is not available
> (java.lang.NoClassDefFoundError: org/apache/log/format/Formatter). Falling
> back to next log system...
> 09:43:39.581 [main] DEBUG org.apache.velocity - Trying to use logger class
> org.apache.velocity.runtime.log.Log4JLogChute
> 09:43:39.581 [main] DEBUG org.apache.velocity - Target log system for
> org.apache.velocity.runtime.log.Log4JLogChute is not available
> (java.lang.NoClassDefFoundError: org/apache/log4j/Layout). Falling back to
> next log system...
> 09:43:39.581 [main] DEBUG org.apache.velocity - Trying to use logger class
> org.apache.velocity.runtime.log.CommonsLogLogChute
> 09:43:39.582 [main] DEBUG org.apache.velocity - Using logger class
> org.apache.velocity.runtime.log.CommonsLogLogChute
> 09:43:39.606 [main] DEBUG org.apache.velocity - ResourceLoader instantiated:
> org.apache.velocity.runtime.resource.loader.FileResourceLoader
> 09:43:39.610 [main] DEBUG org.apache.velocity - Do unicode file
> recognition: false
> 09:43:39.611 [main] DEBUG org.apache.velocity - FileResourceLoader : adding
> path '.'
> 09:43:39.724 [main] DEBUG org.apache.velocity - ResourceCache: initialized
> (class org.apache.velocity.runtime.resource.ResourceCacheImpl) with class
> java.util.Collections$SynchronizedMap cache map.
> 09:43:39.728 [main] DEBUG org.apache.velocity - Loaded System Directive:
> org.apache.velocity.runtime.directive.Stop
> 09:43:39.732 [main] DEBUG org.apache.velocity - Loaded System Directive:
> org.apache.velocity.runtime.directive.Define
> 09:43:39.733 [main] DEBUG org.apache.velocity - Loaded System Directive:
> org.apache.velocity.runtime.directive.Break
> 09:43:39.735 [main] DEBUG org.apache.velocity - Loaded System Directive:
> org.apache.velocity.runtime.directive.Evaluate
> 09:43:39.737 [main] DEBUG org.apache.velocity - Loaded System Directive:
> org.apache.velocity.runtime.directive.Literal
> 09:43:39.745 [main] DEBUG org.apache.velocity - Loaded System Directive:
> org.apache.velocity.runtime.directive.Macro
> 09:43:39.759 [main] DEBUG org.apache.velocity - Loaded System Directive:
> org.apache.velocity.runtime.directive.Parse
> 09:43:39.764 [main] DEBUG org.apache.velocity - Loaded System Directive:
> org.apache.velocity.runtime.directive.Include
> 09:43:39.769 [main] DEBUG org.apache.velocity - Loaded System Directive:
> org.apache.velocity.runtime.directive.Foreach
> 09:43:40.229 [main] DEBUG org.apache.velocity - Created '20' parsers.
> 09:43:40.260 [main] DEBUG org.apache.velocity - Velocimacro :
> "velocimacro.library" is not set. Trying default library:
> VM_global_library.vm
> 09:43:40.260 [main] DEBUG org.apache.velocity - Velocimacro : Default
> library not found.
> 09:43:40.260 [main] DEBUG org.apache.velocity - Velocimacro : allowInline =
> true : VMs can be defined inline in templates
> 09:43:40.260 [main] DEBUG org.apache.velocity - Velocimacro :
> allowInlineToOverride = false : VMs defined inline may NOT replace previous
> VM definitions
> 09:43:40.261 [main] DEBUG org.apache.velocity - Velocimacro :
> allowInlineLocal = false : VMs defined inline will be global in scope if
> allowed.
> 09:43:40.261 [main] DEBUG org.apache.velocity - Velocimacro : autoload off :
> VM system will not automatically reload global library macros
> Inserting : ${otherVariable}
> template2
>
>
> Why is it never called on any inserted variable in the template2?
>
> Jean-Francois Croteau
> jfcrot...@8d.com
> Développeur Java
>
> 8D Technologies Inc.
> 416, de Maisonneuve Ouest, suite 406
> Montréal, Québec, Canada, H3A 1L2
> Tél: 514-906-1212 Poste 339
> Fax: 514-906-1214
> http://www.8D.com/
>
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