[rules-users] RE: RE: rules precompilation

[Manukyan, Sergey]

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?


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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