I've been trying to run Guvnor on WebSphere at an IBM shop. I'm using Guvnor
5.3GA for help under our support contract with RedHat. In previous posts,
people have recommended to get Guvnor to work, nearly unmodified, under
WebSphere by disabling servlets, getting particular versions of the softwar
5.3 worked much better, without authentication. I even was able to import my
5.5 repository, albeit with some issues.
Oddly, writing the PKG throws an exception. I have written the code to
export a PKG before, but I wonder if this is related to the permission under
the WebSphere directory? Some
Thanks. With 5.5. and your components.xml I get:
Trying 5.3 :) Thanks for your help!
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Sure! I believe this is the all from the exploded 5.5 Guvnor war:
guvnor\WEB-INF\lib\seam-security-3.1.0.Final.jar
guvnor\WEB-INF\lib\seam-security-api-3.1.0.Final.jar
and the /WEB-INF/beans.xml:
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When I try using 5.2 (NOT 5.2.1, which will be next) I get a logon dialog box
for username/password that (per the docs) seems like it should accept
anything - but no user/password combination seems to work out of box.
Please note that I haven't tried to configure security for 5.2, expecting
none.
Thanks. I've tried a number of different approaches and checked your post
out before. I appreciate the tip about decompressing. With your approach, I
get:
Exception thrown by application class
'com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensionProcessor.findWrapper():476'
JSPG0036E: Failed t
I've been using DROOLS and Guvnor for years, but am trying to get Guvnor to
run under WebSphere 8.5 - even under the Liberty profile as mentioned.
Guvnor fails using the tomcat war (contrary to post) and avoiding "seam"
(per another post) gets you to run-time complaints about
- needing the weld-
Thanks. I think this is actualy a bug in 5.3. I wonder if there is an issue
with the mvel getting unsynchronized as files get larger?
The # should indicate a comment and > should indicate something passed thru
to DROOLS directly. So almost the entire rule is commented out. I am
particuarly puz
This is an odd one. I was testing some DSL and have been tracing back an
error in the translation. The line marked in the code below, even as a
comment, causes multiple "cannot be resolved" errors when moved. Any
thoughts on what could cause this other than a bug?
Note that almsot all of the co
Thanks. I downloaded 5.2 and there are no compilation errors. I also need
to check to see if one decision table issue (that I had worked around) was
solved. However, in 5.2 I get
'org.drools.rule.builder.dialect.java.JavaDialectConfiguration:java:org.drools.rule.builder.dialect.java.JavaDialec
I have solved this problem before, and think it is a JAR issue, but can't
seem to remember which JAR solves my problem. The DSL sentence
[consequence][]Set {field} of {object} to
{value}={object}.set{field!ucfirst}({value});
is not working since !ucfirst is being ignored. I am using 5.1.1 bec
It is better if I type them here
NAME
Rulename
"DT Fare Itinerary Compute Discount 1"
"DT Fare Itinerary Compute Discount 2"
"DT Fare Itinerary Compute Discount 3"
"DT Fare Itinerary Compute Discount 4"
DT-Fare-Itinerary-Compute-Discount5
I tried with and without quotes. The suffixed RuleTable
I am running decision tables implemented in Excel and the values in the NAME
column are being ignored in favor of the RuleTable (appended with an int).
Am I missing something trivial or is this a bug in DROOLS 5.4? I have
attached the screen capture (it is small) but scrunch the non-relevant part
I can't seem to find this on the site and know I have done it - how do you
wrap a node name in a ruleflow or BPMN graph so it displays on multiple
lines?
I would like "This is a really long process name that I would like to be be
wrapped on multiple lines"
to appear as
This is a really long
pro
Trying a fresh install:
Download JBoss 7.1 (Thunder)
Unzip into new directory
Edit JBOSS_HOME
Copy guvnor-5.3.0.Final-jboss-as-6.0.war to standalone deployment directory
and rename as guvnor53.war
Set up the classpath to include the DROOLS JARs
Startup JBoss standalone, causing
13:34:11,598 WARN
I am moving some working Eclipse-developed code to Guvnor and am seeing a
huge number of messages logged for jackrabbit "session that has already been
closed". This happens nearly continuously, with the session number
ascending:
11:18:01,889 WARN [org.apache.jackrabbit.core.session.SessionState]
Thanks. That part I found and solved already from another post. However,
the ruleflow still stops in the first ruletask. Any thoughts? I am
basically recoding KnowledgeAgents to get the functionality.
