Note that if you want to make use of OpenJPA then you first need to install OpenJPA and Connector/J.

The example here was on Fedora12 with the MySQL Cluster 7.1.2 source:

CFLAGS=”-O3″ CXX=gcc CXXFLAGS=”-O3 -felide-constructors -fno-exceptions -fno-rtti” ./configure -prefix=/usr/local/mysql –enable-assembler –with-mysqld-ldflags=-all-static –with-plugins=max –with-openjpa –with-classpath=/usr/local/openjpa/openjpa-1.2.1.jar:/usr/local/openjpa/lib/geronimo-jpa_3.0_spec-1.0.jar:/usr/local/openjpa/lib/geronimo-jta_1.1_spec-1.1.jar  –with-extra-charsets=all

make

make install

That’s it! Obviously, the exact location of the OpenJPA jars will depend on where you installed it. Note that for ‘make install’ you need to run it from an account that has access to /usr/local

I’ll follow up a little later with a post with example applications (in the mean time refer to this tutorial or the MySQL Cluster for Java on-line documentation) but FYI these are the options I use to compile and run my test aps:

ClusterJ:

javac -classpath /usr/local/mysql/share/mysql/java/clusterj-api.jar:. Main.java Employee.java

java -classpath /usr/local/mysql/share/mysql/java/clusterj.jar:. -Djava.library.path=/usr/local/mysql/lib/mysql/ Main

ClusterJPA:

javac -classpath /usr/local/mysql/share/mysql/java/clusterjpa.jar:/usr/local/openjpa/openjpa-1.2.1.jar:/usr/local/openjpa/lib/geronimo-jpa_3.0_spec-1.0.jar:. Main.java Employee.java Department.java

java -Djava.library.path=/usr/local/mysql/lib/mysql/ -classpath /usr/local/mysql/share/mysql/java/clusterjpa.jar:/usr/local/openjpa/openjpa-1.2.1.jar:/usr/local/openjpa/lib/*:/usr/local/connectorj/mysql-connector-java-5.1.12-bin.jar:. Main

ClusterJ Architecture

MySQL have been working on a new way of accessing MySQL Cluster using Java. The aim being to give most of the performance of the C++ NDB API but in a much friendlier form for Java developers. There will in fact be 2 new interfaces – ClusterJ (MySQL’s own API) and a JPA solution (using OpenJPA). If you want to see for yourself then take a look at the Blog entry from Bernhard Ocklin – the engineering manager responsible for this work.