org.hibernate.ogm.datastore.neo4j.impl

Class Neo4jSchemaDefiner

java.lang.Object

org.hibernate.ogm.datastore.spi.BaseSchemaDefiner

org.hibernate.ogm.datastore.neo4j.impl.Neo4jSchemaDefiner

All Implemented Interfaces:

Serializable, SchemaDefiner, org.hibernate.service.Service

public class Neo4jSchemaDefiner
extends BaseSchemaDefiner

Initialize the schema for the Neo4j database:

1. create sequences;
2. create unique constraints on identifiers, natural ids and unique columns

Note that unique constraints involving multiple columns won't be applied because Neo4j does not support it.

The creation of unique constraints can be skipped setting the property AvailableSettings.UNIQUE_CONSTRAINT_SCHEMA_UPDATE_STRATEGY to the value UniqueConstraintSchemaUpdateStrategy.SKIP. Because in Neo4j unique constraints don't have a name, setting the value to UniqueConstraintSchemaUpdateStrategy.RECREATE_QUIETLY or UniqueConstraintSchemaUpdateStrategy.DROP_RECREATE_QUIETLY will have the same effect: keep the existing constraints and create the missing one.

Author:

Davide D'Alto, Gunnar Morling

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Neo4jSchemaDefiner()

Method Summary

Modifier and Type	Method and Description
void	initializeSchema(org.hibernate.cfg.Configuration configuration, org.hibernate.engine.spi.SessionFactoryImplementor factory)

Methods inherited from class org.hibernate.ogm.datastore.spi.BaseSchemaDefiner

getAllAssociationKeyMetadata, getAllEntityKeyMetadata, getAllIdSourceKeyMetadata, getPersistentGenerators, validateMapping

Methods inherited from class java.lang.Object

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

Constructor Detail

Neo4jSchemaDefiner

public Neo4jSchemaDefiner()

Method Detail

initializeSchema

public void initializeSchema(org.hibernate.cfg.Configuration configuration,
                             org.hibernate.engine.spi.SessionFactoryImplementor factory)

Specified by:

initializeSchema in interface SchemaDefiner

Overrides:

initializeSchema in class BaseSchemaDefiner