A B C E F G H I J L M N O P Q R S T U V W

A

add(String, Heuristic) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.HeuristicsRegistry

Add a heuristic to the registry including the instance of the heuristic and the corresponding name.

addElements(List<Node>) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.Histogram

Add the elements of a histogram to it, i.e. the triples object

addHistogramClass(HistogramClass) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.Histogram

Add a histogram class to the histogram

ARQo - Class in com.hp.hpl.jena.sparql.engine.optimizer

The class provides some static methods for ARQo handling.

ARQo() - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.ARQo

arqOptimizerIRI - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.ARQo

IRI for ARQo

arqOptimizerNS - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.ARQo

Root of ARQo-defined parameter names

B

BasicPatternGraph - Class in com.hp.hpl.jena.sparql.engine.optimizer.core

Abstraction of a BasicPattern as a Graph.

BasicPatternGraph(BasicPattern, Heuristic) - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternGraph

Init the BasicPatternGraph of a BasicPattern as a list of connected graphs.

BasicPatternJoin - Class in com.hp.hpl.jena.sparql.engine.optimizer.core

The class implements a number of operation applicable on joined triple patterns (BGP)

BasicPatternJoin() - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

BasicPatternOptimizer - Class in com.hp.hpl.jena.sparql.engine.optimizer.core

Implementation of basic graph pattern optimizer.

BasicPatternOptimizer(Context, BasicPattern) - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternOptimizer

Initialize the BGP optimizer.

BasicPatternOptimizer(Context, BasicPattern, HeuristicBasicPattern) - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternOptimizer

Init the BGP optimizer with a specific heuristic.

BasicPatternVisitor - Class in com.hp.hpl.jena.sparql.engine.optimizer.core

The visitor is used to ispect the BGP of a query pattern element.

BasicPatternVisitor() - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternVisitor

BGP_SELECTIVITY_ESTIMATION - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.HeuristicsRegistry

BGP_VARIABLE_COUNTING - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.HeuristicsRegistry

bOO - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

Bound object - object join

bOP - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

Bound object - predicate join

bOS - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

Bound object - subject join

bPO - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

Bound predicate - object join

bPP - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

Bound predicate - predicate join

bPS - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

Bound predicate - subject join

bSO - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

Bound subject - object join

bSP - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

Bound subject - predicate join

bSS - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

Bound subject - subject join

BUILD_DATE - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.ARQo

The date and time at which this release was built

C

com.hp.hpl.jena.sparql.engine.optimizer - package com.hp.hpl.jena.sparql.engine.optimizer

com.hp.hpl.jena.sparql.engine.optimizer.core - package com.hp.hpl.jena.sparql.engine.optimizer.core

com.hp.hpl.jena.sparql.engine.optimizer.heuristic - package com.hp.hpl.jena.sparql.engine.optimizer.heuristic

com.hp.hpl.jena.sparql.engine.optimizer.index - package com.hp.hpl.jena.sparql.engine.optimizer.index

compile(BasicPattern, ExecutionContext) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.StageGenOptimizedBasicPattern

The method compiles a BasicPattern into a StageList.

ConnectedGraph - Class in com.hp.hpl.jena.sparql.engine.optimizer.core

The class implements a connected graph, i.e. a component of the BasicPatternGraph, and the abstract optimization logic based on node and edge costs.

ConnectedGraph() - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.core.ConnectedGraph

create(Model, Model) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.PI

The method takes a schema Jena model (RDFS / OWL) and creates a QPI Jena model, which is returned.

create(Model, Model) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.QPI

The method takes a schema Jena model (RDFS / OWL) and creates a QPI Jena model, which is returned.

create(Model) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.SEI

Create the Selectivity Estimation Index (SEI)

createEdge(GraphNode, GraphNode, Double) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.ConnectedGraph

The method allows to allocate a new edge for the graph.

createNode(Triple, Double) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.ConnectedGraph

The method allows to allocate a new node for the graph.

