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#330 Add README.md for JDO
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timowest committed Jan 29, 2013
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74 changes: 74 additions & 0 deletions querydsl-jdo/README.md
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# Querydsl JDO #

The JDO module provides integration with the JDO API.

**Maven integration**

Add the following dependencies to your Maven project :

<dependency>
<groupId>com.mysema.querydsl</groupId>
<artifactId>querydsl-apt</artifactId>
<version>${querydsl.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.mysema.querydsl</groupId>
<artifactId>querydsl-jdo</artifactId>
<version>${querydsl.version}</version>
</dependency>

<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.6.1</version>
</dependency>

And now, configure the Maven APT plugin which generates the query types used by Querydsl :

<project>
<build>
<plugins>
...
<plugin>
<groupId>com.mysema.maven</groupId>
<artifactId>apt-maven-plugin</artifactId>
<version>1.0.6</version>
<executions>
<execution>
<goals>
<goal>process</goal>
</goals>
<configuration>
<outputDirectory>target/generated-sources/java</outputDirectory>
<processor>com.mysema.query.apt.jdo.JDOAnnotationProcessor</processor>
</configuration>
</execution>
</executions>
</plugin>
...
</plugins>
</build>
</project>

The JDOAnnotationProcessor finds domain types annotated with the javax.jdo.annotations.PersistenceCapable annotation and generates Querydsl query types for them.

Run clean install and you will get your Query types generated into target/generated-sources/java.

If you use Eclipse, run mvn eclipse:eclipse to update your Eclipse project to include target/generated-sources/java as a source folder.

Now you are able to construct JDOQL query instances and instances of the query domain model.

**Example query**

Here is an example query using the default variable of the QCustomer class

QCustomer customer = QCustomer.customer;
JDOQuery query = new JDOQuery(pm);
Customer bob = query.from(customer)
.where(customer.firstName.eq("Bob"))
.uniqueResult(customer);
query.close();

For more information on the Querydsl JDO module read the reference documentation http://www.querydsl.com/static/querydsl/latest/reference/html/ch02.html#jpa_integration
2 changes: 1 addition & 1 deletion querydsl-jpa/README.md
Expand Up @@ -72,4 +72,4 @@ Here is an example query using the default variable of the QCustomer class
.where(customer.firstName.eq("Bob"))
.uniqueResult(customer);
For more information on the Querydsl JPA module read the reference documentation http://www.querydsl.com/static/querydsl/latest/reference/html/ch02.html#jpa_integration
For more information on the Querydsl JPA module read the reference documentation http://www.querydsl.com/static/querydsl/latest/reference/html/ch02s02.html

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