Package dev.morphia.mapping.experimental

Class SingleReference<T>

java.lang.Object

dev.morphia.mapping.experimental.MorphiaReference<T>

dev.morphia.mapping.experimental.SingleReference<T>

Type Parameters:

T -

public class SingleReference<T>
extends MorphiaReference<T>

Developer note.

This is an internal item. Its function and presence are subject to change without warning. Its use is highly discouraged.

Constructor Summary

Constructors

Constructor	Description
SingleReference(Datastore datastore, MappedClass mappedClass, Object id)

Method Summary

Modifier and Type	Method	Description
static MorphiaReference<?>	decode(Datastore datastore, Mapper mapper, MappedField mappedField, Class paramType, org.bson.Document document)	Decodes a document in to an entity
Object	encode(Mapper mapper, Object value, MappedField optionalExtraInfo)
T	get()
List<Object>	getIds()
Class<T>	getType()

Methods inherited from class dev.morphia.mapping.experimental.MorphiaReference

equals, hashCode, ignoreMissing, ignoreMissing, isResolved, resolve, wrap

Methods inherited from class java.lang.Object

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

Constructor Detail

SingleReference

public SingleReference(Datastore datastore,
                       MappedClass mappedClass,
                       Object id)

Parameters:

datastore - the datastore to use

mappedClass - the entity's mapped class

id - the ID value

Developer note.

This is an internal item. Its function and presence are subject to change without warning. Its use is highly discouraged.

Method Detail

decode

public static MorphiaReference<?> decode(Datastore datastore,
                                         Mapper mapper,
                                         MappedField mappedField,
                                         Class paramType,
                                         org.bson.Document document)

Decodes a document in to an entity

Parameters:

datastore - the datastore

mapper - the mapper

mappedField - the MappedField

paramType - the type of the underlying entity

document - the Document to decode

Returns:

the entity

get

public T get()

Specified by:

get in class MorphiaReference<T>

Returns:

returns the referenced entity if it exists. May return null.

getType

public Class<T> getType()

Specified by:

getType in class MorphiaReference<T>

Returns:

the referenced type

getIds

public List<Object> getIds()

Specified by:

getIds in class MorphiaReference<T>

Returns:

the referenced IDs

encode

public Object encode(Mapper mapper,
                     Object value,
                     MappedField optionalExtraInfo)

Specified by:

encode in class MorphiaReference<T>

Parameters:

mapper - the mapper

value - the value

optionalExtraInfo - the MappedField

Returns:

the encoded vale