org.hibernate.ogm.datastore.neo4j

Class Neo4jDialect

java.lang.Object

org.hibernate.ogm.datastore.neo4j.Neo4jDialect

All Implemented Interfaces:

Serializable, GridDialect, org.hibernate.service.Service, org.hibernate.service.spi.ServiceRegistryAwareService

public class Neo4jDialect
extends Object
implements GridDialect, org.hibernate.service.spi.ServiceRegistryAwareService

Abstracts Hibernate OGM from Neo4j.

A Tuple is saved as a Node where the columns are converted into properties of the node.
An Association is converted into a Relationship identified by the AssociationKey and the RowKey. The type of the relationship is the value returned by AssociationKey.getCollectionRole().

If the value of a property is set to null the property will be removed (Neo4j does not allow to store null values).

Author:

Davide D'Alto <davide@hibernate.org>

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Neo4jDialect(Neo4jDatastoreProvider provider)

Method Summary

Methods

Modifier and Type	Method and Description
Association	createAssociation(AssociationKey associationKey, AssociationContext associationContext)
Tuple	createTuple(EntityKey key, TupleContext tupleContext)
Tuple	createTupleAssociation(AssociationKey associationKey, RowKey rowKey)
ClosableIterator<Tuple>	executeBackendQuery(BackendCustomQuery customQuery, org.hibernate.engine.spi.QueryParameters queryParameters)
void	forEachTuple(Consumer consumer, EntityKeyMetadata... entityKeyMetadatas)
Association	getAssociation(AssociationKey associationKey, AssociationContext associationContext)
org.hibernate.dialect.lock.LockingStrategy	getLockingStrategy(org.hibernate.persister.entity.Lockable lockable, org.hibernate.LockMode lockMode)
ParameterMetadataBuilder	getParameterMetadataBuilder()
Tuple	getTuple(EntityKey key, TupleContext context)
void	injectServices(org.hibernate.service.spi.ServiceRegistryImplementor serviceRegistry)
boolean	isStoredInEntityStructure(AssociationKey associationKey, AssociationContext associationContext)
Number	nextValue(NextValueRequest request)
GridType	overrideType(org.hibernate.type.Type type)
void	removeAssociation(AssociationKey key, AssociationContext associationContext)
void	removeTuple(EntityKey key, TupleContext tupleContext)
boolean	supportsSequences()
void	updateAssociation(Association association, AssociationKey key, AssociationContext associationContext)
void	updateTuple(Tuple tuple, EntityKey key, TupleContext tupleContext)

Methods inherited from class java.lang.Object

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

Constructor Detail

Neo4jDialect

public Neo4jDialect(Neo4jDatastoreProvider provider)

Method Detail

injectServices

public void injectServices(org.hibernate.service.spi.ServiceRegistryImplementor serviceRegistry)

Specified by:

injectServices in interface org.hibernate.service.spi.ServiceRegistryAwareService

getLockingStrategy

public org.hibernate.dialect.lock.LockingStrategy getLockingStrategy(org.hibernate.persister.entity.Lockable lockable,
                                                            org.hibernate.LockMode lockMode)

Specified by:

getLockingStrategy in interface GridDialect

getTuple

public Tuple getTuple(EntityKey key,
             TupleContext context)

Specified by:

getTuple in interface GridDialect

createTuple

public Tuple createTuple(EntityKey key,
                TupleContext tupleContext)

Specified by:

createTuple in interface GridDialect

updateTuple

public void updateTuple(Tuple tuple,
               EntityKey key,
               TupleContext tupleContext)

Specified by:

updateTuple in interface GridDialect

removeTuple

public void removeTuple(EntityKey key,
               TupleContext tupleContext)

Specified by:

removeTuple in interface GridDialect

createTupleAssociation

public Tuple createTupleAssociation(AssociationKey associationKey,
                           RowKey rowKey)

Specified by:

createTupleAssociation in interface GridDialect

getAssociation

public Association getAssociation(AssociationKey associationKey,
                         AssociationContext associationContext)

Specified by:

getAssociation in interface GridDialect

createAssociation

public Association createAssociation(AssociationKey associationKey,
                            AssociationContext associationContext)

Specified by:

createAssociation in interface GridDialect

updateAssociation

public void updateAssociation(Association association,
                     AssociationKey key,
                     AssociationContext associationContext)

Specified by:

updateAssociation in interface GridDialect

isStoredInEntityStructure

public boolean isStoredInEntityStructure(AssociationKey associationKey,
                                AssociationContext associationContext)

Specified by:

isStoredInEntityStructure in interface GridDialect

nextValue

public Number nextValue(NextValueRequest request)

Specified by:

nextValue in interface GridDialect

supportsSequences

public boolean supportsSequences()

Specified by:

supportsSequences in interface GridDialect

overrideType

public GridType overrideType(org.hibernate.type.Type type)

Specified by:

overrideType in interface GridDialect

removeAssociation

public void removeAssociation(AssociationKey key,
                     AssociationContext associationContext)

Specified by:

removeAssociation in interface GridDialect

forEachTuple

public void forEachTuple(Consumer consumer,
                EntityKeyMetadata... entityKeyMetadatas)

Specified by:

forEachTuple in interface GridDialect

executeBackendQuery

public ClosableIterator<Tuple> executeBackendQuery(BackendCustomQuery customQuery,
                                          org.hibernate.engine.spi.QueryParameters queryParameters)

Specified by:

executeBackendQuery in interface GridDialect

getParameterMetadataBuilder

public ParameterMetadataBuilder getParameterMetadataBuilder()

Specified by:

getParameterMetadataBuilder in interface GridDialect