Displaying BPM node names across lines (easy)
by drdaveg
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
process name that
I would like to be be
wrapped on multiple lines
via adding in special characters to the process name. Thanks!
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14 years, 1 month
Guvnor REST API and XLS decision tables
by anchi
Hi!
I'm wondering how does Guvnor REST api handle Excel decision tables? I'm
using 5.3.1.Final version.
It seems that when I use url for binary e.g.
/http://{guvnor_url}/rest/packages/package_name/assets/excel_table_name/binary/
, I get a source (.xls) file.
And when I use source url e.g.
/http://{guvnor_url}/rest/packages/package_name/assets/excel_table_name/source/
, I get a binary file.
Is this some bug or is it really expected to work this way?
Also, when I try to build binary file (which I get using source url:) )
using knowledge builder I'm getting exceptions, I have tried it in two ways:
1. kbuilder.add(urlResource, ResourceType.DTABLE);
Exception in thread "main"
org.drools.template.parser.DecisionTableParseException: An error occurred
opening the workbook. It is possible that the encoding of the document did
not match the encoding of the reader.
at
org.drools.decisiontable.parser.xls.ExcelParser.parseFile(ExcelParser.java:90)
at
org.drools.decisiontable.SpreadsheetCompiler.compile(SpreadsheetCompiler.java:89)
at
org.drools.decisiontable.SpreadsheetCompiler.compile(SpreadsheetCompiler.java:68)
at
org.drools.decisiontable.DecisionTableProviderImpl.compileStream(DecisionTableProviderImpl.java:38)
at
org.drools.decisiontable.DecisionTableProviderImpl.loadFromInputStream(DecisionTableProviderImpl.java:21)
at
org.drools.compiler.DecisionTableFactory.loadFromInputStream(DecisionTableFactory.java:18)
at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:613)
at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:37)
at Main.main(Main.java:101)
Caused by: jxl.read.biff.BiffException: Unable to recognize OLE stream
at jxl.read.biff.CompoundFile.<init>(CompoundFile.java:116)
at jxl.read.biff.File.<init>(File.java:127)
at jxl.Workbook.getWorkbook(Workbook.java:268)
at
org.drools.decisiontable.parser.xls.ExcelParser.parseFile(ExcelParser.java:75)
... 8 more
2. kbuilder.add(urlResource, ResourceType.DRL);
java.lang.IndexOutOfBoundsException: Index: 693, Size: 693
at java.util.ArrayList.get(ArrayList.java:352)
at org.antlr.runtime.CommonTokenStream.LT(CommonTokenStream.java:103)
at org.drools.lang.ParserHelper.reportError(ParserHelper.java:386)
at org.drools.lang.DRLParser.compilationUnit(DRLParser.java:182)
at org.drools.compiler.DrlParser.compile(DrlParser.java:225)
at org.drools.compiler.DrlParser.parse(DrlParser.java:136)
at org.drools.compiler.DrlParser.parse(DrlParser.java:141)
at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:394)
at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:586)
at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:37)
at Main.main(Main.java:101)
Exception in thread "main" java.lang.RuntimeException:
org.drools.compiler.DroolsParserException: Unexpected exception raised while
parsing. This is a bug. Please contact the Development team :
Index: 693, Size: 693
at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:692)
at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:37)
at Main.main(Main.java:101)
Caused by: org.drools.compiler.DroolsParserException: Unexpected exception
raised while parsing. This is a bug. Please contact the Development team :
Index: 693, Size: 693
at org.drools.compiler.DrlParser.compile(DrlParser.java:242)
at org.drools.compiler.DrlParser.parse(DrlParser.java:136)
at org.drools.compiler.DrlParser.parse(DrlParser.java:141)
at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:394)
at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:586)
... 2 more
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14 years, 1 month
[designer] problem with color theme selection
by Cristiano Gavião
I'm using Guvnor 4.3.Final with Designer 2.2.Final.
I have to say that Designer is getting amazing each version.
Congratulations and thanks the team for that !!!
But I didn't like the default color because I can't read well the black
text in a dark gray background color.
So when I try to test the color theme and select the jBPM theme button I
got this message: " invalid color theme data".
what this mean ?
How can I create my own color theme ?
regards,
Cristiano
14 years, 1 month
use of enum with "in" on LHS
by dsykes
Hi there,
I have a rule where I would like human-readable rule to have a comma
separated list of enum constants in it, however I can't find a way to get
this working.
DSLR file:
import com.test.Report;
import com.test.RulesResult;
import com.test.State;
rule "Test rule"
when
the received object
- state is NEW, MODIFY
then
#unimportant
end
DSL file:
[*][when]the received object=result : RulesResult();$stm : Report()
[*][when]- state is {stateList}=state in (State.{stateList})
Class Report has a property called state which is an enum of type State
which has a number of constants including NEW and MODIFY.
When I run this I get:
org.drools.RuntimeDroolsException: Exception executing predicate ( state ==
State.NEW || state == MODIFY)
As you can see only the first constant is being qualified with the enum
class. Can anyone help me with how to do this properly?
Thanks,
Derek
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14 years, 1 month
Necessary dependencies when using ruleflow
by Sean Su
I did some search here and found using jbpm-bpmn2 dependency will get rid
of the following error.
<dependency>
<groupId>org.jbpm</groupId>
<artifactId>jbpm-bpmn2</artifactId>
<version>5.3.0.CR1</version>
</dependency>
Is this the correct soluation? If there is such an dependency, should not
the drools-core be taking care of this in the pom file? Now I tried to add
the dependency myself but ended up with some method not found exception,
which I believe is caused by the version mismatching (since I do not know
which version would match drools 5.3.0.final).
I would assume using ruleflow is common practice in this forum. does anyone
else have this issue when working with 5.3.0.Final?
Thanks
Sean
"java.lang.RuntimeException: Unable to instantiate a process builder"
....
Caused by: java.lang.ClassNotFoundException:
org.jbpm.process.builder.ProcessBuilderFactoryServiceImpl
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at
org.drools.util.ServiceRegistryImpl$ReflectionInstantiator.newInstance(ServiceRegistryImpl.java:207)
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"But beware of the Dark Side. Anger, fear, aggression - the Dark Side of
the Force are they." -Yoda
14 years, 1 month
Evaluation of the of rules with 'window:length' event windows
by senyatur
Hi guys
We are using Drools for event processing. So we have rules that, for
instance, put accumulation function over window of number of elements (not
time).
... from accumulate(Class1($a:a) over window:length(X) from entry-point
"Point"...
The problem we are experiencing that when evaluating the rule when there are
*less* elements than X (window length) the accumulation function is still
calculated which leads to wrong results.
Is there a way in Drools to restrict firing of this type of rules when there
are less than 'length' elements in the session?
Thanks
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14 years, 1 month
How to control the order of rule execution
by San
Hi All
I am just a month old to drools.
We are doing a small poc.
*Our requirement:*-we want 5 rules should be fired but only in a particular
order.say rule 1 first, den rule 2 n so on...
I have proceeded by creating a ruleflow file in eclipse and mentioned the
ruleflow-group names in our correspondong rules in the (.drl) rule file.
In guvner 5.4 i am trying to create a process n importing our .rf ruleflow
file. Its is able to upload it sucessfully bt i am nt able to open it in
guvner editor.
*Questions:*
1st -What cud be d problems in the above case?
2nd- can I create a test case for our rule flow in guvnor and execute it?
3rd- given our requiments is there any better way of executing it other than
rule flow in Drools?
Tnks to all in advance..
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14 years, 1 month
