Package kodo.abstractstore

Abstract StoreManager Implementation

See:
Description

Class Summary

AbstractStoreManager	Abstract store manager implementation to ease development of custom Kodo back-ends.
AbstractStorePersistenceManagerFactory	PersistenceManagerFactory implementation for use with the AbstractStoreManager.

Package kodo.abstractstore Description

Abstract StoreManager Implementation

This package provides some infrastructure classes to help in the creation of JDO drivers for new non-relational data stores.

To create support for a new data store:

• Extend AbstractStoreManager following the rules outlined in its documentation. You will need to implement methods to: check for the existence of a given OID in the data store; load a given set of fields into an existing instance; load all the default fields for an as-yet-unloaded instance; flush all changes made in a transaction to the data store; and load all instances of a given type (and its subtypes) from the data store. There are additional methods that you can optionally override in order to support other options such as incremental flushing and datastore identity.

• Configure your kodo.properties file (or your resource archive configuration file) to use AbstractStorePersistenceManagerFactory, and specify your AbstractStore extension as the kodo.abstractstore.AbstractStoreManager class:

  javax.jdo.PersistenceManagerFactoryClass: kodo.abstractstore.AbstractStorePersistenceManagerFactory kodo.abstractstore.AbstractStoreManager: com.xyz.MyAbstractStoreManagerSubclass

Additionally, you can optionally extend JDOConfigurationImpl to define your own configuration options, using the helper classes defined in the com.solarmetric.conf package. To do this you must also override the AbstractStoreManager.newConfiguration method.