[rules-users] RE: RE: rules precompilation

Wed Oct 10 11:18:31 EDT 2007

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 at lists.jboss.org
[mailto:rules-users-bounces at 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 at lists.jboss.org
[mailto:rules-users-bounces at lists.jboss.org] On Behalf Of ekke
Sent: Tuesday, October 09, 2007 2:35 PM
To: rules-users at 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 at lists.jboss.org
	[mailto:rules-users-bounces at lists.jboss.org] On Behalf Of ekke
	Sent: Wednesday, October 03, 2007 4:08 PM
	To: rules-users at 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 at lists.jboss.org
		[mailto:rules-users-bounces at 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 at lists.jboss.org
		[mailto:rules-users-bounces at 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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