可有什麼不對這個暗號查詢的Cypher查詢返回空值,即使該模式是在數據庫
MATCH (owner:SidNode)<-[:OWNED_BY]-(acl:AclNode)-[:SECURES]->(class:ClassNode)
OPTIONAL MATCH (acl)<-[:COMPOSES]-(ace:AceNode)-[:AUTHORIZES]->(sid:SidNode)
WITH acl, ace, owner, sid, class
WHERE (acl.objectIdIdentity = {objectIdIdentity1} AND class.className = {className1})
RETURN
owner.principal AS aclPrincipal,
owner.sid AS aclSid,
acl.objectIdIdentity AS objectIdIdentity,
ace.aceOrder AS aceOrder,
ID(acl) AS aclId,
acl.parentObject AS parentObject,
acl.entriesInheriting AS entriesInheriting,
ID(ace) AS aceId, ace.mask AS mask,
ace.granting AS granting,
ace.auditSuccess AS auditSuccess,
ace.auditFailure AS auditFailure,
sid.principal AS acePrincipal,
sid.sid AS aceSid,
class.className AS className
ORDER BY acl.objectIdIdentity ASC, ace.aceOrder ASC
它返回空值王牌即使在圖形數據庫提供多個節點的節點。 但有些時候,如果數據庫中有4個ace節點,它會返回像4行一樣的適當值。 代碼我寫的關於春天的安全ACL 參考鏈接: https://github.com/shazin/spring-security-acl-neo4j/blob/master/src/main/java/org/springframework/security/acls/neo4j/Neo4jLookupStrategy.java
請提出修改意見。