I'll proceed with my search.
Now, I try to use index for edge, here is how I created it
OrientEdgeType edgeType = graph.createEdgeType(RelationType.RELATED.name());
edgeType.createProperty("in", OType.LINK);
edgeType.createProperty("out", OType.LINK);
edgeType.createIndex("relations", OClass.INDEX_TYPE.UNIQUE, "in", "out");
so, I changed my query to use this index
select from index:relations where Key = [ :target, :src ] or Key = [ :src,
:target ]
but execution of this query throws an exception
com.orientechnologies.orient.core.exception.OCommandExecutionException:
'Key' field is required for queries against indexes
at
com.orientechnologies.orient.core.sql.OCommandExecutorSQLSelect.searchInIndex(OCommandExecutorSQLSelect.java:1127)
at
com.orientechnologies.orient.core.sql.OCommandExecutorSQLSelect.assignTarget(OCommandExecutorSQLSelect.java:358)
at
com.orientechnologies.orient.core.sql.OCommandExecutorSQLSelect.executeSearch(OCommandExecutorSQLSelect.java:330)
at
com.orientechnologies.orient.core.sql.OCommandExecutorSQLSelect.execute(OCommandExecutorSQLSelect.java:315)
at
com.orientechnologies.orient.core.sql.OCommandExecutorSQLDelegate.execute(OCommandExecutorSQLDelegate.java:57)
at
com.orientechnologies.orient.core.storage.OStorageEmbedded.executeCommand(OStorageEmbedded.java:96)
What's wrong with it?
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