com.impetus.kundera.persistence

Interface EntityReader

public interface EntityReader

The Interface EntityReader.

Author:

vivek.mishra Interface to provide declarations for methods responsible for entity read operations.(Except queries).

Method Summary

Methods

Modifier and Type	Method and Description
EnhanceEntity	findById(Object primaryKey, EntityMetadata m, Client client) Find by id.
List<EnhanceEntity>	populateRelation(EntityMetadata m, Client client, int maxResults) Method responsible for reading back entity and relations using secondary indexes(if it holds any relation), else retrieve row keys using lucene.
Object	recursivelyFindEntities(Object entity, Map<String,Object> relationsMap, EntityMetadata m, PersistenceDelegator pd, boolean lazilyLoaded, Map<Object,Object> relationStack) Returns populated entity along with all relational value.

Method Detail

populateRelation

List<EnhanceEntity> populateRelation(EntityMetadata m,
                                   Client client,
                                   int maxResults)

Method responsible for reading back entity and relations using secondary indexes(if it holds any relation), else retrieve row keys using lucene.

Parameters:

m - entity meta data

relationNames - relation names

isParent - if entity is not holding any relation.

client - client instance

Returns:

list of wrapped enhance entities.

recursivelyFindEntities

Object recursivelyFindEntities(Object entity,
                             Map<String,Object> relationsMap,
                             EntityMetadata m,
                             PersistenceDelegator pd,
                             boolean lazilyLoaded,
                             Map<Object,Object> relationStack)

Returns populated entity along with all relational value.

Parameters:

e - enhance entity

graphs - entity graph

collectionHolder - collection holder.

client - client

m - entity meta data

relationStack -

persistenceDelegeator - persistence delegator.

lazily - loaded. true if invoked over lazily fetched object.

Returns:

populate entity.

Throws:

Exception - the exception

findById

EnhanceEntity findById(Object primaryKey,
                     EntityMetadata m,
                     Client client)

Find by id.

Parameters:

primaryKey - the primary key

m - the m

relationNames - the relation names

client - the client

Returns:

the enhance entity