Author: lresende
Date: Sat Nov 17 14:27:26 2007
New Revision: 596016
URL: http://svn.apache.org/viewvc?rev=596016&view=rev
Log:
TUSCANY-1903 - Applying patch from Geng Shaoguang
Added:
incubator/tuscany/java/sca/modules/implementation-openjpa/README (with
props)
Added: incubator/tuscany/java/sca/modules/implementation-openjpa/README
URL:
http://svn.apache.org/viewvc/incubator/tuscany/java/sca/modules/implementation-openjpa/README?rev=596016&view=auto
==============================================================================
--- incubator/tuscany/java/sca/modules/implementation-openjpa/README (added)
+++ incubator/tuscany/java/sca/modules/implementation-openjpa/README Sat Nov 17
14:27:26 2007
@@ -0,0 +1,33 @@
+Tuscany implementation OpenJpa
+===============================
+Persistence technology is a very part of enterprise level application system.
Tuscany has provided
+SDO implementation and a non standard but useful DAS infrastructure.
+But Tuscany also considered much existed software resource has used popular
technologies as
+hibernate and jpa.
+Hibernate has license problem so an implementation based on it can not be
hosted by Apache.
+This implementation is developed on the bases of Tuscany¡¯s robust extensible
architecture and of
+course the jpa implementation project: Apache OpenJPA.
+
+This module is under the process of more improvement:
+
+For the time being, user of this module could configure a component as did by
the *.composite file
+in this module. The component is infact a proxy of a JPA top api:
+ javax.persitence.EntityManager
+User of this module could use all the method provided by this interface.
+
+An difference is: OpenJPA could work with 2PC only if there is JNDI context
and
+TransactionManager registered in the JNDI. This module modified much to work
with
+policy-transaction module.
+
+For the time being, the Transaction boundary is located around one invocation
of the EntityManager. But in the future, these boundary will move up to an
component who references the EntityManager, that will be the righteous way for
SCA developers!
+
+The data base working in this module is now Derby, it is for the ease of test
running. MySQL
+could also work with this module, but it need database deployment in before.
Not all types of database could work with this module, such as HSql, it did not
provided a XA DataSource implementation up to now.
+
+There are much powerful features provided by openjpa, such as table auto
generation, it is now also working in this module.
+
+User could get start from looking at what is done by:
+??org.apache.tuscany.sca.implementation.openjpa.ImplJpaTestCase
+??and
+??openjpa.composite
+When running the testcase, a RuntimeException stack trace(from inside openjpa
api) will get printed on your screen, it is just ok, because of a trying of
duplication primary key insertion, and it causes transaction rolling back.
Propchange: incubator/tuscany/java/sca/modules/implementation-openjpa/README
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