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I have a working prototype that is being converted from programmatic loading
to the change-set/knowledge agent paradigm. I am experiencing several
problems that are shown in this minimal version.
First, like in many posts the XSD for change-set is not found; where is the
actual XSD? This issue d
I am also seeing an "unexpected global" in working code when built in the
"buidling using code" paradigm when moved to use changesets and
knowledgeagents. I also see this problem reported on another, non-Drools
site.
My global is a simple java.util.ArrayList and I can see it in the
debugger i
Many of the systems use large amounts of data or large numbers of rules by
applying indices inside rules or by processing transactions that could be
batched - which really increases the number of rules or that that are seen.
One of my customers used indices in rules creating rulesets of ~ 200,000
I've built rules using DSL's before and with 5.3 I am seeing Eclipse hang
intermitently during builds. I've seen this in previous versions of DROOLS
so wondered what/where is the most stable version of DROOLS? I downloaded,
but have not yet installed the product version (this is for a lartge US
f
Your issue looks like a persistence issue, not a DROOLS issue. If you do
more metering and experimentation people may be able to solve this for you.
You may want to check posts from about a year ago; there were MANY people
asking about JPA workflow persistence.
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There are many ways of doing unit testing in DROOLS - with or without
Eclipse. My last client is using JUnits with the Eclipse JUnit plug-in
where the tests examine the firing of individual rules and the values set on
domain objects. One advantage of this approach is that you can run any
number o
Creating an AgendaFilter in stateful sessions is straightforward. Although
there are many API's that seem like they would foster discarding /filtering
rule activations in stateless sessions, each family of API seems to be
missing a key method to filter activations.
Can anyone suggest a way that w
I have run several times this number of rules with Drools. Mark is right
that adding Permgen space will help, but you can also reduce the size of
your identifiers to use less Permgen memory.
The harder issue to handle is running out of heap memory if you run a few
thousand more rules: at some
A common issue that I am looking into is setting the execution date to test
future or legacy rules (i.e., with dates that are not the system date.) A
number of users have posted about TimeMachine, TimeServices and the perils
of setting the system date - but a JIRA lists TimeMachine as being remove
I noticed your queries in my emails and, having written a large amount of DSL
thought I would chime in.
In translating from attributes to getters and setters Drools has several !
functions that are useful, such as !first. With appropriate naming of
attributes, you can flawlessly convert from attr
Your approach overall may also be a mistake. I've built DROOLS systems
looking at things like codes for thousands of entries. If you have a
problem with thousands of rules that examine codes your JVM will run out of
memory.
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I believe it does but note that moving data back and forth between Guvnor and
Eclipse is not quite seemless because Guvnor attaches metadata.
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Sen
Is the reply correct? There are obvious mechanisms to create metadata on the
object model in Drools and while there are data structures in the rules to
store metadata setting user-defined metadata on rules does not seem to have
supporting predicates. I would be interested in seeing a rule metada
It is very helpful for us if you would include the generated DRL in your
responses. You only need to show one misgenerated rule for us to help.
I am working on a large application that is almost entirely DSL/DSRL so
could help you debug a few rules to help you get on the right path.
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I have a stateless session with a large number of rules most of which set
values used elsewhere in the application so looping is a big issue. The
rules have been organized into a ruleflows in order to foster orchestration.
As a very clean approach to avoid looping (i.e., avoiding adding control t
As an update, I am testing getting this functionality by having two
KnowledgeBuilder that both add to the same KnowledgeBase and to a single
StatefulKnowledgeSession. So far so good.
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Several posts refer to a pre-5.0 addpackagefromdrl method that builds a rule
file for an associated DSL file. This let multiple DRL files be associated
to a specific DSL file for compilation.
KnowledgeBuilder.add(...) lets you add multiple DRL and DSL files, but it
seems as if the "expander" keyw
Tried to edit and delete the post. It turns out that this error message is
being used for a wide-range of errors unrelated to typing! It is as if it
were the default exception handler for numerous mvel issues!
