0
有一些問題CYPHER查詢和數字指標Neo4j和spring-data:數字索引密碼查詢不起作用?
@Indexed(unique = true, numeric = false)
private Long accountId;
返回:
neo4j-sh (0)$ start n=node:Principal(accountId = '1') return n;
+---------------------------------------------------------------------------------------------+
| n |
+---------------------------------------------------------------------------------------------+
| Node[41722]{__type__:"example.package.Principal",accountId:1,name:"Simple User"} |
+---------------------------------------------------------------------------------------------+
1 row
但
@Indexed(unique = true, numeric = true)
private Long accountId;
返回:
neo4j-sh (0)$ start n=node:Principal(accountId = '1') return n;
+---+
| n |
+---+
+---+
0 row
Neo4j的1.9.2
彈簧數據的Neo4j 2.3.0.RC1
如果我正確理解這可能是ralted這discussion,但它是很老?
UPDATE:
如果我使用
@Indexed(unique = true, numeric = false)
另一個有趣的事情發生了。檢查是否存在關係(它actualy在分貝存在):
計數(r)是等於0 - 不正確的:
Long accountId = 1L;
Map<String, Object> result = template.query(
"START child=node:Principal(accountId='{childId}') " +
"MATCH child-[r:IS_MEMBER_OF]->parent " +
"RETURN count(r)", MapUtil.map("childId", accountId)).singleOrNull();
計數(r)是等於1 - 正確的:
Long accountId = 1L;
Map<String, Object> result = template.query(
"START child=node:Principal(accountId='1') " +
"MATCH child-[r:IS_MEMBER_OF]->parent " +
"RETURN count(r)",null).singleOrNull();
還有一個問題,我是否正確承認這一點,如果我使用@Indexed(unique = true,numeric = true),那麼我不能從neo4j控制檯/ Neoeclipse執行密碼查詢? – gerasalus