1
我已經在Neo4j網絡界面中測試了我的查詢,現在我想將它添加到我的Java程序中。spring-data-neo4j不會將參數代入@Query
@Query("START n=({self}) MATCH (n)-->(x)<--(y) RETURN y")
private Iterable<Track> alternativeTracks;
而且也這樣(在GraphRepository擴展接口):我曾經嘗試這樣做(在名爲跟蹤一個@NodeEntity類)
@Query("START n={track} MATCH (n)-->(x)<--(y) RETURN y")
public Iterable<Track> findAlternativeTracks(@Param("track") Track track);
和位置版本太多:
但每次我得到這個異常和痕跡:
Exception in thread "main" org.neo4j.rest.graphdb.RestResultException: expected either node or relationship here
"START n=({self}) MATCH (n)-->(x)<--(y) RETURN y"
^at
SyntaxException
org.neo4j.cypher.internal.parser.v1_8.CypherParserImpl.parse(CypherParserImpl.scala:45)
org.neo4j.cypher.CypherParser.parse(CypherParser.scala:42)
org.neo4j.cypher.ExecutionEngine$$anonfun$prepare$1.apply(ExecutionEngine.scala:67)
org.neo4j.cypher.ExecutionEngine$$anonfun$prepare$1.apply(ExecutionEngine.scala:67)
org.neo4j.cypher.internal.LRUCache.getOrElseUpdate(LRUCache.scala:37)
org.neo4j.cypher.ExecutionEngine.prepare(ExecutionEngine.scala:67)
org.neo4j.cypher.ExecutionEngine.execute(ExecutionEngine.scala:59)
org.neo4j.cypher.ExecutionEngine.execute(ExecutionEngine.scala:63)
org.neo4j.cypher.javacompat.ExecutionEngine.execute(ExecutionEngine.java:79)
org.neo4j.server.rest.web.CypherService.cypher(CypherService.java:67)
java.lang.reflect.Method.invoke(Method.java:597)
根據我正在嘗試的版本,將「自我」替換爲「曲目」或「0」。
我一直在遍歷文檔和示例,但我似乎無法弄清楚我在這裏錯過了什麼。任何人都可以啓發我嗎?
(我在彈簧數據Neo4j的版本2.2.1.RELEASE)