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A common problem in using Drools DSL is MVEL's "Unable to build
expression.unqualified type in strict mode" Many posts mention
error, I have looked at drools-compiler.jar, drools-core.jar, drools-api.jar
but I haven't found a real solution to the problem yet, i.e., a way to
unset strict m
I apologize if this is covered elsewhere, but I am not sure of the keywords
to search that would not return 1000 posts.
I have ruleflow running from a rule that starts it in a
StatelessKnowledgeSession. I am doing this to avoid inferencing, which is
present in the stateful version of this applica
I tried to submit this to https://issues.jboss.org/secure/, but my password
reset, while successful doesn't let me in to submit a JIRA.
On the stable (M1?) version of 5.2 I encounter the following exception.
- Create a BPMN2 diagram with a nest subprocess that has a rule task with
ruleflow-grou
I have posted a few times about domain specific languages and have a few
issues for users and
dev that seem of widespread interest.
1. The 5.2 document has less than one sentence on "hints for the gui
editor." Could someone describe what these hints are and their syntax
(i.e., {::}? Or to tie in
Sorry to not include this earlier, but the exeption (where I am developing on
another machine) disappeared before. It is exactly:
DSL Rule Translation Error!
Reason:
java.lang.ArrayIndexOutOfBoundsException: 16
and my .dslr file has exactlly 16 lines.
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I have some more incite into what might be causing the problem. Once I
remove the drools.package file - which shouldn't be needed since the imports
and expander are in the .dslr file - and have a trivial example - I can see
an "DSL Rule Translation: Array out of bounds" exception generated in
Ecli
Trying to bind a variable on the left hand side is a specific example that
causes no error to be reported but no DRL to be generated. I can do the
binding if I have one re-writing statement per possibility,
i.e.,
There is a first object = object_1 : Car()
but not if I generalize it:
There is
I have run into a number of problems using a domain specific language (DSL)
on processing DSLR files. My biggest frustration - and one I am hoping
people can provide a work-around or guidance on - is that often the Eclipse
plug-in does not allow the DRL pane, showing the DRL file, to be clicked on
Take a look at the documentation of the "from" keyword
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I've noticed that the LHS of the Eclipse Guided Rule Editor can employ DSL
sentences or an object model, but there doesn't seem to be a manner to
incorporate the DSL on the RHS of rules (other in "free form" code)
Is that by design? Or is there some property that can enable the dialog
box/drop-do
I am seeing this behavior in 5.1.1 - it is as if the context sensitivity is
far to "greedy" for replacement.
Since this may not have been clearly understood from the original posting,
if I have
There is an {Instance} with field of "{value}"
and my cursor is at the end of the line and I select
In experimenting with my own "Guided editor" files I am trying both the
"Fact" and "Condition sentences" to use the Guided editor in Eclipse without
typing any DRL or Java by prospective business users. I have a Java project
with classes that are imported by a rule project with drools.package (and
I had several Eclipse projects with customized WorkItem's in 5.1. The latest
download of the source code seems to have been reorganized: I see
drools.rulebase.conf files that seem unrelated to drools.workDefinitions and
all the versions that look like what I would expect are in the example files
I've been working on a proof-of-concept where microseconds count and I need
more performance than JPAKnowledgeService's hibernate/jpa/jta stack can
provide. I can use process event listener's to get the processId, nodeId,
sessionId to persist the state of a rule flow but can't find an API that
wo
I believe I tried this and having multiple package statements - even for the
same package - in a file generates a different error.
However, the example does list the package as optional - which if it were
would also work. Thanks!
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I am trying to incorporate several templates in a single output drl file.
According to the 5.0.1 docs "package" is optional:
Example 5.3. Rule template file: templates
template header
parameter-name-1
...
parameter-name-n
package ... # optional
However, it seems that the drools parser uses "pac
Hi! I've created a custom WorkItemHandler that seems to work until it is used
in another Java function with other WorkItemManager's and Handler's (the
default ones, email and log.) No exception is caught by a try-catch block
with this function call, but single stepping through the code that runs
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