8:21 a.m.
Shahad Ahmed wrote:
Okay, I've figured this out. There is a bug in the Guvnor that
means
it cannot open or perform operations on version 4 ruleflow assets in
an v4 repository that was migrated to version 5 by the Guvnor. I've
raised this as a JIRA JBRULES-1945 and attached a patch to the JIRA.
The patch also allows you to open, view and edit version 4 .rf
(graphical) ruleflow files using the V5 Eclipse plugin, and also open
v4 .rfm assets in the Guvnor. One of the classes in the patch
(RuleFlowMigrator) can also be used as a command line application to
migrate version 4 .rf files to version 5 if required.
I know kris added a patch to
load v4 rulelfows, but I guess guvnor isn't
aware of the properties switch that needs to be applied. We'll review
your patch asap.
Thanks
Mark
Regards
Shahad
On Mon, Jan 12, 2009 at 11:10 AM, Shahad Ahmed
<shahad.ahmed2(a)gmail.com <mailto:shahad.ahmed2@gmail.com>> wrote:
Does anyone know if there is a way of specifying that the Guvnor
5.0M4 should migrate ruleflows from version 4.0 to 5.0 when
importing a version 4.0 repository into the Guvnor, or is this
bug/oversight in the Guvnor?
I'm trying to import a drools 4.0.7 repository into Guvnor 5.0M4 –
the repository was originally exported out of a drools 4.0.7 BRMS
(i.e. in XML format). However, when I try and build a package
containing a ruleflow in the imported repository it fails, but the
same repository builds under the drools 4.0.7 BRMS. Packages
without ruleflows build okay, so it looks as if the failure has to
do with the ruleflows in packages.
I know that drools 4 ruleflows are not compatible with drools 5
ruleflows, and that there's a drools property that allows the
compiler to automatically migrate ruleflows from 4.0 to 5.0. I had
assumed the Guvnor applies this migration as I see the following
in the log when I import the repository, but a quick look at code
in the drools trunk suggests that this migration simply changes
version numbers in the repository, but does not migrate the ruleflows:
17:27:59,931 INFO [STDOUT] AUTO MIGRATION: Performing
drools.package migration.
17:28:00,369 INFO [STDOUT] AUTO MIGRATION: drools.package
migration completed.
The reason I suspect it's something to do with ruleflows is that
when I try and do anything with the ruleflow assets in the Guvnor,
I see the following error:
17:30:40,634 INFO [STDOUT] (null: 1, 59): cvc-elt.1: Cannot find
the declaratio
n of element 'org.drools.ruleflow.core.impl.RuleFlowProcessImpl'.
When I try and build a package with a ruleflow I see the following
error in the log:
Caused by: java.lang.NullPointerException
at
org.drools.compiler.ProcessBuilder.buildProcess(ProcessBuilder.java:9
9)
at
org.drools.compiler.ProcessBuilder.addProcessFromFile(ProcessBuilder.
java:228)
at
org.drools.compiler.PackageBuilder.addProcessFromXml(PackageBuilder.j
ava:435)
at
org.drools.compiler.PackageBuilder.addRuleFlow(PackageBuilder.java:40
7)
at
org.drools.guvnor.server.contenthandler.RuleFlowHandler.compile(RuleF
lowHandler.java:108)
at
org.drools.guvnor.server.builder.ContentPackageAssembler.buildAsset(C
ontentPackageAssembler.java:167)
at
org.drools.guvnor.server.builder.ContentPackageAssembler.buildPackage
(ContentPackageAssembler.java:154)
at
org.drools.guvnor.server.builder.ContentPackageAssembler.<init>(Conte
ntPackageAssembler.java:103)
at
org.drools.guvnor.server.builder.ContentPackageAssembler.<init>(Conte
ntPackageAssembler.java:116)
at
org.drools.guvnor.server.ServiceImplementation.buildPackage(ServiceIm
plementation.java:1370)
at
org.drools.guvnor.server.ServiceImplementation.buildPackage(ServiceIm
plementation.java:1354)
Regards
Shahad
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