私は以下のようにLeague
ノードエンティティを持っています
@NodeEntity
class League
{
private Date startDate;
}
シェルから実行したときに以下のサイファーが正常に機能している最新のリーグを返したい
START n=node(*) WHERE has(n.__type__) and n.__type__='com.aravind.avl.domain.League' RETURN n ORDER BY n.startDate ASC LIMIT 1
これを以下のようにリポジトリに移動しました
public interface LeagueRepository extends GraphRepository<League>
{
@Query ("START n=node(*) RETURN n ORDER BY n.startDate DESC LIMIT 1")
League findCurrentLeague();
}
以下のエラーが表示されます。__type__
リポジトリを使用する場合のように、spring-data-neo4j 実装の詳細を提供する必要はないと思います。spring-data-neo4j 実装の詳細を公開せずに、リポジトリにクエリを正しく書き込む方法を知りたいですか?
ジュニット
@Test
public void findCurrentLeague() throws ParseException
{
SimpleDateFormat df = new SimpleDateFormat("dd/MM/yyyy");
League l1 = new League();
l1.setStartDate(df.parse("01/03/2013"));
l1.setEndDate(new Date());
l1.setName("in year 2013");
League l2 = new League();
l2.setStartDate(df.parse("01/03/2001"));
l2.setEndDate(df.parse("01/10/2001"));
l2.setName("in year 2001");
repo.save(l1);
repo.save(l2);
League currentLeague = repo.findCurrentLeague();
assertNotNull(currentLeague);
assertEquals("in year 2013", currentLeague.getName());
}
エラー
Caused by: org.springframework.dao.InvalidDataAccessResourceUsageException: Error executing statement START n=node(*) RETURN n ORDER BY n.startDate DESC LIMIT 1; nested exception is org.neo4j.cypher.EntityNotFoundException: The property 'startDate' does not exist on Node[0]
at org.springframework.data.neo4j.support.query.CypherQueryEngine.parseAndExecuteQuery(CypherQueryEngine.java:63)
at org.springframework.data.neo4j.support.query.CypherQueryEngine.query(CypherQueryEngine.java:49)
... 39 more
Caused by: org.neo4j.cypher.EntityNotFoundException: The property 'startDate' does not exist on Node[0]
at org.neo4j.cypher.internal.commands.expressions.Property.apply(Property.scala:35)
at org.neo4j.cypher.internal.commands.expressions.Property.apply(Property.scala:29)
at org.neo4j.cypher.internal.pipes.ExtractPipe$$anonfun$createResults$1$$anonfun$apply$1.apply(ExtractPipe.scala:37)
at org.neo4j.cypher.internal.pipes.ExtractPipe$$anonfun$createResults$1$$anonfun$apply$1.apply(ExtractPipe.scala:35)
at scala.collection.immutable.Map$Map1.foreach(Map.scala:118)
at org.neo4j.cypher.internal.pipes.ExtractPipe$$anonfun$createResults$1.apply(ExtractPipe.scala:35)
at org.neo4j.cypher.internal.pipes.ExtractPipe$$anonfun$createResults$1.apply(ExtractPipe.scala:34)
at scala.collection.Iterator$$anon$19.next(Iterator.scala:335)
at org.neo4j.cypher.internal.pipes.TopPipe.createResults(TopPipe.scala:45)
at org.neo4j.cypher.internal.pipes.ColumnFilterPipe.createResults(ColumnFilterPipe.scala:37)
at org.neo4j.cypher.internal.executionplan.ExecutionPlanImpl$$anonfun$6.apply(ExecutionPlanImpl.scala:127)
at org.neo4j.cypher.internal.executionplan.ExecutionPlanImpl$$anonfun$6.apply(ExecutionPlanImpl.scala:125)
at org.neo4j.cypher.internal.executionplan.ExecutionPlanImpl.execute(ExecutionPlanImpl.scala:33)
at org.neo4j.cypher.ExecutionEngine.execute(ExecutionEngine.scala:59)
at org.neo4j.cypher.ExecutionEngine.execute(ExecutionEngine.scala:63)
at org.neo4j.cypher.javacompat.ExecutionEngine.execute(ExecutionEngine.java:79)
at org.springframework.data.neo4j.support.query.CypherQueryEngine.parseAndExecuteQuery(CypherQueryEngine.java:61)
... 40 more
Caused by: org.neo4j.graphdb.NotFoundException: 'startDate' property not found for NodeImpl#0.