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Yes this can be done at runtime. The RuleBase has a reference to each
of the created StatefulSessions that has not called dispose() yet and
will push those rule changes out to each running session.<br>
<br>
<br>
Mark<br>
pns77 wrote:
<blockquote cite="mid:12180915.post@talk.nabble.com" type="cite">
<pre wrap="">
Thanks for the response.
Just to confirm when you say "...but you can remove a rule and add another
in its place..." - can this be done at runtime - i.e server is running, i go
add a new rule/change the output of an existing rule. If so, can i have the
new rule take effect ?
Also, do i need to include any specific jar file for this dynamic feature ?
Am not looking at performance here - more from a maintenance/changeability
point of view.
Mark Proctor wrote:
</pre>
<blockquote type="cite">
<pre wrap="">you cannot change an individual rule, but you can remove a rule and add
another in its place.
Mark
pns77 wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Have been able to execute/run a sample Drools file
import com.sample.Message;
rule "Hello World"
when
m : Message( status == Message.HELLO, message : message,
testStringExternal : testStringExternal )
then
System.out.println( message );
m.setMessage( "Goodbye cruel world" );
System.out.println( testStringExternal + "Message.HELLO" );
m.setStatus( Message.GOODBYE );
update( m );
end
Now, is it possible to change the logic dynamically at runtime ? Or is
the
drl file used only to externalize the business logic? I tried changing
the
message in drl file and it didnt get reflected
Environment - RAD 6.0/jdk 1.4
Used the following set of jar files
C:\Drools\libraries\drools-core.jar;
C:\Drools\libraries\drools-compiler.jar;
C:\Drools\libraries\mvel14.jar;
C:\Drools\libraries\antlr-runtime.jar;
C:\Drools\libraries\xstream.jar;
C:\Drools\lib\core-3.2.3.v_686_R32x.jar;
</pre>
</blockquote>
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</pre>
</blockquote>
<pre wrap=""><!---->
</pre>
</blockquote>
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