You should be able to serialise a Package without having to first add it to PackageBuilder, we have numerous  tests for this.


Mark, I looked at the test in PackageBuilderTest.testSerializable(), but it is too syntetic, f.e. it doesn’t use insert(…) function as I do in my scenario. Please try creating a test with inserting some MyClass() after deserializing without recreating PackageBuilder and you will see it failing. I made many tests suggesting that. Even when I use DroolsObjectInputStream()

 

-Sergey

 

 

 

From: rules-users-bounces@lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Mark Proctor
Sent: Tuesday, October 09, 2007 6:25 PM
To: Rules Users List
Subject: Re: [rules-users] RE: RE: rules precompilation

 

Manukyan, Sergey wrote: 

Ekke,
 
Thanks a lot! It worked just fine...
 
The other missing point is that after deserializing the PackageBuilder
should be buit as in your example :
 
        builder = new PackageBuilder((Package)ois.readObject());
 
and later on from that isnatcne should be retrieved the Package inctance
by doing:
 
        package = buider.getPackage();
 
as otherwise this code was failing:
        
        package = (Package)ois.readObject();  // FAILES, subsequent use
of package produces "class not found" exception when inserting objects.
 
 
 
Mark,
 
Think this should be documented somewhere in manual... under  IMPORTANT
section... by the way, IMHO that section should be more visible from
what is used currently in manual... - thin italic font, how about bold
red?
 
 

You should be able to serialise a Package without having to first add it to PackageBuilder, we have numerous  tests for this.

 
Thanks to all,
 
-Sergey
        
 
 
-----Original Message-----
From: rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] On Behalf Of ekke
Sent: Tuesday, October 09, 2007 2:35 PM
To: rules-users@lists.jboss.org
Subject: [rules-users] RE: RE: rules precompilation
 
 
Sergey,
 
of course Mark is right - you shouldn't use readExternal and the default
constructor.
this was my fault from an earlier mail.
 
please try something like this:
 
// EXPORT
...
FileOutputStream fos .....
...
ObjectOutputStream oos = null;
               try {
                       oos = new ObjectOutputStream(fos);
                       oos.writeObject(builder.getPackage());
                       oos.close();
               } catch (final IOException e) {
                       ... your code....
               }
...
 
// IMPORT
FileInputStream fis...
...
ObjectInputStream ois = null;
               try {
                       ois = new ObjectInputStream(fis);
                       builder = new
PackageBuilder((Package)ois.readObject());
                       ois.close();
               } catch (final IOException e) {
                       ...your code...;
               } catch (final ClassNotFoundException e) {
                       ...your code...;
               }
 
now your imported package should work like the exported
 
ekke
 
 
Manukyan, Sergey wrote:
  
Ekke,
 
Started using 4.0.2, but getting same error.
 
This is how I am loading the Package :
 
this.pkg = new Package();
this.pkg.readExternal(ois);
 
Does that look right to you?
 
-Sergey
 
 
 
-----Original Message-----
From: rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] On Behalf Of ekke
Sent: Wednesday, October 03, 2007 4:08 PM
To: rules-users@lists.jboss.org
Subject: [rules-users] RE: rules precompilation
 
 
sergey,
 
just tried it:
exported a package with rules as stream
(using the writeExternal() from Package)
 
then in another run I created new RuleBase, added new Package,
then import the rules into this empty Package (using the
    
readExternal()
  
from
Package)
then added some facts, execute the rules,
 
tested if all rules are there,
tested if the Facts are in workingMemory - all ok
 
(using snapshot 4.0.2, eclipse 3.3, osx 10.4.10)
 
ekke
 
Manukyan, Sergey wrote:
    
Ming, Ekke,
 
After deserialising the Package back - getting exception when
      
inserting
    
facts:
 
Exception thrown : java.lang.NoClassDefFoundError: XXXShadowProxy
 
XXX - is my class name
 
Any ideas?
 
-Sergey
 
 
 
-----Original Message-----
From: rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Jin, Ming
Sent: Wednesday, October 03, 2007 1:50 PM
To: Rules Users List
Subject: RE: [rules-users] rules precompilation
 
Sergey,
 
I am using precompiled rules.  Serializing instances of
org.drools.rule.Package works for me.
 
Thanks,
-Ming 
 
-----Original Message-----
From: rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Manukyan,
Sergey
Sent: Wednesday, October 03, 2007 12:29 PM
To: Rules Users List
Subject: [rules-users] rules precompilation
 
 
Folks,
 
Where can I find information on how to pre-compile rules in 4.0.1?
 
Thanks,
 
-Sergey
 
 
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