E

equals(GraphNode) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.GraphNode

explain(Context, Query) - Static method in class com.hp.hpl.jena.sparql.engine.optimizer.ARQo

Explain the optimization performed on a query

ExplainFormatter - Class in com.hp.hpl.jena.sparql.engine.optimizer

The class takes care of pretty formatting of the ARQo explain method

ExplainFormatter() - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.ExplainFormatter

F

first() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.PrimeNumberGen

Return the first prime number, i.e. 2

formatCols(PrefixMapping, Triple, Triple, Double) - Static method in class com.hp.hpl.jena.sparql.engine.optimizer.ExplainFormatter

formatCols(PrefixMapping, Triple, Double) - Static method in class com.hp.hpl.jena.sparql.engine.optimizer.ExplainFormatter

G

get(String) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.HeuristicsRegistry

Extract a heuristic instance given it's name, which is used as key for the registry.

getBasicPatternGraph() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternOptimizer

Return the BasicPatternGraph, used mainly to explain optimizations.

getBasicPatternHeuristic() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.HeuristicsBroker

Return the best available heuristic depending on the context, i.e. the availability of specialized indexes like SEI and QPI.

getBasicPatternHeuristic(String) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.HeuristicsBroker

Return the selected basic graph pattern heuristic

getComponent(Integer) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternGraph

Return a component of the BasicPatternGraph.

getComponents() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternGraph

Return the list of the BasicPatternGraph components

getCost(Triple) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.HeuristicBasicPattern

getCost(Triple, Triple) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.HeuristicBasicPattern

getCost(Triple) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.SelectivityEstimation

This method returns the cost for the triple based on the SEI

getCost(Triple, Triple) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.SelectivityEstimation

The method returns the cost for the join between two triples based on the QPI.

getCost(Triple) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.VariableCounting

This method returns the cost for the triple based on the number and type of variables defined in the triple.

getCost(Triple, Triple) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.VariableCounting

The method returns the cost for the join between two triples for this heuristic, since there is no joined triple pattern concept for variable counting.

getEdgeByOID(Integer) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.ConnectedGraph

The method allows a retrieval of a GraphEdge, a specific edge of the ConnectedGraph by OID lookup.

getEdgeByTriples(Triple, Triple) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.ConnectedGraph

The method allows a retrieval of a GraphEdge, a specific edge of the ConnectedGraph by given the two triples which correspond to the nodes of the edge.

getEdges() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.ConnectedGraph

The method returns the List of the edges defined for the ConnectedGraph.

getFrequency() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.HistogramClass

Return the histogram class frequency

getHistogramClasses() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.Histogram

Return a list of histogram classes

getHistogramClassFrequency(Node) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.Histogram

Return the histogram class frequency for a node (an object).

getHistogramClassSize() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.Histogram

Get the histogram class size

getHistogramLowerBound() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.Histogram

Get the histogram lower bound

getHistogramUpperBound() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.Histogram

Get the histogram upper bound

getInfDataModelSize() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.QPI

The size of the inference model of the ABox (instance ontology)

getLowerBound() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.HistogramClass

Return the histogram class lower bound

getNodeByOID(Integer) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.ConnectedGraph

The method allows a retrieval of a GraphNode, a specific node of the ConnectedGraph by OID lookup.

getNodeByTriple(Triple) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.ConnectedGraph

The method allows a retrieval of a GraphNode, a specific node of the ConnectedGraph by the triple which corresponds to the node.

getNodes() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.ConnectedGraph

The method returns the List of the nodes defined for the ConnectedGraph.

getOptGraphEdgeList() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.ConnectedGraph

Return the optimized list of GraphEdge objects, The method returns null if the ConnectedGraph is not yet optimized, i.e. the method optimize() is not yet executed.

getOptGraphNodeList() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.ConnectedGraph

