de.lmu.ifi.dbs.elki.database.query

Interface DatabaseQuery

All Known Subinterfaces:

DistanceQuery<O,D>, DistanceSimilarityQuery<O,D>, FilteredLocalPCABasedDistanceFunction.Instance<T,I,D>, IndexBasedDistanceFunction.Instance<T,I,D>, IndexBasedSimilarityFunction.Instance<T,I,D>, KNNQuery<O,D>, LinearScanQuery, RangeQuery<O,D>, Relation<O>, RKNNQuery<O,D>, SimilarityQuery<O,D>, SpatialDistanceQuery<V,D>

All Known Implementing Classes:

AbstractDatabaseDistanceFunction.Instance, AbstractDatabaseDistanceQuery, AbstractDataBasedQuery, AbstractDBIDSimilarityQuery, AbstractDistanceKNNQuery, AbstractDistanceQuery, AbstractDistanceRangeQuery, AbstractIndexBasedDistanceFunction.Instance, AbstractIndexBasedSimilarityFunction.Instance, AbstractPreferenceVectorBasedCorrelationDistanceFunction.Instance, AbstractRefiningIndex.AbstractKNNQuery, AbstractRefiningIndex.AbstractRangeQuery, AbstractRKNNQuery, AbstractSimilarityAdapter.Instance, AbstractSimilarityQuery, ClusterOrderResult.PredecessorAdapter, ClusterOrderResult.ReachabilityDistanceAdapter, ConvertToStringView, DBIDDistanceQuery, DBIDView, DiSHDistanceFunction.Instance, DoubleDistanceMetricalIndexKNNQuery, DoubleDistanceMetricalIndexRangeQuery, DoubleDistanceRStarTreeKNNQuery, DoubleDistanceRStarTreeRangeQuery, ERiCDistanceFunction.Instance, FractionalSharedNearestNeighborSimilarityFunction.Instance, GenericRStarTreeKNNQuery, GenericRStarTreeRangeQuery, HiSCDistanceFunction.Instance, LinearScanKNNQuery, LinearScanPrimitiveDistanceKNNQuery, LinearScanPrimitiveDistanceRangeQuery, LinearScanRangeQuery, LinearScanRawDoubleDistanceKNNQuery, LinearScanRawDoubleDistanceRangeQuery, LinearScanRKNNQuery, LocallyWeightedDistanceFunction.Instance, LocalSubspaceDistanceFunction.Instance, MaterializedRelation, MetricalIndexKNNQuery, MetricalIndexRangeQuery, MinKDistance.Instance, MkTreeRKNNQuery, PartialVAFile.PartialVAFileKNNQuery, PartialVAFile.PartialVAFileRangeQuery, PCABasedCorrelationDistanceFunction.Instance, PreprocessorKNNQuery, PreprocessorRKNNQuery, PrimitiveDistanceQuery, PrimitiveDistanceSimilarityQuery, PrimitiveSimilarityQuery, ProjectedView, ProxyView, SharedNearestNeighborJaccardDistanceFunction.Instance, SharedNearestNeighborSimilarityFunction.Instance, SimilarityAdapterArccos.Instance, SimilarityAdapterLinear.Instance, SimilarityAdapterLn.Instance, SOD.SODProxyScoreResult, SpatialPrimitiveDistanceQuery, VAFile.VAFileKNNQuery, VAFile.VAFileRangeQuery

public interface DatabaseQuery

General interface for database queries. Will only contain elemental stuff such as some hints.

Field Summary

Fields

Modifier and Type	Field and Description
static String	HINT_BULK Optimizer hint: request bulk support.
static String	HINT_EXACT Optimizer hint: exact - no approximations allowed!
static String	HINT_HEAVY_USE Optimizer hint: heavy use - caching/preprocessing/approximation recommended
static String	HINT_NO_CACHE Optimizer hint: no cache instances
static String	HINT_OPTIMIZED_ONLY Optimizer hint: no linear scans allowed - return null then!
static String	HINT_SINGLE Optimizer hint: only a single request will be done - avoid expensive optimizations

Field Detail

HINT_BULK

static final String HINT_BULK

Optimizer hint: request bulk support.

See Also:

Constant Field Values

HINT_SINGLE

static final String HINT_SINGLE

Optimizer hint: only a single request will be done - avoid expensive optimizations

See Also:

Constant Field Values

HINT_OPTIMIZED_ONLY

static final String HINT_OPTIMIZED_ONLY

Optimizer hint: no linear scans allowed - return null then!

See Also:

Constant Field Values

HINT_HEAVY_USE

static final String HINT_HEAVY_USE

Optimizer hint: heavy use - caching/preprocessing/approximation recommended

See Also:

Constant Field Values

HINT_EXACT

static final String HINT_EXACT

Optimizer hint: exact - no approximations allowed!

See Also:

Constant Field Values

HINT_NO_CACHE

static final String HINT_NO_CACHE

Optimizer hint: no cache instances

See Also:

Constant Field Values