One-JAR(TM)

Tracker: Patches

5 Patch for External UrlClassLoader - ID: 2833948

Last Update: Comment added ( nobody )

Details:

We have a situation where jars loaded via the external option
(one-jar.class.path) have dependencies on classes contained within the
one-jar itself. For us, this happens when we have things like vendor
implementation JDBC or JMS jars that have to live outside of the one-jar.
This patch allows for the correct resolution of these dependencies while
avoiding infinite loops...

Submitted:

Nobody/Anonymous ( nobody ) - 2009-08-07 22:05

Priority:

Status:

Open

Resolution:

None

Assigned:

Nobody/Anonymous

Category:

None

Group:

None

Visibility:

Public

Comment ( 1 )

Date: 2009-08-07 22:11 Sender: nobody The reason the patch diff is so large is that we indented the code inside the try .. finally block. Our problem: 1. A class is loaded by the externalClassLoader that requires a class available via JarClasspathLoader Solution: * Construct the externalClassLoader so that it's parent is the JarClasspathLoader Causes: * A stack overflow because the JarClasspathLoader will first consult the externalClassLoader to locate the class. Solution: * Track the class name being currently loaded in a ThreadLocal and throw a ClassNotFound exception when we detect a loop. Preferred solution: * Design the JarClasspathLoader around the usage of parent ClasspathLoaders.

Date: 2009-08-07 22:11
Sender: nobody

The reason the patch diff is so large is that we indented the code inside
the try .. finally block.

Our problem:
1. A class is loaded by the externalClassLoader that requires a class
available via JarClasspathLoader

Solution:
* Construct the externalClassLoader so that it's parent is the
JarClasspathLoader

Causes:
* A stack overflow because the JarClasspathLoader will first consult the
externalClassLoader to locate the class.

Solution:
* Track the class name being currently loaded in a ThreadLocal and throw a
ClassNotFound exception when we detect a loop.

Preferred solution:
* Design the JarClasspathLoader around the usage of parent
ClasspathLoaders.

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Attached File ( 1 )

Filename	Description	Download
external-loop.patch		Download

Change ( 1 )

Field	Old Value	Date	By
File Added	338359: external-loop.patch	2009-08-07 22:05	nobody

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Attached File ( 1 )

Change ( 1 )

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