org.neo4j.ogm.annotations

Class EntityFactory

java.lang.Object

org.neo4j.ogm.annotations.EntityFactory

public class EntityFactory
extends Object

A metadata-driven factory class for creating node and relationship entities.

Author:

Adam George

Constructor Summary

Constructors

Constructor and Description
EntityFactory(MetaData metadata) Constructs a new EntityFactory driven by the specified MetaData.

Method Summary

Methods

Modifier and Type	Method and Description
<T> T	newObject(Class<T> clarse) Constructs a new instance of the specified class using the same logic as the graph model factory methods.
<T> T	newObject(ClassInfo classInfo) Constructs a new object based on the ClassInfo.
<T> T	newObject(Edge edgeModel) Constructs a new object based on the class mapped to the type in the given Edge.
<T> T	newObject(Node nodeModel) Constructs a new object based on the class mapped to the labels on the given Node.

Methods inherited from class java.lang.Object

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

Constructor Detail

EntityFactory

public EntityFactory(MetaData metadata)

Constructs a new EntityFactory driven by the specified MetaData.

Parameters:

metadata - The mapping MetaData

Method Detail

newObject

public <T> T newObject(Node nodeModel)

Constructs a new object based on the class mapped to the labels on the given Node. In the case of multiple labels, only the one that identifies a class in the domain will be used, and if there are any ambiguities in which label to use then an exception will be thrown.

Type Parameters:

T - The class of object to return

Parameters:

nodeModel - The Node from which to determine the type

Returns:

A new instance of the class that corresponds to the node label, never null

Throws:

MappingException - if it's not possible to resolve or instantiate a class from the given argument

newObject

public <T> T newObject(Edge edgeModel)

Constructs a new object based on the class mapped to the type in the given Edge.

Type Parameters:

T - The class of object to return

Parameters:

edgeModel - The Edge from which to determine the type

Returns:

A new instance of the class that corresponds to the relationship type, never null

Throws:

MappingException - if it's not possible to resolve or instantiate a class from the given argument

newObject

public <T> T newObject(ClassInfo classInfo)

Constructs a new object based on the ClassInfo.

Type Parameters:

T - The class of object to return

Parameters:

classInfo - The ClassInfo from which to determine the type

Returns:

A new instance of the class that corresponds to the classinfo type, never null

Throws:

MappingException - if it's not possible to resolve or instantiate a class from the given argument

newObject

public <T> T newObject(Class<T> clarse)

Constructs a new instance of the specified class using the same logic as the graph model factory methods.

Type Parameters:

T - The class of object to return

Parameters:

clarse - The class to instantiate

Returns:

A new instance of the specified Class

Throws:

MappingException - if it's not possible to instantiate the given class for any reason