10:32 a.m.
Hi,
I want to convert my file. brl to file. drl. I have this exception. does
anyone has an idea (solution)
thank you in advance
Caused by: com.thoughtworks.xstream.converters.ConversionException:
metadataList : metadataList : metadataList : metadataList
---- Debugging information ----
message : metadataList : metadataList
cause-exception :
com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message : metadataList : metadataList
class : org.drools.brms.client.modeldriven.brl.RuleModel
required-type : org.drools.brms.client.modeldriven.brl.RuleModel
path : /rule/metadataList
-------------------------------
at
com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:89)
at
com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)
at
com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)
at
com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:60)
at
com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:137)
at
com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:33)
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:923)
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:909)
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:853)
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:845)
at
org.drools.brms.server.util.BRXMLPersistence.unmarshal(BRXMLPersistence.java:91)
at fr.dto.RulesEngine.<init>(RulesEngine.java:42)
... 2 more
Caused by: com.thoughtworks.xstream.mapper.CannotResolveClassException:
metadataList : metadataList
at
com.thoughtworks.xstream.mapper.DefaultMapper.realClass(DefaultMapper.java:68)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
at
com.thoughtworks.xstream.mapper.DynamicProxyMapper.realClass(DynamicProxyMapper.java:71)
11:56 a.m.
Was your BRL generated from the same version of Guvnor as you are trying to
de-serialise?
The XStream error you show normally happens when there has been a change to
the Object model from which the XML was created and the model to which you
are trying to hydrate.
2011/9/15 AZZAZ mohamed <azzazm(a)gmail.com>
Hi,
I want to convert my file. brl to file. drl. I have this exception. does
anyone has an idea (solution)
thank you in advance
Caused by: com.thoughtworks.xstream.converters.ConversionException:
metadataList : metadataList : metadataList : metadataList
---- Debugging information ----
message : metadataList : metadataList
cause-exception :
com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message : metadataList : metadataList
class : org.drools.brms.client.modeldriven.brl.RuleModel
required-type : org.drools.brms.client.modeldriven.brl.RuleModel
path : /rule/metadataList
-------------------------------
at
com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:89)
at
com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)
at
com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)
at
com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:60)
at
com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:137)
at
com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:33)
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:923)
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:909)
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:853)
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:845)
at
org.drools.brms.server.util.BRXMLPersistence.unmarshal(BRXMLPersistence.java:91)
at fr.dto.RulesEngine.<init>(RulesEngine.java:42)
... 2 more
Caused by: com.thoughtworks.xstream.mapper.CannotResolveClassException:
metadataList : metadataList
at
com.thoughtworks.xstream.mapper.DefaultMapper.realClass(DefaultMapper.java:68)
at
com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
at
com.thoughtworks.xstream.mapper.DynamicProxyMapper.realClass(DynamicProxyMapper.java:71)
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12:01 p.m.
Hi,
Yes i use the same version for drools and guvnor 5.1
2011/9/15 Michael Anstis <michael.anstis(a)gmail.com>
Was your BRL generated from the same version of Guvnor as you are
trying to
de-serialise?
The XStream error you show normally happens when there has been a change to
the Object model from which the XML was created and the model to which you
are trying to hydrate.
2011/9/15 AZZAZ mohamed <azzazm(a)gmail.com>
> Hi,
>
> I want to convert my file. brl to file. drl. I have this exception. does
> anyone has an idea (solution)
> thank you in advance
>
> Caused by: com.thoughtworks.xstream.converters.ConversionException:
> metadataList : metadataList : metadataList : metadataList
> ---- Debugging information ----
> message : metadataList : metadataList
> cause-exception :
> com.thoughtworks.xstream.mapper.CannotResolveClassException
> cause-message : metadataList : metadataList
> class : org.drools.brms.client.modeldriven.brl.RuleModel
> required-type : org.drools.brms.client.modeldriven.brl.RuleModel
> path : /rule/metadataList
> -------------------------------
> at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:89)
> at
>
com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)
> at
>
com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)
> at
>
com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:60)
> at
> com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:137)
> at
>
com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:33)
> at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:923)
> at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:909)
> at com.thoughtworks.xstream.XStream.fromXML(XStream.java:853)
> at com.thoughtworks.xstream.XStream.fromXML(XStream.java:845)
> at
> org.drools.brms.server.util.BRXMLPersistence.unmarshal(BRXMLPersistence.java:91)
> at fr.dto.RulesEngine.<init>(RulesEngine.java:42)
> ... 2 more
> Caused by: com.thoughtworks.xstream.mapper.CannotResolveClassException:
> metadataList : metadataList
> at
> com.thoughtworks.xstream.mapper.DefaultMapper.realClass(DefaultMapper.java:68)
> at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
> at
>
com.thoughtworks.xstream.mapper.DynamicProxyMapper.realClass(DynamicProxyMapper.java:71)
>
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
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12:07 p.m.
