Package com.sap.cds.services.impl.utils

Class CdsServiceUtils

java.lang.Object

com.sap.cds.services.impl.utils.CdsServiceUtils

public class CdsServiceUtils
extends Object

Utility class for CDS Services

Constructor Summary

Constructors

Constructor	Description
CdsServiceUtils()

Method Summary

Modifier and Type	Method	Description
static PersistenceService	getDefaultPersistenceService(EventContext context)	Returns the default persistence service.
static List<Map<String,Object>>	getEntities(EventContext context)	Returns the list of entity maps present in the EventContext.
static List<Map<String,Object>>	getEntitiesResolved(EventContext context)	Returns the list of entity maps present in the EventContext.
static EventContextSPI	getEventContextSPI(EventContext eventContext)	Returns the EventContext casted to the EventContextSPI
static com.sap.cds.Result	getResult(EventContext context)	Returns the Result present in the EventContext.
static ServiceSPI	getServiceSPI(Service service)	Returns the Service casted to the ServiceSPI
static Class<?>	getServiceType(Service service)	Returns the non-dynamic type of the Service, if possible.

Methods inherited from class java.lang.Object

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

Constructor Details

CdsServiceUtils

public CdsServiceUtils()

Method Details

getDefaultPersistenceService

public static PersistenceService getDefaultPersistenceService(EventContext context)

Returns the default persistence service.

Parameters:

context - the current context

Returns:

the default persistence service

getServiceSPI

public static ServiceSPI getServiceSPI(Service service)

Returns the Service casted to the ServiceSPI

Parameters:

service - the Service to be casted

Returns:

the Service casted to the ServiceSPI, or null

getServiceType

public static Class<?> getServiceType(Service service)

Returns the non-dynamic type of the Service, if possible. If the service is a typed proxy, the generated interface is returned.

Parameters:

service - the Service

Returns:

the best guess type of the Service

getEntities

public static List<Map<String,Object>> getEntities(EventContext context)

Returns the list of entity maps present in the EventContext. This method only works for CqnService.EVENT_CREATE, CqnService.EVENT_UPDATE and CqnService.EVENT_UPSERT. It inspects the CQN of these events and returns the entity data from it.

Parameters:

context - the EventContext

Returns:

the list of entity maps available in the CQN of the EventContext

getEntitiesResolved

public static List<Map<String,Object>> getEntitiesResolved(EventContext context)

Returns the list of entity maps present in the EventContext. This method only works for CqnService.EVENT_CREATE, CqnService.EVENT_UPDATE and CqnService.EVENT_UPSERT. It inspects the CQN of these events and returns the entity data from it. In contrast to {link getEntities(EventContext) the data also contains the resolved foreign keys from parent entities in path expressions.

Parameters:

context - the EventContext

Returns:

the list of entity maps available in the CQN of the EventContext

getResult

public static com.sap.cds.Result getResult(EventContext context)

Returns the Result present in the EventContext. This method only works for the default CRUD events.

Parameters:

context - the EventContext

Returns:

the Result present in the EventContext

getEventContextSPI

public static EventContextSPI getEventContextSPI(EventContext eventContext)

Returns the EventContext casted to the EventContextSPI

Parameters:

eventContext - the EventContext to be casted

Returns:

the Service casted to the EventContextSPI, or null