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Configuration and setup of the generator

Available in ✅ Open Source Edition   ✅ Express Edition   ✅ Professional Edition   ✅ Enterprise Edition

There are three binaries available with jOOQ, to be downloaded from http://www.jooq.org/download or from Maven central:

  • jooq-3.3.4.jar
    The main library that you will include in your application to run jOOQ
  • jooq-meta-3.3.4.jar
    The utility that you will include in your build to navigate your database schema for code generation. This can be used as a schema crawler as well.
  • jooq-codegen-3.3.4.jar
    The utility that you will include in your build to generate your database schema

Configure jOOQ's code generator

You need to tell jOOQ some things about your database connection. Here's an example of how to do it for an Oracle database

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<configuration xmlns="http://www.jooq.org/xsd/jooq-codegen-3.3.0.xsd">
  <!-- Configure the database connection here -->
  <jdbc>
    <driver>oracle.jdbc.OracleDriver</driver>
    <url>jdbc:oracle:thin:@[your jdbc connection parameters]</url>
    <user>[your database user]</user>
    <password>[your database password]</password>
    
    <!-- You can also pass user/password and other JDBC properties in the optional properties tag: -->
    <properties>
      <property><key>user</key><value>[db-user]</value></property>
      <property><key>password</key><value>[db-password]</value></property>
    </properties>
  </jdbc>

  <generator>
    <database>
      <!-- The database dialect from jooq-meta. Available dialects are
           named org.jooq.util.[database].[database]Database. Known values are:

           org.jooq.util.ase.ASEDatabase (to be used with Sybase ASE)
           org.jooq.util.cubrid.CUBRIDDatabase
           org.jooq.util.db2.DB2Database
           org.jooq.util.derby.DerbyDatabase
           org.jooq.util.h2.H2Database
           org.jooq.util.hsqldb.HSQLDBDatabase
           org.jooq.util.ingres.IngresDatabase
           org.jooq.util.mysql.MySQLDatabase
           org.jooq.util.oracle.OracleDatabase
           org.jooq.util.postgres.PostgresDatabase
           org.jooq.util.sqlite.SQLiteDatabase
           org.jooq.util.sqlserver.SQLServerDatabase
           org.jooq.util.sybase.SybaseDatabase (to be used with Sybase SQL Anywhere)

           You can also provide your own org.jooq.util.Database implementation
           here, if your database is currently not supported or if you wish to
           read the database schema from a file, such as a Hibernate .hbm.xml file 
           
           Note the classes have been moved to org.jooq.meta in jOOQ 3.11 -->
      <name>org.jooq.util.oracle.OracleDatabase</name>

      <!-- All elements that are generated from your schema (A Java regular expression.
           Use the pipe to separate several expressions) Watch out for
           case-sensitivity. Depending on your database, this might be
           important! You can create case-insensitive regular expressions
           using this syntax: (?i:expr) -->
      <includes>.*</includes>

      <!-- All elements that are excluded from your schema (A Java regular expression.
           Use the pipe to separate several expressions). Excludes match before
           includes, i.e. excludes have a higher priority -->
      <excludes></excludes>

      <!-- The schema that is used locally as a source for meta information.
           This could be your development schema or the production schema, etc
           This cannot be combined with the schemata element.

           If left empty, jOOQ will generate all available schemata. See the
           manual's next section to learn how to generate several schemata -->
      <inputSchema>[your database schema / owner / name]</inputSchema>
    </database>

    <generate>
      <!-- Generation flags: See advanced configuration properties -->
    </generate>

    <target>
      <!-- The destination package of your generated classes (within the
           destination directory)
           
           jOOQ may append the schema name to this package if generating multiple schemas,
           e.g. org.jooq.your.packagename.schema1
                org.jooq.your.packagename.schema2 -->
      <packageName>[org.jooq.your.packagename]</packageName>

      <!-- The destination directory of your generated classes -->
      <directory>[/path/to/your/dir]</directory>
    </target>
  </generator>
</configuration>

