org.jboss.dna.connector.store.jpa.model.simple
Class SimpleJpaRepository

java.lang.Object
  org.jboss.dna.graph.connector.map.MapRepository
      org.jboss.dna.connector.store.jpa.model.simple.SimpleJpaRepository

public class SimpleJpaRepository
extends MapRepository

Implementation of MapRepository for the Simple JPA connector model. This class exposes a map of workspace names to workspaces and each workspace provides a logical mapping of node UUIDs to nodes. The JpaNode class functions as an adapter between the persistent entity for nodes and the map repository interface for nodes.

This class differs slightly from the other MapRepository implementations in that it exists only within the lifetime of a single EntityManager (which itself is opened and closed within the lifetime of a single SimpleJpaConnection. The other map repository implementations all outlive any particular connection and generally survive for the lifetime of the DNA server.

Constructor Summary

SimpleJpaRepository(String sourceName, UUID rootNodeUuid, javax.persistence.EntityManager entityManager, ExecutionContext context, boolean compressData, boolean creatingWorkspacesAllowed, long minimumSizeOfLargeValuesInBytes)

SimpleJpaRepository(String sourceName, UUID rootNodeUuid, String defaultWorkspaceName, String[] predefinedWorkspaceNames, javax.persistence.EntityManager entityManager, ExecutionContext context, boolean compressData, boolean creatingWorkspacesAllowed, long minimumSizeOfLargeValuesInBytes)

Method Summary

MapWorkspace	getWorkspace(String name) Returns the workspace with the given name
Set<String>	getWorkspaceNames() Returns a list of the names of the currently created workspaces
MapRepositoryTransaction	startTransaction(boolean readonly) Begin a transaction, hinting whether the transaction will be used only to read the content.

Methods inherited from class org.jboss.dna.graph.connector.map.MapRepository

createWorkspace, createWorkspace, destroyWorkspace, getRootNodeUuid, getSourceName

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SimpleJpaRepository

public SimpleJpaRepository(String sourceName,
                           UUID rootNodeUuid,
                           String defaultWorkspaceName,
                           String[] predefinedWorkspaceNames,
                           javax.persistence.EntityManager entityManager,
                           ExecutionContext context,
                           boolean compressData,
                           boolean creatingWorkspacesAllowed,
                           long minimumSizeOfLargeValuesInBytes)

SimpleJpaRepository

public SimpleJpaRepository(String sourceName,
                           UUID rootNodeUuid,
                           javax.persistence.EntityManager entityManager,
                           ExecutionContext context,
                           boolean compressData,
                           boolean creatingWorkspacesAllowed,
                           long minimumSizeOfLargeValuesInBytes)

Method Detail

getWorkspace

public MapWorkspace getWorkspace(String name)

Description copied from class: MapRepository

Returns the workspace with the given name

Overrides:

getWorkspace in class MapRepository

Parameters:

name - the name of the workspace to return

Returns:

the workspace with the given name; may be null if no workspace with the given name exists

getWorkspaceNames

public Set<String> getWorkspaceNames()

Description copied from class: MapRepository

Returns a list of the names of the currently created workspaces

Overrides:

getWorkspaceNames in class MapRepository

Returns:

a list of the names of the currently created workspaces

startTransaction

public MapRepositoryTransaction startTransaction(boolean readonly)

Begin a transaction, hinting whether the transaction will be used only to read the content. If this is called, then the transaction must be either committed or rolled back.

Specified by:

startTransaction in class MapRepository

Parameters:

readonly - true if the transaction will not modify any content, or false if changes are to be made

Returns:

the transaction; never null

See Also:

MapRepository.startTransaction(boolean)