[rules-users] Examples won't run

[Paul Smith]

I noticed this when I was playing with some code last night. If I try to use
the following from the doco

PackageBuilderConfiguration cfg = new PackageBuilderConfiguration( );
JavaDialectConfiguration javaConf = (JavaDialectConfiguration)
cfg.getDialectConfiguration( "java" );
javaConf.setCompiler( JavaDialectConfiguration.JANINO );

I get the error you are seeing when trying to instantiate a
PackageBuilderConfiguration.

However if I use the following


Properties properties = new Properties();
properties.setProperty( "drools.dialect.java.compiler",
                        "JANINO" );
PackageBuilderConfiguration cfg = new PackageBuilderConfiguration( properties );
JavaDialectConfiguration javaConf = (JavaDialectConfiguration)
cfg.getDialectConfiguration( "java" );
assertEquals( JavaDialectConfiguration.JANINO,
              javaConf.getCompiler() ); // demonstrate that the
compiler is correctly configured


Janino seems to work ok. Looks like the default constructor for a
PackageBuilderConfiguration needs to be able to locate the Eclipse JDT
classes.

On 9/5/07, Garry Brother <gmbroth at hotmail.com> wrote:
>
> Hi,
>
> After two (unsuccessful) attempts at downloading and running
> the drools examples, I'm ready to throw in the towel.  Before I
> do that, however, I'm going to beg for help.
>
> With ant, I was able to build the examples using the following
> classpath:
>
>    <path id="drools.jars" >
>       <fileset dir="${drools.home}" >
>           <include name="*.jar"/>
>       </fileset>
>     </path>
>
>     <target name="compile">
>       <mkdir dir="target"/>
>       <mkdir dir="target/classes"/>
>
>       <copy todir="target/classes">
>         <fileset dir="src/main/resources"/>
>         <fileset dir="src/main/rules"/>
>       </copy>
>
>       <javac srcdir="src/main/java"
>              destdir="target/classes"
>              source="1.4">
>         <classpath >
>           <path refid="drools.jars" />
>           <fileset dir="lib">
>             <include name="*.jar"/>
>           </fileset>
>         </classpath>
>       </javac>
>     </target>
>
> All attempts to run the "run-waltz12" example fail regardless
> of what classes I throw at it.  I tried both "drools.jars"
> above and the classpath below, without luck, as well as other
> combinations of jars:
>
>   <path id="jsr94.jars" >
>     <fileset dir="${drools.home}" >
>         <include name="drools-core*.jar"/>
>         <include name="drools-compiler*.jar"/>
>         <include name="drools-jsr94.jar"/>
>     </fileset>
>     <fileset dir="${drools.home}/lib" >
>         <include name="jsr94-1.1.jar"/>
>         <include name="janino-2.5.7.jar"/>
>     </fileset>
>   </path>
>
> Latest error is this:
>
>      [java] Caused by: java.lang.RuntimeException: The Eclipse JDT Core
> jar is not in the classpath
>
> I went out of my way to specify the janino jar so don't know
> why an eclipse jar is required (I'm building from the command
> line and not using Eclipse.)
>
> I'm sure it's my ignorance but wonder if someone could email me
> ant script that will do the job?
>
> Thanks, Garry
>
>
>
>
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