There are also lots of advanced configuration parameters, which will be treated in the manual's section about advanced code generation features Note, you can find the official XSD file for a formal specification at:
http://www.jooq.org/xsd/jooq-codegen-3.3.0.xsd

Run jOOQ code generation

Code generation works by calling this class with the above property file as argument.

org.jooq.util.GenerationTool /jooq-config.xml

Note: The GenerationTool class has been moved to org.jooq.codegen in jOOQ 3.11

Be sure that these elements are located on the classpath:

  • The XML configuration file
  • jooq-3.3.4.jar, jooq-meta-3.3.4.jar, jooq-codegen-3.3.4.jar
  • The JDBC driver you configured

A command-line example (For Windows, unix/linux/etc will be similar)

  • Put the property file, jooq*.jar and the JDBC driver into a directory, e.g. C:\temp\jooq
  • Go to C:\temp\jooq
  • Run java -cp jooq-3.3.4.jar;jooq-meta-3.3.4.jar;jooq-codegen-3.3.4.jar;[JDBC-driver].jar;. org.jooq.util.GenerationTool /[XML file]

Note that the property file must be passed as a classpath resource

Run code generation from Eclipse

Of course, you can also run code generation from your IDE. In Eclipse, set up a project like this. Note that:

  • this example uses jOOQ's log4j support by adding log4j.xml and log4j.jar to the project classpath.
  • the actual jooq-3.3.4.jar, jooq-meta-3.3.4.jar, jooq-codegen-3.3.4.jar artefacts may contain version numbers in the file names.
Eclipse configuration

Once the project is set up correctly with all required artefacts on the classpath, you can configure an Eclipse Run Configuration for org.jooq.util.GenerationTool.

Eclipse configuration

With the XML file as an argument

Eclipse configuration

And the classpath set up correctly

Eclipse configuration

Finally, run the code generation and see your generated artefacts

Eclipse configuration

Run generation with ant

When running code generation with ant's <java/> task, you may have to set fork="true":

<!-- Run the code generation task -->
<target name="generate-test-classes">
  <java fork="true" classname="org.jooq.util.GenerationTool">
    [...]
  </java>
</target>

Integrate generation with Maven

Using the official jOOQ-codegen-maven plugin, you can integrate source code generation in your Maven build process:

<plugin>

  <!-- Specify the maven code generator plugin -->
  <groupId>org.jooq</groupId>
  <artifactId>jooq-codegen-maven</artifactId>
  <version>3.3.4</version>

  <!-- The plugin should hook into the generate goal -->
  <executions>
    <execution>
      <goals>
        <goal>generate</goal>
      </goals>
    </execution>
  </executions>

  <!-- Manage the plugin's dependency. In this example, we'll use a PostgreSQL database -->
  <dependencies>
    <dependency>
      <groupId>org.postgresql</groupId>
      <artifactId>postgresql</artifactId>
      <version>9.4.1212</version>
    </dependency>
  </dependencies>

  <!-- Specify the plugin configuration.
       The configuration format is the same as for the standalone code generator -->
  <configuration>

    <!-- JDBC connection parameters -->
    <jdbc>
      <driver>org.postgresql.Driver</driver>
      <url>jdbc:postgresql:postgres</url>
      <user>postgres</user>
      <password>test</password>
    </jdbc>

    <!-- Generator parameters -->
    <generator>
      <database>
        <includes>.*</includes>
        <excludes></excludes>
        <inputSchema>public</inputSchema>
      </database>
      <target>
        <packageName>org.jooq.util.maven.example</packageName>
        <directory>target/generated-sources/jooq</directory>
      </target>
    </generator>
  </configuration>
</plugin>

See a more complete example of a Maven pom.xml File in the jOOQ / Spring tutorial.

Use jOOQ generated classes in your application

Be sure, both jooq-3.3.4.jar and your generated package (see configuration) are located on your classpath. Once this is done, you can execute SQL statements with your generated classes.

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