org.aksw.commons.graph

Interface ITripleCacheIndex

All Known Implementing Classes:

TripleCacheIndexImpl

public interface ITripleCacheIndex

Method Summary

Methods

Modifier and Type	Method and Description
void	addSeen(Collection<com.hp.hpl.jena.graph.Triple> triples) Addes triples to the cache.
void	clear()
IndexCompatibilityLevel	getCompatibilityLevel(int[] columnIds)
IndexCompatibilityLevel	getCompatibilityLevel(com.hp.hpl.jena.graph.Triple pattern) Deprecated.
IGraph	getGraph()
int[]	getKeyColumns() Returns the "columns" that are indexed - columns correspond to 0 = subject, 1 = predicate, 2 = object
CacheState	getState()
int[]	getValueColumns() Returns the "columns" for which values are provided by this index
void	index(Collection<com.hp.hpl.jena.graph.Triple> triples) Indexes the triples.
Collection<com.hp.hpl.jena.graph.Triple>	lookup(List<Object> key) Retrieves and caches data for the given triple patterns.
void	registerMisses(Set<List<Object>> keys)
void	removeSeen(Collection<com.hp.hpl.jena.graph.Triple> triples) Methods which are used to notify the index about new triples

Method Detail

getGraph

IGraph getGraph()

index

void index(Collection<com.hp.hpl.jena.graph.Triple> triples)

Indexes the triples. Completeness of the partitions is assumed.

Parameters:

triples -

registerMisses

void registerMisses(Set<List<Object>> keys)

addSeen

void addSeen(Collection<com.hp.hpl.jena.graph.Triple> triples)

Addes triples to the cache. The level indicates whether new index partitions created from these triples are incomplete (so there might be more triples in the underlying graph, which have not been touched so far), or complete.

Parameters:

triples -

level -

removeSeen

void removeSeen(Collection<com.hp.hpl.jena.graph.Triple> triples)

Methods which are used to notify the index about new triples

Parameters:

triples -

getCompatibilityLevel

@Deprecated
IndexCompatibilityLevel getCompatibilityLevel(com.hp.hpl.jena.graph.Triple pattern)

Deprecated.

Returns the compatibility level for a given pattern

Parameters:

triple -

Returns:

getCompatibilityLevel

IndexCompatibilityLevel getCompatibilityLevel(int[] columnIds)

getKeyColumns

int[] getKeyColumns()

Returns the "columns" that are indexed - columns correspond to 0 = subject, 1 = predicate, 2 = object

Returns:

getValueColumns

int[] getValueColumns()

Returns the "columns" for which values are provided by this index

Returns:

lookup

Collection<com.hp.hpl.jena.graph.Triple> lookup(List<Object> key)

Retrieves and caches data for the given triple patterns. All triple patterns must be compatible with the index.

Parameters:

triple -

Returns:

clear

void clear()

getState

CacheState getState()