I note XStream is expecting
"org.drools.brms.client.modeldriven.brl.RuleModel" on the classpath.
Guvnor (Community version) uses
"org.drools.ide.common.client.modeldriven.brl.RuleModel".
Is there something you are not telling us?
2011/9/15 AZZAZ mohamed <azzazm(a)gmail.com>
Hi,
Yes i use the same version for drools and guvnor 5.1
2011/9/15 Michael Anstis <michael.anstis(a)gmail.com>
> Was your BRL generated from the same version of Guvnor as you are trying
> to de-serialise?
>
> The XStream error you show normally happens when there has been a change
> to the Object model from which the XML was created and the model to which
> you are trying to hydrate.
>
> 2011/9/15 AZZAZ mohamed <azzazm(a)gmail.com>
>
>> Hi,
>>
>> I want to convert my file. brl to file. drl. I have this exception. does
>> anyone has an idea (solution)
>> thank you in advance
>>
>> Caused by: com.thoughtworks.xstream.converters.ConversionException:
>> metadataList : metadataList : metadataList : metadataList
>> ---- Debugging information ----
>> message : metadataList : metadataList
>> cause-exception :
>> com.thoughtworks.xstream.mapper.CannotResolveClassException
>> cause-message : metadataList : metadataList
>> class : org.drools.brms.client.modeldriven.brl.RuleModel
>> required-type : org.drools.brms.client.modeldriven.brl.RuleModel
>> path : /rule/metadataList
>> -------------------------------
>> at
>> com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:89)
>> at
>>
com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)
>> at
>>
com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)
>> at
>>
com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:60)
>> at
>> com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:137)
>> at
>>
com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:33)
>> at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:923)
>> at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:909)
>> at com.thoughtworks.xstream.XStream.fromXML(XStream.java:853)
>> at com.thoughtworks.xstream.XStream.fromXML(XStream.java:845)
>> at
>> org.drools.brms.server.util.BRXMLPersistence.unmarshal(BRXMLPersistence.java:91)
>> at fr.dto.RulesEngine.<init>(RulesEngine.java:42)
>> ... 2 more
>> Caused by: com.thoughtworks.xstream.mapper.CannotResolveClassException:
>> metadataList : metadataList
>> at
>> com.thoughtworks.xstream.mapper.DefaultMapper.realClass(DefaultMapper.java:68)
>> at
>> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
>> at
>>
com.thoughtworks.xstream.mapper.DynamicProxyMapper.realClass(DynamicProxyMapper.java:71)
>>
>> _______________________________________________
>> rules-users mailing list
>> rules-users(a)lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
>
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
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3:52 p.m.
I added all necessary jar in the classpath.
Here is an excerpt from my code:
Just for information I am beginner in BRMS
/**
*
*/
package fr.dto;
import java.io.*;
import javax.swing.Box.Filler;
import org.apache.commons.io.FileUtils;
import org.drools.RuleBase;
import org.drools.RuleBaseFactory;
import org.drools.WorkingMemory;
import org.drools.brms.server.util.BRDRLPersistence;
import org.drools.brms.server.util.BRXMLPersistence;
import org.drools.compiler.PackageBuilder;
import org.drools.event.DebugWorkingMemoryEventListener;
import org.drools.rule.Package;
/**
* @author mazzaz
*
*/
public class RulesEngine {
private RuleBase rules;
private Reader source;
private boolean debug = false;
public RulesEngine(String rulesFile) throws RulesEngineException {
super();
try {
try
{
File file = null;
String brl =null;
file = new File(rulesFile);
BRXMLPersistence read = (BRXMLPersistence) BRXMLPersistence.getInstance();
BRDRLPersistence write = (BRDRLPersistence)
BRDRLPersistence.getInstance();
System.out.println("read && write instance ok \n");
brl = FileUtils.readFileToString(file,"UTF-8");
System.out.println("le fichier contient"+ brl);
String outputDRL = write.marshal(read.unmarshal(brl));// code blocked here
String drlFilePath = "src/main/rules/Test_brl_to_drl.drl";
File drlFile = new File(drlFilePath);
FileUtils.writeStringToFile(drlFile,outputDRL,"");
source = new InputStreamReader(RulesEngine.class
.getResourceAsStream(drlFilePath));
}catch (IOException ie){
System.out.println("ie.getCause(): "+ie.getCause()
+"\n"+"ie.getMessage(): "+ie.getMessage());
}
PackageBuilder builder = new PackageBuilder();
builder.addPackageFromDrl(source);
Package pkg = builder.getPackage();
rules = RuleBaseFactory.newRuleBase();
rules.addPackage(pkg);
} catch (Exception e) {
throw new RulesEngineException(
"Impossible de Compiler le fichier de regles : "
+ rulesFile, e);
}
}
public void executeRules(WorkingEnvironmentCallback callback) {
/*
* L’instanciation de la class workingMemory permet de determiner si
* toute si toute les conditions d’une regle sont remplies alors les
* consequences de cette regles sont executées
*/
WorkingMemory workingMemory = rules.newStatefulSession();
if (debug) {
workingMemory
.addEventListener(new DebugWorkingMemoryEventListener());
}
callback.initEnvironment(workingMemory);// initEnvironment methode de
// l'interface
/*
* L’execution des conséquences d’une regle se produit lorsqu’on invoque
* l’objet fireAllRules WorkingMemory
*/
workingMemory.fireAllRules();
}
}
4:58 a.m.