Return the optimized list of GraphNode objects, i.e. the Query Execution Plan.

getPatterns() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternVisitor

getResultSetSize(String, String, String) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.QPI

Given two property URI and the join type, the method returns the QPI result set size

getSelectivity(String) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.PI

Given a propertyURI the method returns the PI selectivity

getSelectivity(String, String, String) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.QPI

Given two property URI and the join type, the method returns the QPI selectivity

getSelectivity(Node, Node, Node) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.SEI

GraphEdge - Class in com.hp.hpl.jena.sparql.engine.optimizer.core

This class implements a GraphEdge used to describe an edge of a Graph.

GraphEdge(Integer, GraphNode, GraphNode, Double) - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.core.GraphEdge

Constructur.

GraphNode - Class in com.hp.hpl.jena.sparql.engine.optimizer.core

This class implements a GraphNode used to describe the node of a Graph.

GraphNode(Integer, Triple, Double) - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.core.GraphNode

Constructur.

H

HEURISTIC - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

Heuristic - Class in com.hp.hpl.jena.sparql.engine.optimizer.heuristic

This is the top abstract class for heuristic implementations

Heuristic() - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.Heuristic

HeuristicBasicPattern - Class in com.hp.hpl.jena.sparql.engine.optimizer.heuristic

The abstract class defines the methods required for implementations of cost estimators for BasicPatterns.

HeuristicBasicPattern() - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.HeuristicBasicPattern

HeuristicsBroker - Class in com.hp.hpl.jena.sparql.engine.optimizer.heuristic

The heuristic broker implements a decision making program for the selection of heuristic techniques required for optimizer implementations.

HeuristicsBroker(Context) - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.HeuristicsBroker

HeuristicsRegistry - Class in com.hp.hpl.jena.sparql.engine.optimizer.heuristic

The class is a registry for heuristics

HeuristicsRegistry() - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.HeuristicsRegistry

HeuristicsRegistry(Context) - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.HeuristicsRegistry

The constructor initializes the registry of available heuristics

Histogram - Class in com.hp.hpl.jena.sparql.engine.optimizer.index

The class represents a histogram for the object value distribution for a predicate.

Histogram() - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.index.Histogram

HISTOGRAM_CLASS_FREQUENCY - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

HISTOGRAM_CLASS_LOWER_BOUND - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

HISTOGRAM_CLASS_RESOURCE - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

HISTOGRAM_CLASS_SIZE - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

HISTOGRAM_CLASSES - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

HISTOGRAM_LOWER_BOUND - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

HISTOGRAM_RESOURCE - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

HISTOGRAM_UPPER_BOUND - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

HistogramClass - Class in com.hp.hpl.jena.sparql.engine.optimizer.index

The class represents a histogram class

HistogramClass() - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.index.HistogramClass

I

increment() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.HistogramClass

Increment the histogram class, i.e. increment the frequency by one.

init() - Static method in class com.hp.hpl.jena.sparql.engine.optimizer.ARQo

Load the ARQ optimizer, no specilized indexes are provided.

init(QueryExecution) - Static method in class com.hp.hpl.jena.sparql.engine.optimizer.ARQo

Load the ARQ optimizer, no specilized indexes are provided.

init(Model, Model) - Static method in class com.hp.hpl.jena.sparql.engine.optimizer.ARQo

Load the ARQ optimizer by providing the Jena graph models for the SEI and the QPI.

init(Model, Model, QueryExecution) - Static method in class com.hp.hpl.jena.sparql.engine.optimizer.ARQo

Load the ARQ optimizer by providing the file names for the SEI and the QPI.

isJoined(GraphNode, GraphNode) - Static method in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

The method returns true if two GraphNodes are joined, because of matching S/P/O.

isJoined(Triple, Triple) - Static method in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

The method returns true if two Triple are joined, because of matching S/P/O.

