org.neo4j.ogm.context

Class GraphEntityMapper

java.lang.Object

org.neo4j.ogm.context.GraphEntityMapper

All Implemented Interfaces:

ResponseMapper<GraphModel>

public class GraphEntityMapper
extends Object
implements ResponseMapper<GraphModel>

Author:

Vince Bickers, Luanne Misquitta, Michael J. Simons

Constructor Summary

Constructors

Constructor and Description
GraphEntityMapper(MetaData metaData, MappingContext mappingContext, EntityInstantiator entityInstantiator)

Method Summary

Modifier and Type	Method and Description
void	executePostLoad(Set<Long> nodeIds, Set<Long> edgeIds) Executes method annotated with @PostLoad on node and relationship entities with given ids This method must be executed after processing all result rows: - post load must be called after the entity is fully hydrated - to avoid executing post load multiple times on same entity
<T> List<T>	map(Class<T> type, GraphModel graphModel, Set<Long> nodeIds, Set<Long> edgeIds) Map graph model and return found entities of given type type This method doesn't execute @PostLoad, call this method after processing whole request while accumulating nodeIds and edgeIds.
<T> Iterable<T>	map(Class<T> type, Response<GraphModel> model) Maps the data representation in the given response onto instances of T.

Methods inherited from class java.lang.Object

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

Constructor Detail

GraphEntityMapper

public GraphEntityMapper(MetaData metaData,
                         MappingContext mappingContext,
                         EntityInstantiator entityInstantiator)

Method Detail

map

public <T> Iterable<T> map(Class<T> type,
                           Response<GraphModel> model)

Description copied from interface: ResponseMapper

Maps the data representation in the given response onto instances of T.

Specified by:

map in interface ResponseMapper<GraphModel>

Type Parameters:

T - type of the result

Parameters:

type - The Class defining the type to which each entities in the response should be mapped

model - The Response object containing the data to map onto the objects

Returns:

An Iterable of type T containing relevant data extracted from the response

map

public <T> List<T> map(Class<T> type,
                       GraphModel graphModel,
                       Set<Long> nodeIds,
                       Set<Long> edgeIds)

Map graph model and return found entities of given type type This method doesn't execute @PostLoad, call this method after processing whole request while accumulating nodeIds and edgeIds.

Type Parameters:

T - type

Parameters:

type - class of entities to return

graphModel - graph model to map

nodeIds - accumulator for mapped nodeIds

edgeIds - accumulator for mapped edgeIds

Returns:

list of entities matching given type

executePostLoad

public void executePostLoad(Set<Long> nodeIds,
                            Set<Long> edgeIds)

Executes method annotated with @PostLoad on node and relationship entities with given ids This method must be executed after processing all result rows: - post load must be called after the entity is fully hydrated - to avoid executing post load multiple times on same entity

Parameters:

nodeIds - nodeIds

edgeIds - edgeIds