com.sap.cds.services.impl.persistence

Class NotNullHandler

java.lang.Object

com.sap.cds.services.impl.persistence.NotNullHandler

All Implemented Interfaces:

EventHandler

public class NotNullHandler
extends Object
implements EventHandler

Handler class to check not null elements. Adding not null to an element leads to a database constraint check. This handler is mainly there to improve the error message in case such an element is set to null

Constructor Summary

Constructors

Constructor and Description
NotNullHandler()

Method Summary

Modifier and Type	Method and Description
protected Predicate<com.sap.cds.reflect.CdsElement>	isNullNotAllowed() Function that checks whether the specified cds element is not allowed to be null.
void	runCheck(EventContext context)

Methods inherited from class java.lang.Object

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

Constructor Detail

NotNullHandler

public NotNullHandler()

Method Detail

runCheck

@HandlerOrder(value=11100)
public void runCheck(EventContext context)

isNullNotAllowed

protected Predicate<com.sap.cds.reflect.CdsElement> isNullNotAllowed()

Function that checks whether the specified cds element is not allowed to be null.

Returns:

true, if cds element is not allowed to be null