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git-svn-id: https://svn.apache.org/repos/asf/openjpa/trunk@1133602 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Pinaki Poddar 2011-06-08 23:37:58 +00:00
parent 5cceefda8e
commit 14816f465b
3 changed files with 21 additions and 4 deletions
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4
openjpa-slice/src/main/java/org/apache/openjpa/slice/DistributedBroker.java
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@ -22,7 +22,9 @@ import org.apache.openjpa.kernel.Broker;
import org.apache.openjpa.slice.jdbc.TargetFetchConfiguration;
/**
* Extension to Broker to allow access to virtual data store.
* Extension to Broker to allow access to {@link DistributedStoreManager virtual data store}.
* The broker manages a single persistence context like a normal {@link Broker}, but the
* context holds data from multiple databases.
*
* @author Pinaki Poddar
*

14
openjpa-slice/src/main/java/org/apache/openjpa/slice/DistributedConfiguration.java
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@ -26,10 +26,18 @@ import org.apache.openjpa.conf.OpenJPAConfiguration;
* A configuration for multiple data stores, each referred as <em>slice</em>.
* This configuration allows each underlying slice be configured with its
* own specific configuration properties such as JDBC Driver or connection
* user/password etc. <br>
* This configuration also extends by adding a {@link DistributionPolicy
* DistributionPolicy} that governs how new instances be distributed
* user/password etc.
* <br>
* This configuration also extends by several policy plugins. A policy plugin
* is an user implementation of a specific policy interface. A policy implementation
* is invoked by Slice runtime.
* <br>
* Slice recognizes following policies
* <LI> {@link DistributionPolicy Distribution Policy} governs how new instances be distributed
* among the slices.
* <LI> {@link ReplicationPolicy Replication Policy} maintains the same instance in multiple slices.
* <LI> {@link QueryTargetPolicy Query Target Policy} narrows the slices for a query execution.
* <LI> {@link FinderTargetPolicy Finder Target Policy} narrows the slices for primary key based lookup
*
* @author Pinaki Poddar
*

7
openjpa-slice/src/main/java/org/apache/openjpa/slice/DistributedStoreManager.java
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@ -23,6 +23,13 @@ import java.util.Map;
import org.apache.openjpa.kernel.StoreManager;
import org.apache.openjpa.slice.jdbc.SliceStoreManager;
/**
* A specialized {@link StoreManager Store Manager} that encapsulates multiple concrete Store Managers
* using Distributed Template (or Composite) Design Pattern.
*
* @author Pinaki Poddar
*
*/
public interface DistributedStoreManager extends StoreManager {
/**
* Adds the given slice with the given properties. This newly added slice