Passing the JDBC URL to openjpa-maven-plugin to refresh data in PostgreSQL - postgresql

Question

In pom.xml I have (taken from http://struberg.wordpress.com/2012/05/10/using-jpa-in-real-projects-part-1/):
<properties>
<openjpa.sql.action>refresh</openjpa.sql.action>
<database.driver.name>org.postgresql.Driver</database.driver.name>
<database.connection.url>jdbc:postgresql://myURL</database.connection.url>
<database.user>user</database.user>
<database.password>password</database.password>
</properties>
<plugin>
<groupId>org.apache.openjpa</groupId>
<artifactId>openjpa-maven-plugin</artifactId>
<version>${openjpa-version}</version>
<configuration>
<includes>**/entity/*.class</includes>
<excludes>**/entity/Q*.class</excludes>
<addDefaultConstructor>true</addDefaultConstructor>
<enforcePropertyRestrictions>true</enforcePropertyRestrictions>
<sqlAction>${openjpa.sql.action}</sqlAction>
<connectionDriverName>${database.driver.name}</connectionDriverName>
<connectionProperties>
jdbcUrl=${database.connection.url},
user=${database.user},
password=${database.password},
</connectionProperties>
</configuration>
<executions>
<execution>
<id>enhancer</id>
<phase>process-classes</phase>
<goals>
<goal>enhance</goal>
<goal>sql</goal>
</goals>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.apache.openjpa</groupId>
<artifactId>openjpa-all</artifactId>
<version>${openjpa-version}</version>
</dependency>
</dependencies>
</plugin>
For some reason, the URL isn't passed correctly and I get
Execution enhancer of goal org.apache.openjpa:openjpa-maven-plugin:2.2.0:sql failed: A connection could not be obtained for driver class "org.postgresql.Driver" and URL "null". You may have specified an invalid URL. (org.apache.openjpa:openjpa-maven-plugin:2.2.0:sql:enhancer:process-classes)
I've tried replacing jdbcUrl in connectionProperties with url, URL, etc. Nothing helps. However, I can put the URL in persistence.xml and this does work:
<property name="javax.persistence.jdbc.url"
value="jdbc:postgresql://myURL" />
Driver, user, and password are obtained from Maven properties. However, since this URL is only used to generate DDL (data source is created in a different way at the runtime), I'd prefer to have it in pom.xml as well without polluting persistence.xml. Is there a way to do this?

Answer 1

I used commons-dbcp BasicDataSource for getting the connection like this:
<connectionDriverName>org.apache.commons.dbcp.BasicDataSource</connectionDriverName>
<connectionProperties>
driverClassName=${database.driver.name},
url=${database.connection.url},
username=${database.user},
password=${database.password},
</connectionProperties>