com.sap.cds.services.impl.utils

Class ValidatorUtils

java.lang.Object

com.sap.cds.services.impl.utils.ValidatorUtils

public class ValidatorUtils
extends Object

Validation utilities.

Constructor Summary

Constructors

Constructor and Description
ValidatorUtils()

Method Summary

Modifier and Type	Method and Description
static void	handleValidationError(EventContext context, CdsErrorStatuses statuses, Object... args) Handles the given CdsErrorStatuses by either generating an error message or throwing a ErrorStatusException.
static boolean	isNullNotAllowed(com.sap.cds.reflect.CdsElement element, Predicate<com.sap.cds.reflect.CdsElement> isNullNotAllowed) Checks whether the given cds element is not allowed to be null.
static void	runNullElementCheck(EventContext context, Predicate<Object> isNull, Predicate<com.sap.cds.reflect.CdsElement> isNullNotAllowed, BiConsumer<Map.Entry<com.sap.cds.reflect.CdsElement,com.sap.cds.reflect.CdsElement>,com.sap.cds.reflect.CdsStructuredType> errorHandler) Generic method that checks a given event context for null elements, utilizing the provided functions for the null element validation and the provided error handler in case of a failed validation.

Methods inherited from class java.lang.Object

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

Constructor Detail

ValidatorUtils

public ValidatorUtils()

Method Detail

runNullElementCheck

public static void runNullElementCheck(EventContext context,
                                       Predicate<Object> isNull,
                                       Predicate<com.sap.cds.reflect.CdsElement> isNullNotAllowed,
                                       BiConsumer<Map.Entry<com.sap.cds.reflect.CdsElement,com.sap.cds.reflect.CdsElement>,com.sap.cds.reflect.CdsStructuredType> errorHandler)

Generic method that checks a given event context for null elements, utilizing the provided functions for the null element validation and the provided error handler in case of a failed validation.

Parameters:

context - the event context

isNull - predicate that returns true if the provided object is null

isNullNotAllowed - predicate that returns true if the provided CDS element is not allowed to be null

errorHandler - handles the error if validation fails

isNullNotAllowed

public static boolean isNullNotAllowed(com.sap.cds.reflect.CdsElement element,
                                       Predicate<com.sap.cds.reflect.CdsElement> isNullNotAllowed)

Checks whether the given cds element is not allowed to be null.

Parameters:

element - the element to validate

isNullNotAllowed - a predicate that returns true if the given cds element is not allowed to be null

Returns:

true, if the element is not allowed to be null

handleValidationError

public static void handleValidationError(EventContext context,
                                         CdsErrorStatuses statuses,
                                         Object... args)

Handles the given CdsErrorStatuses by either generating an error message or throwing a ErrorStatusException.

Parameters:

context - the event context

statuses - the cds error status

args - message args