Cannot run multiple executions and have custom tool
---------------------------------------------------
Key: MHIBERNATE-63
URL: http://jira.codehaus.org/browse/MHIBERNATE-63
Project: Maven 2.x Hibernate Plugin
Issue Type: Bug
Affects Versions: 2.0-alpha-2
Reporter: James Olsen
Assignee: Johann Reyes
If the plugin is configured to have multiple executions you cannot use a
hibernate toolclass such as:
<hibernatetool.reveng.toolclass>
com.xxx.hibernate.tools.reveng.ReverseEngineeringTool
</hibernatetool.reveng.toolclass>
The second execution will fail with an error as shown below. This seems to be
a ClassLoader issue. I think FreeMarker is using a static/singleton cache of
method information and is loaded with the plugin ClassLoader. The tool however
is loaded via a different ClassLoader managed by the plugin. During the second
execution FreeMarker determines that the tool class has been reloaded via a
different ClassLoader and therefore it's cached copy of method info for the
tool could be wrong so it clears it's caches - unfortunately it clears all of
it's cached info! It is then unable to find method info for anything.
I've tried placing the tool class in a separate jar in the plugin's extensions
but the plugin doesn't look in that ClassLoader when trying to load tools.
11:17:53,090 INFO freemarker.beans - Detected a reloaded class
[com.xxx.hibernate.tools.reveng.ReverseEngineeringTool]. Clearing BeansWrapper
caches.
11:17:53,090 ERROR freemarker.runtime - get(getMetaAttribAsBool) failed on
instance of org.hibernate.tool.hbm2x.pojo.EntityPOJOClass
The problematic instruction:
----------
==> if pojo.getMetaAttribAsBool(property, "gen-property", true) [on line 3,
column 1 in src/main/resources/pojo-query-keys/PojoPropertyAccessors.ftl]
in include "PojoPropertyAccessors.ftl" [on line 4, column 1 in
src/main/resources/pojo-query-keys/Pojo.ftl]
----------
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