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Re: [eclipselink-users] Updates two database servers in one take

On 4/14/15 11:17 PM, Edson Richter wrote:

Atenciosamente,

Edson Carlos Ericksson Richter

On 14-04-2015 17:47, Lukas Jungmann wrote:
On 4/14/15 10:21 PM, Edson Richter wrote:
Yes, I've read both of them. Most of available examples show partitioning using annotations, but I just want to enable ReplicationPartitioning - which seems to not require nothign special, but three properties in persistence unit XML.

Remains the question: when enabling "ReplicationPartitioning" in persistence unit, why EntityManagerFactory creation throws error "Missing partitioning policy for name". How can I fix it?

This is my latest persistence unit:

<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd";>
  <persistence-unit name="TestePU" transaction-type="RESOURCE_LOCAL">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<non-jta-data-source>java:comp/env/jdbc/teste</non-jta-data-source>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
    <shared-cache-mode>ALL</shared-cache-mode>
    <validation-mode>NONE</validation-mode>
    <properties>
<property name="eclipselink.partitioning" value="ReplicationPartitioning"/>

does this value 'ReplicationPartitioning' match the value in @ReplicationPartitioning.name? Is @Partitioned("ReplicationPartitioning") included?

Thanks for your guidance.

I don't have any annotation set anywhere. As far as I could read, annotations are necessary only when using other partitions, not for replication one. How can I set those annotations as properties in persistence unit?

put it into some entity; see attached sample which I've found in old svn...
Basically it should work in a way you define some policy in annotation (or orm.xml) with some 'name' (should be enough to define it just once) and then you can refer to it through the name from other places, ie persistence.xml - in this case, EL should find a partitioning with given name and apply it to all entities in given context

thanks,
--lukas



Regards,

Edson


thanks,
--lukas

<property name="eclipselink.connection-pool.default.nonJtaDataSource" value="java:comp/env/jdbc/teste"/> <property name="eclipselink.connection-pool.node2.nonJtaDataSource" value="java:comp/env/jdbc/teste2"/>
    </properties>
  </persistence-unit>

Atenciosamente,

Edson Carlos Ericksson Richter

On 14-04-2015 16:55, Lukas Jungmann wrote:
On 4/14/15 9:11 PM, Edson Richter wrote:
I can't find correct documentation for this feature.
I think this cannot be used, since the only available example doesn't work at all, and the "Example page" in documentation is a broken link with error 404 (page not found).

some pointers, not sure how useful they will be:
https://wiki.eclipse.org/EclipseLink/Examples/JPA/Partitioning
http://java-persistence-performance.blogspot.cz/2011/05/data-partitioning-scaling-database.html

HTH,
--lukas

Atenciosamente,

Edson Carlos Ericksson Richter

On 13-04-2015 17:02, Edson Richter wrote:
Please, could someone point out how to configure Replication policy in the persistence unit?

Atenciosamente,

Edson Carlos Ericksson Richter

On 12-04-2015 14:57, Phillip Ross wrote:
Edson, I'm not sure if this is what you're looking for, but
Eclipselink supports "partitioning" which I believe also has
replication functionality:
http://www.eclipse.org/eclipselink/documentation/2.5/solutions/scaling002.htm#BABHHAEJ

hope that helps!
- Phillip


On Sun, Apr 12, 2015 at 10:55 AM, Edson Carlos Ericksson Richter
<edsonrichter@xxxxxxxxxxx> wrote:
It is possible to configure eclipselink in the following way:

1) Every query is send to one "master" server;
2) Every transaction causes insert/update/delete/procedure call to be send
in two-phase commit mode to 2~4 servers?

- I don't have problems with volatile functions (like "now()") because I do all of this at Java app level. All my functions are predictable stable. - I want to use this a alternative to applying HA-jdbc or C-jdbc proxy
libraries.


Thanks,

Edson

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