7:09 p.m.
Hi all,
I just started using Drools. I tried to run some example, but they all give
me errors. Is there any simple instructions for beginners?
Any help is appreciated.
Senlin
====
I tried to run examples in
drools-examples/drools-examples-drl/src/main/java/org/drools/examples
But got some exceptions such as:
Exception in thread "main" org.drools.RuntimeDroolsException: Unable to load
dialect
'org.drools.rule.builder.dialect.java.JavaDialectConfiguration:java:org.drools.rule.builder.dialect.java.JavaDialectConfiguration'
at
org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:188)
at
org.drools.compiler.PackageBuilderConfiguration.buildDialectConfigurationMap(PackageBuilderConfiguration.java:173)
at
org.drools.compiler.PackageBuilderConfiguration.init(PackageBuilderConfiguration.java:146)
at
org.drools.compiler.PackageBuilderConfiguration.<init>(PackageBuilderConfiguration.java:123)
at
org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:141)
at
org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:102)
at HelloWorldExample.main(HelloWorldExample.java:31)
Caused by: java.lang.RuntimeException: The Eclipse JDT Core jar is not in
the classpath
at
org.drools.rule.builder.dialect.java.JavaDialectConfiguration.setCompiler(JavaDialectConfiguration.java:91)
at
org.drools.rule.builder.dialect.java.JavaDialectConfiguration.init(JavaDialectConfiguration.java:52)
at
org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:184)
... 6 more
====
2:05 a.m.
Hi Senlin,
Hi all,I just started using Drools. I tried to run some example, but they
all give
me errors.
...
Exception in thread "main"
org.drools.RuntimeDroolsException:
Unable to load dialect ...
Caused by: java.lang.RuntimeException: The Eclipse JDT Core jar is not in
the
classpath
probably you have not all needed JAR files on your classpath.
It depends on your needs, which JAR files you have to include, but I think,
for the beginning, when you want to build rules using DRL, you have to
reference:
- drools-core***.jar
- drools-compiler***.jar
both from the drools main directory and further
- antlr-runtime***.jar
- core-3.2.3***.jar
- mvel***.jar
from the lib directory.
I guess you know how to include the JARs in the classpath?
If there will be similar exceptions afterwards, perhaps have a look at the
remaining JARs in these both directorys, if you need one of them.
Is there any simple instructions for beginners?
...
The documentation of Drools should help you to continue. See
http://downloads.jboss.com/drools/docs/4.0.7.19894.GA/html/ch03.html#d0e1349
for the section on needed JAR files. At bottom there is an interesting
document referenced: readme_dependencies.txt
Alexander
9:13 a.m.
Hello Alexander,
Thanks a lot!
I tried to install a fresh copy of Drools, and what I have done is:
1. checked out everything from
http://anonsvn.labs.jboss.com/labs/jbossrules/trunk using Subversion.
2. cd $DROOLS_HOME
3. mvn clean
4.mvn -Declipse -Ddocumentation clean install
-DlocalEclipseDrop=/folder/jboss-rules/local-eclipse-drop-mirror
But I got a lot of error from step 4. as
====
.... (A lot of outputs that I chopped)
Tests run: 121, Failures: 0, Errors: 91, Skipped: 0
[INFO]
------------------------------------------------------------------------
[ERROR] BUILD FAILURE
[INFO]
------------------------------------------------------------------------
[INFO] There are test failures.
Please refer to /usr/share/drools/drools-repository/target/surefire-reports
for the individual test results.
[INFO]
------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO]
------------------------------------------------------------------------
[INFO] Total time: 2 minutes 43 seconds
[INFO] Finished at: Wed Jun 11 09:28:52 EDT 2008
[INFO] Final Memory: 47M/132M
[INFO]
------------------------------------------------------------------------
====
Any idea of what is wrong?
Senlin
On Wed, Jun 11, 2008 at 3:05 AM, Alexander Claus <styjdt(a)claus4joy.de>
wrote:
Hi Senlin,
>
> Hi all,I just started using Drools. I tried to run some example, but they
all give me errors.
...
> Exception in thread "main" org.drools.RuntimeDroolsException:
> Unable to load dialect ...
> Caused by: java.lang.RuntimeException: The Eclipse JDT Core jar is not in
the classpath
probably you have not all needed JAR files on your classpath.
It depends on your needs, which JAR files you have to include, but I think,
for the beginning, when you want to build rules using DRL, you have to
reference:
- drools-core***.jar
- drools-compiler***.jar
both from the drools main directory and further
- antlr-runtime***.jar
- core-3.2.3***.jar
- mvel***.jar
from the lib directory.
I guess you know how to include the JARs in the classpath?
If there will be similar exceptions afterwards, perhaps have a look at the
remaining JARs in these both directorys, if you need one of them.
> Is there any simple instructions for beginners?
...
The documentation of Drools should help you to continue. See
http://downloads.jboss.com/drools/docs/4.0.7.19894.GA/html/ch03.html#d0e1349
for the section on needed JAR files. At bottom there is an interesting
document referenced: readme_dependencies.txt
Alexander
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Senlin Liang
3:13 a.m.
I tried to install a fresh copy of Drools, and what I have done is:
1. checked out everything from
http://anonsvn.labs.jboss.com/labs/jbossrules/trunk using Subversion.
2. cd $DROOLS_HOME
3. mvn clean
4.mvn -Declipse -Ddocumentation clean
install -DlocalEclipseDrop=/folder/jboss-rules/local-eclipse-drop-mirror
But I got a lot of error from step 4. as
====
.... (A lot of outputs that I chopped)
Tests run: 121, Failures: 0, Errors: 91, Skipped: 0
[INFO] There are test failures.
Sorry, I'm not familiar with Maven. For me it looks like as if there would
be errors in the testcases distributed with the sources.
1. Are you sure that you have downloaded a stable version?
2. Are you sure that you need to build Drools at your own? When you write "I
just started using Drools" I expect you to be a USER of Drools, so for you
it should be enough to load one of the ready-to-use distributions of the
Drools download site. Either the binarys or the Eclipse plugin should
fulfill your needs.
Alexander Claus
6:43 a.m.
Thanks a lot. It is a really good suggestion. Probably because I checked out
one copy from CVS, and it is not stable.
Senlin
On Thu, Jun 12, 2008 at 4:13 AM, Alexander Claus <styjdt(a)claus4joy.de>
wrote:
I tried to install a fresh copy of Drools, and what I have done is:
> 1. checked out everything from
> http://anonsvn.labs.jboss.com/labs/jbossrules/trunk using Subversion.
> 2. cd $DROOLS_HOME
> 3. mvn clean
> 4.mvn -Declipse -Ddocumentation clean install
> -DlocalEclipseDrop=/folder/jboss-rules/local-eclipse-drop-mirror
>
> But I got a lot of error from step 4. as
> ====
> .... (A lot of outputs that I chopped)
> Tests run: 121, Failures: 0, Errors: 91, Skipped: 0
> [INFO] There are test failures.
>
Sorry, I'm not familiar with Maven. For me it looks like as if there would
be errors in the testcases distributed with the sources.
1. Are you sure that you have downloaded a stable version?
2. Are you sure that you need to build Drools at your own? When you write
"I just started using Drools" I expect you to be a USER of Drools, so for
you it should be enough to load one of the ready-to-use distributions of the
Drools download site. Either the binarys or the Eclipse plugin should
fulfill your needs.
Alexander Claus
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https://lists.jboss.org/mailman/listinfo/rules-users
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Senlin Liang
6509
days inactive
6510
days old
4 comments
2 participants
participants (2)
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Senlin Liang