[rules-users] Drools + ETL Process

Tue May 4 11:28:13 EDT 2010

 Hi Mauricio,

It's below, thanks!

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<persistence
    version="1.0"
    xsi:schemaLocation=
        "http://java.sun.com/xml/ns/persistence
         http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd
         http://java.sun.com/xml/ns/persistence/orm 
         http://java.sun.com/xml/ns/persistence/orm_1_0.xsd"
    xmlns:orm="http://java.sun.com/xml/ns/persistence/orm"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/persistence">

    <persistence-unit name="org.drools.persistence.jpa" transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <class>org.drools.persistence.session.SessionInfo</class>
        <class>org.drools.persistence.processinstance.ProcessInstanceInfo</class>
        <class>org.drools.persistence.processinstance.ProcessInstanceEventInfo</class>
        <class>org.drools.persistence.processinstance.WorkItemInfo</class>
        <properties>
            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
            <property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/drools" />
            <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
            <property name="hibernate.connection.password" value="mysql" />
            <property name="hibernate.connection.username" value="root" />
            <property name="hibernate.hbm2ddl.auto" value="create-drop" />
            <property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.BTMTransactionManagerLookup" />            
        </properties>
    </persistence-unit>

</persistence>

-----Original Message-----
From: Mauricio Salatino <salaboy at gmail.com>
To: Rules Users List <rules-users at lists.jboss.org>
Sent: Mon, May 3, 2010 11:24 pm
Subject: Re: [rules-users] Drools + ETL Process

Hi man,
can you show us your persistence.xml file where it's defined org.drools.persistence.jpa Persistence Unit?

2010/5/3  <andre.fonseca at mail.com>

 Hi Mauricio, thanks for your reply

I have commented the transaction , please check http://pastebin.com/NxQyft2t
I put the hibernate log there too.

There is no error, after the first time executed I have the tables created in mysql

| processinstanceeventinfo       |
| processinstanceinfo            |
| processinstanceinfo_eventtypes |
| sessioninfo                    |
| workiteminfo                   |

but they are empty, this is because I am not creating a process just rules and facts?

the drools expert knowlege database persist rules and facts or this is maintained only in the working memory?

TIA

-----Original Message-----
From: Mauricio Salatino <salaboy at gmail.com>
To: Rules Users List <rules-users at lists.jboss.org>

Sent: Sun, May 2, 2010 11:16 pm
Subject: Re: [rules-users] Drools + ETL Process

Ok looks nice.. but you shouldn't begin and commit the transaction. If you remove that.. do you have some error? 

2010/5/2  <andre.fonseca at mail.com>

 Hi Mauricio,

Sorry if I was not clear. I have already installed Guvnor, and I have also changed repository.xml to persist data in MySQL.
But I dont want to use Guvnor, I would like to author the rules and facts in Eclipse using Drools plugin ( I have also installed it ) and persist data in MySQL.
That's because I'm trying to use JPAKnowlegeService
Could you please take a look in the code of pastebin?

TIA

-----Original Message-----
From: Mauricio Salatino <salaboy at gmail.com>
To: Rules Users List <rules-users at lists.jboss.org>

Sent: Fri, Apr 30, 2010 6:54 pm
Subject: Re: [rules-users] Drools + ETL Process

Hi man,
you are mixing a lot of stuff here..
I will recommend you the following steps for achieving the steps that you are mentioning
1) Install guvnor
2) author the rules inside it.. (it already contains a JCR repository, that is similar to a database, it will allow you to store rules there), you can also author some objects (fact model) inside guvnor.
3) Then you can create tests to execute the rules and see which rules are fired.

Greetings, hope it helps!

2010/4/30  <andre.fonseca at mail.com>

 Hi Esteban,

Sorry, I have only one week looking into Drools =)
Yes, I am talking about Drools Expert Database

Looking into this http://downloads.jboss.com/drools/docs/5.0.1.26597.FINAL/apidocs/org/drools/persistence/jpa/JPAKnowledgeService.html I tried a sample snippet

http://pastebin.com/uJd5642D

But its incomplete, for example, I need to create the Rule in the database also

The things that I need to do are:
1) Create Rule and Object Facts in Java and persist them in the Drools Expert Database
2) Check in the Guvnor Interface the Rules and Facts created in the step before
2) Fire the Rules created and get the response

 Is there someone that have experience using JPA persistence with Drools? I already have a simple project configured using JPA and Hibernate but I still don't know how to proceed =(

Thanks In Advance !

-----Original Message-----
From: Esteban Aliverti <esteban.aliverti at gmail.com>
To: Rules Users List <rules-users at lists.jboss.org>
Sent: Thu, Apr 29, 2010 9:02 pm
Subject: Re: [rules-users] Drools + ETL Process

Which drools database are you talking about? If you just want to use drools expert, you don't need any db. If you want to persist your kbase or rules, feel free to use whatever mechanism you want.

2010/4/28  <andre.fonseca at mail.com>

 Hi all,

I am using Drools 5.0 with Tomcat 6 and MySQL.

Now I need to insert data in the drools database but I DON'T want to use the Guvnor interface.
This is because in the future we'll need to use a kind of ETL process to populate the drools database.

Should I create a java class with JDBC access and perform a SQL direct to that tables?
I did the reverse engineering of the drools database but I could not understood yet where the data are persisted.

Any advice should be very helpful.

Thanks in advance.

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 - http://www.jbug.com.ar
 - Salatino "Salaboy" Mauricio -

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 - http://www.jbug.com.ar
 - Salatino "Salaboy" Mauricio -

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