Unit Test (droolsjbpm-ide-common)
org.drools.ide.common.server.util.BRLPersistenceTest.testRoundTrip()
performs what you are attempting too. This test passes.
I am still uncertain why you reference "org.drools.brms" packages in your
import statements. What version of Drools are you using?
2011/9/15 AZZAZ mohamed <azzazm(a)gmail.com>
I added all necessary jar in the classpath.
Here is an excerpt from my code:
Just for information I am beginner in BRMS
/**
*
*/
package fr.dto;
import java.io.*;
import javax.swing.Box.Filler;
import org.apache.commons.io.FileUtils;
import org.drools.RuleBase;
import org.drools.RuleBaseFactory;
import org.drools.WorkingMemory;
import org.drools.brms.server.util.BRDRLPersistence;
import org.drools.brms.server.util.BRXMLPersistence;
import org.drools.compiler.PackageBuilder;
import org.drools.event.DebugWorkingMemoryEventListener;
import org.drools.rule.Package;
/**
* @author mazzaz
*
*/
public class RulesEngine {
private RuleBase rules;
private Reader source;
private boolean debug = false;
public RulesEngine(String rulesFile) throws RulesEngineException {
super();
try {
try
{
File file = null;
String brl =null;
file = new File(rulesFile);
BRXMLPersistence read = (BRXMLPersistence) BRXMLPersistence.getInstance();
BRDRLPersistence write = (BRDRLPersistence)
BRDRLPersistence.getInstance();
System.out.println("read && write instance ok \n");
brl = FileUtils.readFileToString(file,"UTF-8");
System.out.println("le fichier contient"+ brl);
String outputDRL = write.marshal(read.unmarshal(brl));// code blocked
here
String drlFilePath = "src/main/rules/Test_brl_to_drl.drl";
File drlFile = new File(drlFilePath);
FileUtils.writeStringToFile(drlFile,outputDRL,"");
source = new InputStreamReader(RulesEngine.class
.getResourceAsStream(drlFilePath));
}catch (IOException ie){
System.out.println("ie.getCause(): "+ie.getCause()
+"\n"+"ie.getMessage(): "+ie.getMessage());
}
PackageBuilder builder = new PackageBuilder();
builder.addPackageFromDrl(source);
Package pkg = builder.getPackage();
rules = RuleBaseFactory.newRuleBase();
rules.addPackage(pkg);
} catch (Exception e) {
throw new RulesEngineException(
"Impossible de Compiler le fichier de regles : "
+ rulesFile, e);
}
}
public void executeRules(WorkingEnvironmentCallback callback) {
/*
* L’instanciation de la class workingMemory permet de determiner si
* toute si toute les conditions d’une regle sont remplies alors les
* consequences de cette regles sont executées
*/
WorkingMemory workingMemory = rules.newStatefulSession();
if (debug) {
workingMemory
.addEventListener(new DebugWorkingMemoryEventListener());
}
callback.initEnvironment(workingMemory);// initEnvironment methode de
// l'interface
/*
* L’execution des conséquences d’une regle se produit lorsqu’on invoque
* l’objet fireAllRules WorkingMemory
*/
workingMemory.fireAllRules();
}
}
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5:12 a.m.
I use version drools-core5.2.0 and drools-compiler 5.2.0
In fact I created my business rules with the guided rule . it generates
automatically a. Brl.
I want to convert it to .drl me to build my package builder.
Paris
5:20 a.m.
What JARs are you using then?
