Hello,
start levels have been removed for a number of bundles in the Karaf
enterprise features. In principle a good idea (sometimes start levels are
even seen as anti-pattern in OSGi).
However, sometimes I now face the issue that the transaction service is
missing when one of my persistence bundle start up, and some initial writing
to the DB fails (currently, I don't have the stack trace available, but it
says "no transaction associated with this thread"). Is does not happen every
time (looks more frequent if the machine is busy with other things, or on
devices with restricted computing power). Giving the data source /
persistence bundles higher start levels than 80 does not help.
I'm using pax-jdbc to create the data source (however, not pax-jdbc-config,
since also that turned out too slow sometimes to create the data sources
before the persistence bundles started).
Might be a dumb question: how can make the data source bundle (data source
created via blueprint.xml) waiting for the transaction manager being
available? And / or (even better, since then I could switch to using
pax-jdbc-config for creation of the data source): how can I make my
persistence bundles waiting for the datasource being available? I only have
the blueprint.xml (for the data source) and the persistence.xml (for the
persistence unit), and currently don't see a possibility to make them wait
for their dependencies.
Currently, I'm using JPA 1.0.4, transaction 1.3.0.
>From my datasource blueprint.xml:
<bean id="myXADataSource"
class="org.apache.commons.dbcp2.managed.BasicManagedDataSource"
destroy-method="close">
<property name="url" value="${url}" />
<property name="username" value="${userName}" />
<property name="password" value="${password}" />
<property name="driverClassName" value="org.postgresql.Driver"
/>
<property name="initialSize" value="10" />
<property name="maxTotal" value="50" />
<property name="maxIdle" value="20" />
<property name="transactionManager" ref="transactionManager" />
</bean>
<reference id="transactionManager"
interface="javax.transaction.TransactionManager" />
Regards,
Jochen
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