Package org.springframework.data.neo4j.core.mapping

Class IdentitySupport

java.lang.Object

org.springframework.data.neo4j.core.mapping.IdentitySupport

@API(status=INTERNAL)
public final class IdentitySupport
extends Object

This class is not part of any public API and will be changed without further notice as needed. It's primary goal is to mitigate the changes in Neo4j5, which introduces the notion of an element id for both nodes and relationships while deprecating id at the same time. The identity support allows to isolate our calls deprecated API in one central place and will exists for SDN 7 only to make SDN 7 work with both Neo4j 4.4 and Neo4j 5.x.

Since:

7.0

Author:

Michael J. Simons

Method Summary

Modifier and Type	Method	Description
static Long	getEndId(org.neo4j.driver.types.Relationship relationship)	Returns the end id of the relationship
static Long	getInternalId(org.neo4j.driver.types.Entity entity)
static Long	getInternalId(org.neo4j.driver.types.MapAccessor row)	Retrieves an identity either from attributes inside the row or if it is an actual entity, with the dedicated accessors.
static String	getInternalId(org.neo4j.driver.types.MapAccessor queryResult, String seed)
static Long	getInternalId(org.neo4j.driver.types.TypeSystem typeSystem, org.neo4j.driver.Record row)
static Long	getStartId(org.neo4j.driver.types.Relationship relationship)	Returns the start id of the relationship
static void	updateInternalId(Neo4jPersistentEntity<?> entityMetaData, PersistentPropertyAccessor<?> propertyAccessor, org.neo4j.driver.types.Entity entity)	Updates the internal id of a given client side entity from a server side entity using a property accessor.

Methods inherited from class java.lang.Object

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

Method Details

updateInternalId

public static void updateInternalId(Neo4jPersistentEntity<?> entityMetaData,
 PersistentPropertyAccessor<?> propertyAccessor,
 org.neo4j.driver.types.Entity entity)

Updates the internal id of a given client side entity from a server side entity using a property accessor. Does nothing if the local entity does not use internally generated ids.

Parameters:

entityMetaData - The entity's meta data

propertyAccessor - An accessor to the entity

entity - As received via the driver

getInternalId

public static Long getInternalId(org.neo4j.driver.types.Entity entity)

Parameters:

entity - The entity container as received from the server.

Returns:

The internal id

getInternalId

@Nullable
public static Long getInternalId(@NonNull
 org.neo4j.driver.types.MapAccessor row)

Retrieves an identity either from attributes inside the row or if it is an actual entity, with the dedicated accessors.

Parameters:

row - A query result row

Returns:

An internal id

getInternalId

@Nullable
public static String getInternalId(@NonNull
 org.neo4j.driver.types.MapAccessor queryResult,
 @Nullable
 String seed)

getStartId

public static Long getStartId(org.neo4j.driver.types.Relationship relationship)

Returns the start id of the relationship

Parameters:

relationship - A relationship to retrieve the start identity

Returns:

An internal id

getEndId

public static Long getEndId(org.neo4j.driver.types.Relationship relationship)

Returns the end id of the relationship

Parameters:

relationship - A relationship to retrieve the end identity

Returns:

An internal id

getInternalId

public static Long getInternalId(org.neo4j.driver.types.TypeSystem typeSystem,
 org.neo4j.driver.Record row)