We don't have a class "org.drools.brms.server.util.BRDRLPersistence" only
"org.drools.ide.common.server.util.BRDRLPersistence" in
droolsjbpm-ide-common-5.2.0.Final.jar
2011/9/16 AZZAZ mohamed <azzazm(a)gmail.com>
I use version drools-core5.2.0 and drools-compiler 5.2.0
In fact I created my business rules with the guided rule . it generates
automatically a. Brl.
I want to convert it to .drl me to build my package builder.
Paris
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5:27 a.m.
I use org.drools.brms.server.util.BRDRLPersistence;
I'm confused that's two days that I blocked, especially since I'm new in
BRMS. So if you have a more accurate method to start I would be grateful
5:35 a.m.
OK, let's step back a bit.
What are you trying to achieve?
Do you *want* the DRL text, or do you want to load a BRL rule?
Where did you get the BRL rule from, normally rules are authored in DRL (in
which case you'd use KnowledgeBuilder, as in all the examples) or in Guvnor
(in which case using a binary package compiled in Guvnor is the norm).
The class you specify isn't in drools 5.2.0.Final (and you still failed to
answer what JAR you find it in).
With kind regards,
Mike
2011/9/16 AZZAZ mohamed <azzazm(a)gmail.com>
I use org.drools.brms.server.util.BRDRLPersistence;
I'm confused that's two days that I blocked, especially since I'm new in
BRMS. So if you have a more accurate method to start I would be grateful
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5:53 a.m.
My mini project
I try to express business rules using the resources of java object.
that's why I encode two classex Car and Driver and I apply a business rule to
see if it can besecured like this (example): if the driver's age> 25 and the
make of car! = BMW then will not be provided
I use to express this rule guided rule integrated to eclipse it generates
me this rule in a.brl
Then I want to deploy this information guvnor
what is the correct jar that I use and how I make the link between Eclipse
and Guvnor
so I can test my code
6:12 a.m.
Support for the BRL editor in Eclipse was dropped as from 5.2.0, so I assume
you are not using the Eclipse Plugin for 5.2 - in which case backward
compatibility cannot be guaranteed. See the release notes for details.
The WebDav interface in Eclipse is probably most suitable for your needs.
You can author DRL files in Eclipse and push these to Guvnor through WebDav.
They should then be able to be built into a package in Guvnor and either
downloaded manually or via the use of KnowledgeAgent.
As you say you are new to Drools I feel most of this is way too complicated
for what you describe. I would recommend authoring your rules in DRL and
using KnowledgeBuilder, as in the examples.
Once you understand more how this process works and you want to scale your
mini-project into an enterprise application you can start to look at other
mechanisms available.
Only my 2 cents worth.
With kind regards,
Mike
2011/9/16 AZZAZ mohamed <azzazm(a)gmail.com>
My mini project
I try to express business rules using the resources of java object.
that's why I encode two classex Car and Driver and I apply a business rule
to see if it can besecured like this (example): if the driver's age> 25
and the make of car! = BMW then will not be provided
I use to express this rule guided rule integrated to eclipse it
generates me this rule in a.brl
Then I want to deploy this information guvnor
what is the correct jar that I use and how I make the link between Eclipse
and Guvnor
so I can test my code
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11:16 a.m.
Hi,
i have this exception every time i'm used drools 5.2 final wiht jdk 1.6,
eclipse 3.4. I configured correctly the classpath.
java.lang.RuntimeException: org.drools.compiler.DroolsParserException:
java.lang.IllegalArgumentException: Unable to instantiate service for Class
'org.drools.compiler.BusinessRuleProvider'
at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:638)
at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
anybody can help !!
tk's in advance
5:23 a.m.
To do that shouldn't you just be doing something like the following? You should be
using the knowledge* apis rather than the old rules* apis.
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newReaderResource(new File(fileReader)), ResourceType.BRL);
KnowledgeBase knowledgeBase =
KnowledgeBaseFactory.newKnowledgeBase(conf);knowledgeBase.addKnowledgePackages(kbuilder.getKnowledgePackages());
knowledgebase.newStatefulSession();
Thomas
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On
Behalf Of AZZAZ mohamed
Sent: 16 September 2011 10:12
To: Rules Users List
Subject: Re: [rules-users] (no subject)
I use version drools-core5.2.0 and drools-compiler 5.2.0
In fact I created my business rules with the guided rule . it generates automatically a.
Brl.
I want to convert it to .drl me to build my package builder.
Paris
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13 comments
3 participants
participants (3)
-
AZZAZ mohamed -
Michael Anstis -
Swindells, Thomas