Apache JDO Project Structure

Apache JDO uses maven for project builds. Each sub-project appears as a directory underneath the top level jdo directory. Each sub-project contains some combination of:

  • a src directory which contains the Java sources
  • a test directory which contains the Java sources for the JUnit tests
  • an xdocs directory which contains the maven site building documents
  • project.properties maven file
  • project.xml maven file
  • maven.xml maven file

Dependencies

  • Apache JDO uses maven for builds. Get more information about maven here.
  • Apache JDO uses maven and defines maven artifacts. See MavenInfo.

Sub-Projects

The following sub-projects have been defined:

directory

groupId

artifactId

description

api11

javax.jdo

jdo1-api

JDO 1.0 API. This is the standard definition of the JDO API as defined by the JSR-12 standard. No additional work is expected in this project.

ri11

org.apache.jdo

jdo1-ri

JDO 1.1 Reference Implementation. This is a file-based, single-user store for persistent Java objects. The storage component is called File Object Store (FOStore). The version number is 1.1 to reflect that the Java package has changed from com.sun.jdori to org.apache.jdo. The license has also changed.

btree

org.apache.jdo

jdo-btree

This sub-project contains an adapter to the btree open source implementation developed by Netbeans. The maven build for this directory downloads the btree package sources from Netbeans and builds it. The ri11 project depends on this sub-project.

tck11

org.apache.jdo

jdo1-tck

JDO 1.1 Technology Compatibility Kit. This set of programs tests that a JDO 1.0 implementation is in compliance with the standard. The version number is 1.1 to reflect that the test framework has changed from JavaTest (a proprietary Sun package not suitable for open source projects) toJUnit, an open source test framework. The license has also changed.

api20

javax.jdo

jdo2-api

JDO 2.0 API. This is the standard definition of the JDO API as defined by the JSR-243 standard.

tck20

org.apache.jdo

jdo2-tck

JDO 2.0 Technology Compatibility Kit. This set of programs tests that a JDO 2.0 implementation is in compliance with the standard.

fostore20

org.apache.jdo

jdo2-fostore

JDO 2.0 FOStore (File Object Store) implementation. This is an implementation of JDO 2.0 based on the JDO 1.0 Reference Implementation. It does not support relational data access, so it is inappropriate for the JDO 2.0 Reference Implementation. See below.

core20

org.apache.jdo

jdo2-core

JDO 2.0 core components implementation. This is the core of an implementation of JDO 2.0 based on the JDO 1.0 Reference Implementation. It includes the model of persistence and other utility functionality.

query20

org.apache.jdo

jdo2-query

JDO 2.0 query implementation. This is the query component responsible for parsing JDOQL and generating the query plan and execution.

enhancer20

org.apache.jdo

jdo2-enhancer

JDO 2.0 enhancer implementation. This is the enhancer component of an implementation of JDO 2.0 based on the JDO 1.0 Reference Implementation. It is used to modify class files so they can be used in a binary-compatible implementation of JDO 2.0.

geronimo

org.apache.jdo

jdo2-geronimo

JDO 2.0 Geronimo Integration. This project will build the glue between the JDO 2.0 Reference Implementation and the J2EE compliant application server. We expect to use a common persistence framework (Tranql) to provide both EJB3 and JDO persistence services. We also expect to allow FOStore to be able to be defined as a Connector, and looked up as a JNDI resource.
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