UrlDefinitionFactory crashs during getDefinitions on multiple requests
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Key: TILES-204
URL: https://issues.apache.org/struts/browse/TILES-204
Project: Tiles
Issue Type: Bug
Components: tiles-core
Affects Versions: 2.0.4
Environment: tomcat 5.5
Reporter: Dirk Alexander Schaefer
Priority: Critical
hello all,
consider the following: tiles is initialized using the
org.apache.tiles.definition.UrlDefinitionsFactory default definitions factory.
now, when a request receives and the tiles container is instructed to render a
specific tiles definition, the following happens (the interessing parts):
1. invoke 'Definition getDefinition(String name, TilesRequestContext
tilesContext)' of UrlDefinitionFactory.
2. from there invoke 'Definitions getDefinitions()' of UrlDefinitionFactory.
3. if the instance attribute 'definitions' is null, from there invoke
'Definitions readDefinitions()' of UrlDefinitionFactory.
within the third call the configuration is actually parsed and the
beans/instances/what ever defined within the configuration file(s) are getting
created.
unfortunatelly the UrlDefinitionFactory does not synchronize the call to the
'Definitions readDefinitions()' method. the result is, if there are multiple
request reaching the servlet container at once and there has no other request
been received so long, we get into classical multithreading problematics where
each thread is bothering the others and the process of creating the definitions
list crashs.
can anyone confirm this?
greez,
dialsc
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