How to generate Envers database schema with org.hibernate.tool.EnversSchemaGenerator?
I have updated Hibernate to 4.1.1.Final version. According to the documentation There are two ways to create a database schema:
- Ant task
org.hibernate.tool.ant.EnversHibernateToolTask
. - Run
org.hibernate.tool.EnversSchemaGenerator
from Java.
Hibernate doesn't work with Hibernate-4.1.1.Final. It has a blocking error .
I only found the release notes and a test case , So how can I use org.hibernate.tool.EnversSchemaGenerator
with my persistence.xml and Maven?
Update:
Found it linked in the Hibernate forum . There seems to be no answer to my question yet.
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Yuplo created a Maven plugin for Hibernate 4 . Plugin supports schema export including Envers. Below is a working example. Check the official plugin configuration documentation for an explanation of the options used.
The plugin generates a file schema.sql
in the Maven directory /target
for the target test
. Or you can manually run the target hibernate4:export
to update the file.
<project>
<build>
<plugins>
<plugin>
<groupId>de.juplo</groupId>
<artifactId>hibernate4-maven-plugin</artifactId>
<version>1.0.3</version>
<executions>
<execution>
<goals>
<goal>export</goal>
</goals>
</execution>
</executions>
<configuration>
<envers>true</envers>
<format>true</format>
<delimiter>;</delimiter>
<force>true</force>
<type>CREATE</type>
<target>SCRIPT</target>
<hibernateDialect>org.hibernate.dialect.PostgreSQL9Dialect</hibernateDialect>
</configuration>
</plugin>
</plugins>
</build>
</project>
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You don't need Ant or Hibernate tools. It is very easy to just use EnversSchemaGenerator like:
Configuration config = new Configuration();
//make sure you set the dialect correctly for your database (oracle for example below)
config.setProperty("hibernate.dialect","org.hibernate.dialect.Oracle10gDialect");
//add all of your entities
config.addAnnotatedClass(MyAnnotatedEntity.class);
SchemaExport export = new EnversSchemaGeneHator(config).export();
export.execute(true, false, false, false);
You can also specify a filename to write, but the above code will print to syslog anyway.
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The following worked for me:
public static void main(String[] args) {
Ejb3Configuration jpaConfiguration = new Ejb3Configuration().configure("persistenceUnit", null);
jpaConfiguration.buildMappings();
Configuration hibernateConfiguration = jpaConfiguration.getHibernateConfiguration();
AuditConfiguration.getFor(hibernateConfiguration);
EnversSchemaGenerator esg = new EnversSchemaGenerator(hibernateConfiguration);
org.hibernate.tool.hbm2ddl.SchemaExport se = esg.export();
se.setOutputFile("sql/schema.sql");
se.setFormat(true);
se.setDelimiter(";");
se.drop(true, false);
se.create(true, false);
}
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I have the same problem. There is now a version of Hibernate 4 Tools:
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-tools</artifactId>
<version>4.0.0-CR1</version>
</dependency>
But this Ant snippet does not export audit tables, only the "main" tables:
<target name="schema-export">
<taskdef name="hibernatetool" classname="org.hibernate.tool.ant.EnversHibernateToolTask" classpathref="classpath"/>
<hibernatetool destdir="sql">
<classpath refid="classpath"/>
<jpaconfiguration persistenceunit="persistenceUnit"/>
<hbm2ddl export="false" create="true" drop="true" format="true" outputfilename="schema.sql"/>
</hibernatetool>
</target>
Same thing with this code: Only "base" tables, no "_aud" tables:
public static void main(String[] args) {
Ejb3Configuration jpaConfiguration = new Ejb3Configuration().configure("persistenceUnit", null);
Configuration hibernateConfiguration = jpaConfiguration.getHibernateConfiguration();
AuditConfiguration.getFor(hibernateConfiguration);
EnversSchemaGenerator esg = new EnversSchemaGenerator(hibernateConfiguration);
org.hibernate.tool.hbm2ddl.SchemaExport se = esg.export();
se.setOutputFile("sql/schema.sql");
se.setFormat(true);
se.setDelimiter(";");
se.drop(true, false);
se.create(true, false);
}
Are you still curious? I'll let you know, find out how to fix the problem. Maybe someone has some advice for us?
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