Package dev.morphia

Interface ObjectFactory

public interface ObjectFactory

The ObjectFactory is used by morphia to create instances of classes which can be customized to fit a particular applications needs.

Method Summary

Modifier and Type	Method	Description
Object	createInstance(Mapper mapper, PropertyModel mf, Document document)	Creates an instance of the class defined in the discriminator field in the document passed in.
<T> T	createInstance(Class<T> clazz)	Creates an instance of the given class.
<T> T	createInstance(Class<T> clazz, Document document)	Creates an instance of the class defined in the discriminator field in the document passed in.
List	createList(PropertyModel mf)	Defines how morphia creates a List object.
Map	createMap(PropertyModel mf)	Defines how morphia creates a Map object.
Set	createSet(PropertyModel mf)	Defines how morphia creates a Set object.

Method Detail

createInstance

<T> T createInstance(Class<T> clazz)

Creates an instance of the given class.

Type Parameters:

T - the type of the entity

Parameters:

clazz - type class to instantiate

Returns:

the new instance

createInstance

<T> T createInstance(Class<T> clazz,
                     Document document)

Creates an instance of the class defined in the discriminator field in the document passed in. If that field is missing, the given Class is used instead.

Type Parameters:

T - the type of the entity

Parameters:

clazz - type class to instantiate

document - the state to populate the new instance with

Returns:

the new instance

createInstance

Object createInstance(Mapper mapper,
                      PropertyModel mf,
                      Document document)

Creates an instance of the class defined in the discriminator field in the document passed in. If that field is missing, morphia attempts to the MappedField to determine which concrete class to instantiate.

Parameters:

mapper - the Mapper to use

mf - the MappedField to consult when creating the instance

document - the state to populate the new instance with

Returns:

the new instance

createList

List createList(PropertyModel mf)

Defines how morphia creates a List object.

Parameters:

mf - the MappedField containing any metadata that might define the type of the List to create

Returns:

the List

createMap

Map createMap(PropertyModel mf)

Defines how morphia creates a Map object.

Parameters:

mf - the MappedField containing any metadata that might define the type of the Map to create

Returns:

the Map

createSet

Set createSet(PropertyModel mf)

Defines how morphia creates a Set object.

Parameters:

mf - the MappedField containing any metadata that might define the type of the Set to create

Returns:

the Set