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https://issues.apache.org/jira/browse/ARIES-1355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14644414#comment-14644414
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Matt Pavlovich commented on ARIES-1355:
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Giuseppe-
I agree, that is possible for simple scenarios. However, that generally
assumes that the schema is straight forward and managed by the JPA provider. In
most cases we work with, that does not meet the requirements.
We end up with something that allows us to abstract the column definition
variance like this:
META-INF/orm-mysql.xml
META-INF/orm-mssql.xml
META-INF/orm-oracle.xml
META-INF/persistence.xml (pu-mysql, pu-mssql, pu-oracle, etc..)
For example:
* MS SQL requires different column definitions for identity to use Sequence
Objects vs MySQL which has AUTO_INCREMENT
* Date time column definitions vary across vendors for date precision
* Same for DOUBLE, XML, BLOB/CLOB and other column types requiring specific
precision
* etc.
> blueprint-jpa does not interpolate configuration properties
> -----------------------------------------------------------
>
> Key: ARIES-1355
> URL: https://issues.apache.org/jira/browse/ARIES-1355
> Project: Aries
> Issue Type: Bug
> Components: Blueprint
> Affects Versions: blueprint-cm-1.0.6
> Reporter: Matt Pavlovich
>
> When attempting to wire in the persistent unit name from a cm property, aries
> jpa does not interpolate the value, and instead tries to lookup the ${name}
> literally.
> {noformat}
> <?xml version="1.0" encoding="UTF-8"?>
> <blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0";
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
> xmlns:camel="http://camel.apache.org/schema/blueprint";
> xmlns:cm="http://aries.apache.org/blueprint/xmlns/blueprint-cm/v1.0.0";
> xmlns:jpa="http://aries.apache.org/xmlns/jpa/v1.1.0";
> xmlns:tx="http://aries.apache.org/xmlns/transactions/v1.1.0";
> xsi:schemaLocation="
> http://www.osgi.org/xmlns/blueprint/v1.0.0
> http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd";>
> <cm:property-placeholder persistent-id="com.company.jpatest">
> <cm:default-properties>
> <cm:property name="persistentUnitName" value="my.pu" />
> </cm:default-properties>
> </cm:property-placeholder>
> <bean id="tracingStoreTx" class="com.company.StuffJPAImpl"
> destroy-method="destroy">
> <jpa:unit unitname="${persistentUnitName}"
> property="entityManagerFactory" />
> </bean>
> ..
> {noformat}
> Log message
> {noformat}
> [(&(&(!(org.apache.aries.jpa.proxy.factory=*))(osgi.unit.name=${persistentUnitName}))(objectClass=javax.persistence.EntityManagerFactory)),
>
> (&(&(!(org.apache.aries.jpa.proxy.factory=*))(osgi.unit.name=${persistentUnitName}))(objectClass=javax.persistence.EntityManagerFactory))]
> java.util.concurrent.TimeoutException
> {noformat}
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