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This project contains a flexible metadata, data and configuration information store. Anyone can use it but it was designed for use within the Pentaho software stack.

The "meta-model" is simple and very generic. The top level entry is always a namespace. The namespace can be used by non-Pentaho companies to store their own information separate from anyone else.

The next level in the meta-model is an Element Type. A very generic name was chosen on purpose to reflect the fact that you can store just about anything. The element is at this point in time nothing more than a simple placeholder: an ID, a name and a description.

Finally, each element type can have a series of Elements.
Each element has an ID and a set of key/value pairs (called "id" and "value") as child attributes. All attributes can have children of their own. An element has security information: an owner and a set of owner-permissions describing who has which permission to use the element. (CRUD permissions)

The hierarchy:

  • Namespace
  • Element Type
  • Element
  • Attributes

How to build

metastore uses the maven framework.

Pre-requisites for building the project:

  • Maven, version 3+
  • Java JDK 1.8
  • This settings.xml in your /.m2 directory

Building it

This is a maven project, and to build it use the following command

$ mvn clean install

Optionally you can specify -Drelease to trigger obfuscation and/or uglification (as needed)

Optionally you can specify -Dmaven.test.skip=true to skip the tests (even though you shouldn't as you know)

The build result will be a Pentaho package located in target.

Running the tests

Unit tests

This will run all unit tests in the project (and sub-modules). To run integration tests as well, see Integration Tests below.

$ mvn test

If you want to remote debug a single java unit test (default port is 5005):

$ cd core
$ mvn test -Dtest=<<YourTest>> -Dmaven.surefire.debug

Integration tests

In addition to the unit tests, there are integration tests that test cross-module operation. This will run the integration tests.

$ mvn verify -DrunITs

To run a single integration test:

$ mvn verify -DrunITs -Dit.test=<<YourIT>>

To run a single integration test in debug mode (for remote debugging in an IDE) on the default port of 5005:

$ mvn verify -DrunITs -Dit.test=<<YourIT>> -Dmaven.failsafe.debug

To skip test

$ mvn clean install -DskipTests

To get log as text file

$ mvn clean install test >log.txt


  • Don't use IntelliJ's built-in maven. Make it use the same one you use from the commandline.
    • Project Preferences -> Build, Execution, Deployment -> Build Tools -> Maven ==> Maven home directory


Flexible Metadata, Data and Configuration information store



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