Hi (Armin and others),
using the RC4, PB api and MySql, with the following settings in
ojb.properties and database repository:
ConnectionFactoryClass=org.apache.ojb.broker.accesslayer.ConnectionFactoryNo
tPooledImpl
<jdbc-connection-descriptor
jcd-alias="default"
default-connection="true"
batch-mode="false"
useAutoCommit="1"
ignoreAutoCommitExceptions="false"
eager-release="true"
platform="MySQL"
jdbc-level="2.0"
driver="org.gjt.mm.mysql.Driver"
protocol="jdbc"
subprotocol="mysql"
dbalias="//localhost:3306/metanumber"
username="sa"
password="kulikoma"
>
<connection-pool
maxActive="21"
validationQuery="SELECT * FROM IBANX_USER" />
<sequence-manager
className="org.apache.ojb.broker.util.sequence.SequenceManagerHighLowImpl">
<attribute attribute-name="grabSize" attribute-value="50"/>
<attribute attribute-name="autoNaming" attribute-value="false"/>
<attribute attribute-name="globalSequenceId"
attribute-value="false"/>
<attribute attribute-name="globalSequenceStart"
attribute-value="10000"/>
</sequence-manager>
</jdbc-connection-descriptor>
whenever i have code like this:
broker.beginTransaction();
broker.store(obj);
broker.commitTransaction();
on issueing the commit, the underlying ConnectionManagerImpl has no
connection.
tracing (with loads of added system.out statements in OJB code) revealed
that upon the call of broker.store(obj), the connection within the
connectionmanager gets released and set to null, so when later calling a
commit, there is no connection to commit on, hence we also get the error
logged from PlatformDefaultImpl [ Given connection was null, cannot prepare
autoCommit state].
hope this gives you the info so you can reproduce it.
Roger Janssen
iBanx
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