3.2. Update the Parent Module

3.2. Update the Parent Module
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To start with, we're going to have dependencies on JPA Objects, on a JDBC driver, and on SLF4J (used by Hibernate). Add these to a <properties> section:

<properties>
  <jpaobjects.version>1.0.0</jpaobjects.version>                     <!-- or whatever -->
  <postgresql.jdbc.version>8.3-603.jdbc3</postgresql.jdbc.version>   <!-- eg for PostgreSQL JDBC driver -->
  <slf4j.version>1.4.3</slf4j.version>           
</properties>

Next, in the parent module's <dependencyManagement> section, add in entries for:

for JPA Objects:

<dependencyManagement>
  <dependencies>
    ...
    <dependency>
      <groupId>org.starobjects.jpa</groupId>
      <artifactId>applib</artifactId>
      <version>${jpaobjects.version}</version>
    </dependency>

    <dependency>
      <groupId>org.starobjects.jpa</groupId>
      <artifactId>runtime</artifactId>
      <version>${jpaobjects.version}</version>
    </dependency>

    <dependency>
      <groupId>org.starobjects.jpa</groupId>
      <artifactId>tools</artifactId>
      <version>${jpaobjects.version}</version>
    </dependency>
    ...
  </dependencies>
</dependencyManagement>

Note that this will transitively bring in Hibernate

for the JDBC driver:

<dependencyManagement>
  <dependencies>
    ...
    <dependency>
      <groupId>postgresql</groupId>
      <artifactId>postgresql</artifactId>
      <version>${postgresql.jdbc.version}</version>
    </dependency>
    ...
  </dependencies>
</dependencyManagement>

for SLF4J:

<dependencyManagement>
  <dependencies>
    ...
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>${slf4j.version}</version>
    </dependency>

    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>${slf4j.version}</version>
    </dependency>

    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-nop</artifactId>
      <version>${slf4j.version}</version>
      <scope>test</scope>
    </dependency>
    ...
  </dependencies>
</dependencyManagement>

Lastly, add a reference to the new Maven submodule that will hold the JPA repository implementations:

<modules>
  <module>dom</module>
  <module>fixture</module>
  <module>service</module>
  <module>service-jpa</module>  <!-- JPA implementations -->
  <module>commandline</module>
  <module>webapp</module>
</modules>