com.thinkaurelius.titan.graphdb.database.cache

Interface SchemaCache

All Known Implementing Classes:

MetricInstrumentedSchemaCache, StandardSchemaCache

public interface SchemaCache

This interface defines the methods that a SchemaCache must implement. A SchemaCache is maintained by the Titan graph database in order to make the frequent lookups of schema vertices and their attributes more efficient through a dedicated caching layer. Schema vertices are type vertices and related vertices. The SchemaCache speeds up two types of lookups:

• Retrieving a type by its name (index lookup)
• Retrieving the relations of a schema vertex for predefined SystemRelationTypes

Author:

Matthias Broecheler (me@matthiasb.com)

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	SchemaCache.StoreRetrieval

Method Summary

Methods

Modifier and Type	Method and Description
void	expireSchemaName(String name)
void	expireSchemaRelations(long schemaId)
Long	getSchemaId(String schemaName, StandardTitanTx tx)
EntryList	getSchemaRelations(long schemaId, BaseRelationType type, com.tinkerpop.blueprints.Direction dir, StandardTitanTx tx)

Method Detail

getSchemaId

Long getSchemaId(String schemaName,
               StandardTitanTx tx)

getSchemaRelations

EntryList getSchemaRelations(long schemaId,
                           BaseRelationType type,
                           com.tinkerpop.blueprints.Direction dir,
                           StandardTitanTx tx)

expireSchemaName

void expireSchemaName(String name)

expireSchemaRelations

void expireSchemaRelations(long schemaId)