Package org.springframework.data.mongodb.core.convert

Class ReferenceLookupDelegate

java.lang.Object

org.springframework.data.mongodb.core.convert.ReferenceLookupDelegate

public final class ReferenceLookupDelegate
extends Object

A common delegate for ReferenceResolver implementations to resolve a reference to one/many target documents that are converted to entities.

Since:

3.3

Author:

Christoph Strobl, Mark Paluch

Constructor Summary

Constructors

Constructor	Description
ReferenceLookupDelegate(MappingContext<? extends MongoPersistentEntity<?>,MongoPersistentProperty> mappingContext, SpELContext spELContext)	Create a new ReferenceLookupDelegate.

Method Summary

Modifier and Type	Method	Description
Object	readReference(MongoPersistentProperty property, Object source, org.springframework.data.mongodb.core.convert.ReferenceLookupDelegate.LookupFunction lookupFunction, ReferenceResolver.MongoEntityReader entityReader)	Read the reference expressed by the given property.

Methods inherited from class java.lang.Object

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

Constructor Details

ReferenceLookupDelegate

public ReferenceLookupDelegate(MappingContext<? extends MongoPersistentEntity<?>,MongoPersistentProperty> mappingContext,
 SpELContext spELContext)

Create a new ReferenceLookupDelegate.

Parameters:

mappingContext - must not be null.

spELContext - must not be null.

Method Details

readReference

@Nullable
public Object readReference(MongoPersistentProperty property,
 Object source,
 org.springframework.data.mongodb.core.convert.ReferenceLookupDelegate.LookupFunction lookupFunction,
 ReferenceResolver.MongoEntityReader entityReader)

Read the reference expressed by the given property.

Parameters:

property - the reference defining property. Must not be null. THe

source - the source value identifying to the referenced entity. Must not be null.

lookupFunction - to execute a lookup query. Must not be null.

entityReader - the callback to convert raw source values into actual domain types. Must not be null.

Returns:

can be null.