com.thinkaurelius.titan.core.schema

Interface RelationTypeIndex

All Superinterfaces:

Namifiable, TitanSchemaElement

All Known Implementing Classes:

RelationTypeIndexWrapper

public interface RelationTypeIndex
extends TitanSchemaElement

A RelationTypeIndex is an index installed on a RelationType to speed up vertex-centric indexes for that type. A RelationTypeIndex is created via TitanManagement.createEdgeIndex(com.thinkaurelius.titan.core.EdgeLabel, String, com.tinkerpop.blueprints.Direction, com.thinkaurelius.titan.core.Order, com.thinkaurelius.titan.core.RelationType...) for edge labels and TitanManagement.createPropertyIndex(com.thinkaurelius.titan.core.PropertyKey, String, com.thinkaurelius.titan.core.Order, com.thinkaurelius.titan.core.RelationType...) for property keys.

This interface allows the inspection of already defined RelationTypeIndex'es. An existing index on a RelationType can be retrieved via TitanManagement.getRelationIndex(com.thinkaurelius.titan.core.RelationType, String).

Author:

Matthias Broecheler (me@matthiasb.com)

Method Summary

Methods

Modifier and Type	Method and Description
com.tinkerpop.blueprints.Direction	getDirection() Returns the direction on which this index is installed.
RelationType[]	getSortKey() Returns the (composite) sort key for this index.
Order	getSortOrder() Returns the sort order of this index.
RelationType	getType() Returns the RelationType on which this index is installed.

Methods inherited from interface com.thinkaurelius.titan.core.Namifiable

getName

Method Detail

getType

RelationType getType()

Returns the RelationType on which this index is installed.

Returns:

getSortOrder

Order getSortOrder()

Returns the sort order of this index. Index entries are sorted in this order and queries which use this sort order will be faster.

Returns:

getSortKey

RelationType[] getSortKey()

Returns the (composite) sort key for this index. The composite sort key is an ordered list of RelationTypes

Returns:

getDirection

com.tinkerpop.blueprints.Direction getDirection()

Returns the direction on which this index is installed. An index may cover only one or both directions.

Returns: