Package com.sap.cds.util

Class CdsModelUtils

java.lang.Object

com.sap.cds.util.CdsModelUtils

public class CdsModelUtils
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	CdsModelUtils.CascadeType

Method Summary

Modifier and Type	Method	Description
static Set<String>	assocKeys(CdsElement forwardMappedAssoc)
static CdsVersion	compilerVersion(CdsModel model)
static Set<String>	concreteKeyNames(CdsStructuredType type)
static CdsElement	element(CdsStructuredType struct, CqnElementRef ref)
static CdsElement	element(CdsStructuredType struct, List<? extends CqnReference.Segment> segments)
static List<CdsEntity>	entities(CdsEntity root, List<? extends CqnReference.Segment> segments)
static List<CdsEntity>	entities(CdsModel model, List<? extends CqnReference.Segment> segments)
static CdsEntity	entity(CdsEntity root, List<? extends CqnReference.Segment> segments)
static CdsEntity	entity(CdsModel model, CqnStructuredTypeRef ref)
static CdsEntity	entity(CdsModel model, List<? extends CqnReference.Segment> segments)
static Optional<CdsElement>	findElement(CdsStructuredType struct, CqnElementRef ref)
static String	getDoc(com.fasterxml.jackson.databind.JsonNode csn)
static String	getFullRefPath(CqnSelectListValue val)
static boolean	isCascading(CdsModelUtils.CascadeType cascadeType, CdsElement association)
static boolean	isContextElementRef(CqnElementRef ref)
static boolean	isKey(CdsElement element)
static boolean	isManyTo(CdsType associationElement)
static boolean	isReverseAssociation(CdsElement assoc)
static boolean	isSingleValued(CdsType associationElement)
static boolean	isToMany(CdsType associationElement)
static Set<String>	keyNames(CdsStructuredType type)
static boolean	managedToOne(CdsType associationElement)
static Stream<Map<CdsElement,List<String>>>	resolveManagedToOneAssociationMapping(CdsElement element)	Iteratively resolves every managed to-one association that is found within the provided association and its association reference mapping until only simple type elements have been reached.
static CdsStructuredType	target(CdsStructuredType root, List<? extends CqnReference.Segment> segments)
static Set<String>	targetKeys(CdsElement assoc)

Methods inherited from class java.lang.Object

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

Method Details

isSingleValued

public static boolean isSingleValued(CdsType associationElement)

isToMany

public static boolean isToMany(CdsType associationElement)

isManyTo

public static boolean isManyTo(CdsType associationElement)

managedToOne

public static boolean managedToOne(CdsType associationElement)

targetKeys

public static Set<String> targetKeys(CdsElement assoc)

assocKeys

public static Set<String> assocKeys(CdsElement forwardMappedAssoc)

isKey

public static boolean isKey(CdsElement element)

concreteKeyNames

public static Set<String> concreteKeyNames(CdsStructuredType type)

keyNames

public static Set<String> keyNames(CdsStructuredType type)

findElement

public static Optional<CdsElement> findElement(CdsStructuredType struct,
 CqnElementRef ref)

element

public static CdsElement element(CdsStructuredType struct,
 CqnElementRef ref)

element

public static CdsElement element(CdsStructuredType struct,
 List<? extends CqnReference.Segment> segments)

isContextElementRef

public static boolean isContextElementRef(CqnElementRef ref)

entities

public static List<CdsEntity> entities(CdsModel model,
 List<? extends CqnReference.Segment> segments)

entities

public static List<CdsEntity> entities(CdsEntity root,
 List<? extends CqnReference.Segment> segments)

entity

public static CdsEntity entity(CdsEntity root,
 List<? extends CqnReference.Segment> segments)

target

public static CdsStructuredType target(CdsStructuredType root,
 List<? extends CqnReference.Segment> segments)

entity

public static CdsEntity entity(CdsModel model,
 List<? extends CqnReference.Segment> segments)

entity

public static CdsEntity entity(CdsModel model,
 CqnStructuredTypeRef ref)

isReverseAssociation

public static boolean isReverseAssociation(CdsElement assoc)

compilerVersion

public static CdsVersion compilerVersion(CdsModel model)

getDoc

public static String getDoc(com.fasterxml.jackson.databind.JsonNode csn)

isCascading

public static boolean isCascading(CdsModelUtils.CascadeType cascadeType,
 CdsElement association)

getFullRefPath

public static String getFullRefPath(CqnSelectListValue val)

resolveManagedToOneAssociationMapping

public static Stream<Map<CdsElement,List<String>>> resolveManagedToOneAssociationMapping(CdsElement element)

Iteratively resolves every managed to-one association that is found within the provided association and its association reference mapping until only simple type elements have been reached. The ref id paths towards these transitively targeted simple type elements are kept track of and returned together with these elements in a stream of maps. The resolution of these managed to-one associations potentially constructs a multi-level tree of ref id paths with the ref id of the provided CDS element as the root node and the transitively targeted (simple type) elements as leaf nodes. Each map of the stream contains the leaf node element as key and its respective ref id path as value.

Parameters:

element - an association or simple type element

Returns:

a stream of transitively targeted simple type elements and their respective ref id paths derived from the provided CDS element and its association mapping