com.sap.cds.services.impl.persistence

Class NullElementValidator

java.lang.Object

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

All Implemented Interfaces:

EventHandler

Direct Known Subclasses:

MandatoryHandler, NotNullHandler

public abstract class NullElementValidator
extends Object
implements EventHandler

Handler helper class to check not null or mandatory elements.

Constructor Summary

Constructors

Constructor and Description
NullElementValidator()

Method Summary

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

NullElementValidator

public NullElementValidator()

Method Detail

runCheck

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

checkNull

public boolean checkNull(com.sap.cds.reflect.CdsElement element)

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

Parameters:

element - the element to validate

Returns:

true, if the element is not allowed to be null

check

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

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

Parameters:

element - the element to validate

Returns:

true, if the element is not allowed to be null

isNull

protected abstract boolean isNull(Object obj)

Returns true, if the object is considered to be null

Parameters:

obj - the object to validate

Returns:

true, if the object is considered to be null