Package io.jmix.eclipselink.impl

Class EclipselinkReferenceIdProvider

java.lang.Object

io.jmix.eclipselink.impl.EclipselinkReferenceIdProvider

All Implemented Interfaces:

ReferenceIdProvider

@Component("eclipselink_EclipselinkReferenceIdProvider")
public class EclipselinkReferenceIdProvider
extends Object
implements ReferenceIdProvider

Utility class to provide common functionality related to persistence.
Implemented as Spring bean to allow extension in application projects.

Nested Class Summary

Nested classes/interfaces inherited from interface io.jmix.data.ReferenceIdProvider

ReferenceIdProvider.RefId

Field Summary

Fields

Modifier and Type	Field	Description
protected javax.persistence.EntityManager	entityManager
protected EntityStates	entityStates
protected Metadata	metadata
protected MetadataTools	metadataTools

Constructor Summary

Constructors

Constructor	Description
EclipselinkReferenceIdProvider()

Method Summary

Modifier and Type	Method	Description
ReferenceIdProvider.RefId	getReferenceId(Object entity, String property)	Returns an ID of directly referenced entity without loading it from DB.

Methods inherited from class java.lang.Object

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

Field Details

entityStates

@Autowired
protected EntityStates entityStates

metadata

@Autowired
protected Metadata metadata

metadataTools

@Autowired
protected MetadataTools metadataTools

entityManager

protected javax.persistence.EntityManager entityManager

Constructor Details

EclipselinkReferenceIdProvider

public EclipselinkReferenceIdProvider()

Method Details

getReferenceId

public ReferenceIdProvider.RefId getReferenceId(Object entity,
 String property)

Description copied from interface: ReferenceIdProvider

Returns an ID of directly referenced entity without loading it from DB.

If the fetchPlan does not contain the reference and FetchPlan.loadPartialEntities() is true, the returned ReferenceIdProvider.RefId will have ReferenceIdProvider.RefId.isLoaded() = false.

Usage example:

   ReferenceIdProvider.RefId refId = referenceIdProvider.getReferenceId(doc, "currency");
   if (refId.isLoaded()) {
       String currencyCode = (String) refId.getValue();
   }
 

Specified by:

getReferenceId in interface ReferenceIdProvider

Parameters:

entity - entity instance in managed state

property - name of reference property

Returns:

ReferenceIdProvider.RefId instance which contains the referenced entity ID