com.sap.cds.services.impl.persistence

Class NotNullHandler

java.lang.Object

com.sap.cds.services.impl.persistence.NullElementValidator

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

All Implemented Interfaces:

EventHandler

public class NotNullHandler
extends NullElementValidator

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 boolean	check(com.sap.cds.reflect.CdsElement element) Returns true, if the element is not allowed to be null
protected boolean	isNull(Object obj) Returns true, if the object is considered to be null

Methods inherited from class com.sap.cds.services.impl.persistence.NullElementValidator

checkNull, runCheck

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

check

protected boolean check(com.sap.cds.reflect.CdsElement element)

Description copied from class: NullElementValidator

Returns true, if the element is not allowed to be null

Specified by:

check in class NullElementValidator

Parameters:

element - the element to validate

Returns:

true, if the element is not allowed to be null

isNull

protected boolean isNull(Object obj)

Description copied from class: NullElementValidator

Returns true, if the object is considered to be null

Specified by:

isNull in class NullElementValidator

Parameters:

obj - the object to validate

Returns:

true, if the object is considered to be null