org.springframework.data.neo4j.repository.query

Class Neo4jSpelSupport

java.lang.Object

org.springframework.data.neo4j.repository.query.Neo4jSpelSupport

@API(status=INTERNAL,
     since="6.0.2")
public final class Neo4jSpelSupport
extends Object

This class provides a couple of extensions to the Spring Data Neo4j SpEL support and is registered by the appropriate repository factories as a root bean.

Since:

6.0.2

Author:

Michael J. Simons

Field Summary

Fields

Modifier and Type	Field and Description
static String	FUNCTION_LITERAL
static String	FUNCTION_ORDER_BY

Constructor Summary

Constructors

Constructor and Description
Neo4jSpelSupport()

Method Summary

Modifier and Type	Method and Description
static org.springframework.data.neo4j.repository.query.Neo4jSpelSupport.LiteralReplacement	literal(Object arg) Turns the arguments of this function into a literal replacement for the SpEL placeholder (instead of creating Cypher parameters).
static org.springframework.data.neo4j.repository.query.Neo4jSpelSupport.LiteralReplacement	orderBy(Object arg) Takes arg and tries to either extract a sort from it or cast it to a sort.

Methods inherited from class java.lang.Object

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

Field Detail

FUNCTION_LITERAL

public static String FUNCTION_LITERAL

FUNCTION_ORDER_BY

public static String FUNCTION_ORDER_BY

Constructor Detail

Neo4jSpelSupport

public Neo4jSpelSupport()

Method Detail

orderBy

public static org.springframework.data.neo4j.repository.query.Neo4jSpelSupport.LiteralReplacement orderBy(@Nullable
                                                                                                          Object arg)

Takes arg and tries to either extract a sort from it or cast it to a sort. That sort is than past to the CypherGenerator that renders a valid order by fragment which replaces the SpEL placeholder without further validation whether it's attributes are in the query or similar literal.

Parameters:

arg - The sort object to order the result set of the final query.

Returns:

A literal replacement for a SpEL placeholder

literal

public static org.springframework.data.neo4j.repository.query.Neo4jSpelSupport.LiteralReplacement literal(@Nullable
                                                                                                          Object arg)

Turns the arguments of this function into a literal replacement for the SpEL placeholder (instead of creating Cypher parameters).

Parameters:

arg - The object that will be inserted as a literal String into the query. It's toString() method will be used.

Returns:

A literal replacement for a SpEL placeholder