er.neo4jadaptor.storage.neo4j

Class NodeStore

java.lang.Object

er.neo4jadaptor.storage.neo4j.NodeStore

All Implemented Interfaces:

Store<Ersatz,Neo4JErsatz>

public class NodeStore
extends Object
implements Store<Ersatz,Neo4JErsatz>

Storage for entities that use only one numerical EO attribute for primary key. Each row is represented as a node. Each to-one EO relationship is represented as a single outgoing relationship. Foreign key values are not stored, those are calculated based on existing relationships whenever needed.

Author:

Jedrzej Sobanski

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	NodeStore.NodeNumber Only used to distinguish primary key values being result of a newPrimaryKey() call from those where primary key value is set manually.

Constructor Summary

Constructors

Constructor and Description
NodeStore(org.neo4j.graphdb.GraphDatabaseService db, EOEntity entity, NodeSpaceManager spaceManager, TemporaryNodePool tempNodePool)

Method Summary

Modifier and Type	Method and Description
void	delete(Neo4JErsatz neoErsatz) Delete record from the store.
Neo4JErsatz	insert(Ersatz row) Creates a new record in the store.
Ersatz	newPrimaryKey() Generate new primary key.
Cursor<Neo4JErsatz>	query(EOQualifier q) Query for records matching EO qualifier.
void	update(Ersatz newValues, Neo4JErsatz neoErsatz) Update record with the given values.
protected static void	validateEntity(EOEntity entity)

Methods inherited from class java.lang.Object

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

Constructor Detail

NodeStore

public NodeStore(org.neo4j.graphdb.GraphDatabaseService db,
                 EOEntity entity,
                 NodeSpaceManager spaceManager,
                 TemporaryNodePool tempNodePool)

Method Detail

insert

public Neo4JErsatz insert(Ersatz row)

Description copied from interface: Store

Creates a new record in the store.

Specified by:

insert in interface Store<Ersatz,Neo4JErsatz>

Parameters:

row - inserted object description

Returns:

saved object corresponding to toInsert

update

public void update(Ersatz newValues,
                   Neo4JErsatz neoErsatz)

Description copied from interface: Store

Update record with the given values.

Specified by:

update in interface Store<Ersatz,Neo4JErsatz>

Parameters:

newValues - new values, can be partial ersatz

neoErsatz - ersatz representing record to be updated

delete

public void delete(Neo4JErsatz neoErsatz)

Description copied from interface: Store

Delete record from the store.

Specified by:

delete in interface Store<Ersatz,Neo4JErsatz>

Parameters:

neoErsatz - ersatz representing record to be deleted

newPrimaryKey

public Ersatz newPrimaryKey()

Description copied from interface: Store

Generate new primary key.

Specified by:

newPrimaryKey in interface Store<Ersatz,Neo4JErsatz>

Returns:

primary key partial ersatz

query

public Cursor<Neo4JErsatz> query(EOQualifier q)

Description copied from interface: Store

Query for records matching EO qualifier.

Specified by:

query in interface Store<Ersatz,Neo4JErsatz>

Parameters:

q - qualifier

Returns:

query results

validateEntity

protected static void validateEntity(EOEntity entity)
                              throws UnsupportedEntityException

Throws:

UnsupportedEntityException