isLoaded() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.PI

Check whether or not the QPI hash index is loaded

isLoaded() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.QPI

Check whether or not the QPI hash index is loaded

isLoaded() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.SEI

Check whether or not the SEI is loaded

isRegistred(String) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.HeuristicsRegistry

Check if a heuristic is registred

J

JOIN_RESOURCE - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

L

load(Model) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.PI

The method to load a Jena QPI model into a QPI hash index

load(Model) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.QPI

The method to load a Jena QPI model into a QPI hash index

load(Model) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.SEI

Load the Jena graph model corresponding to the SEI

LOCALHOST - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

M

MAJOR_VERSION - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.ARQo

The major version number for this release of ARQo (ie '2' for ARQo 2.0)

MINOR_VERSION - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.ARQo

The minor version number for this release of ARQo (ie '0' for ARQo 2.0)

N

NAME - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.ARQo

The product name

next() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.PrimeNumberGen

Return the next prime number

next(Integer) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.PrimeNumberGen

Given a natural number return the next prime number

node1() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.GraphEdge

The node1

node2() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.GraphEdge

The node2

nodes() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.GraphEdge

The list of nodes.

numberOfConnectedComponents() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternGraph

The method returns the size of the components list, i.e. the number of components identified for the BasicPatternGraph

O

objectSelectivity(Node, Node) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.SEI

The object selectivity is 1.0 if the node is a variable.

oid() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.GraphEdge

The OID of the GraphEdge.

oid() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.GraphNode

The OID of the GraphNode.

optimize() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternGraph

Optimize the BasicPatternGraph by optimizing its components (ConnectedGraph).

optimize() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternOptimizer

Given a BasicPattern, the method abstracts the BasicPattern as a BasicPatternGraph and inits the optimization program.

optimize() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.ConnectedGraph

Optimize a connected graph according to our BasicGraphPattern optimization approach.

Optimizer - Class in com.hp.hpl.jena.sparql.engine.optimizer.core

Abstract class for ARQo optimizer's.

Optimizer(Context) - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.core.Optimizer

P

PATH - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.ARQo

The root package name for ARQo

PI - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

PI - Class in com.hp.hpl.jena.sparql.engine.optimizer.index

The class creates an index of property selectivities for a given schema ontology.

PI() - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.index.PI

PI_CLASS - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

PI_PROPERTY - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

PI_RESOURCE - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

PREDICATE_CLASS - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

PREDICATE_HISTOGRAM - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

PREDICATE_RESOURCE - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

predicateSelectivity(Node) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.SEI

The predicate selectivity is 1.0 if the node is a variable.

PrimeNumberGen - Class in com.hp.hpl.jena.sparql.engine.optimizer.core

The class is a prime number generator.

PrimeNumberGen() - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.core.PrimeNumberGen

printTable(PrintStream, String[], List<List>, String, String) - Static method in class com.hp.hpl.jena.sparql.engine.optimizer.ExplainFormatter

Q

QPI - Class in com.hp.hpl.jena.sparql.engine.optimizer.index

The class creates the QPI given a schema model.

QPI() - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.index.QPI

QPI_CLASS - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

QPI_JOIN_TYPE - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

QPI_JOINED_PROPERTY_URI - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

QPI_JOINING_PROPERTY_URI - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

QPI_RESOURCE - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

QPI_SYMBOL - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

R

reset() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.PrimeNumberGen

Reset the generator to start at the first prime

RESULT_SET_SIZE - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

S

SEI - Class in com.hp.hpl.jena.sparql.engine.optimizer.index

The class creates the SEI given a Jena graph model.

SEI() - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.index.SEI

SEI_CLASS - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

SEI_NR_OF_RESOURCES - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

SEI_NR_OF_TRIPLES - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

SEI_PREDICATE - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

SEI_PREDICATES - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

SEI_RESOURCE - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

SEI_SYMBOL - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

SELECTIVITY - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

SelectivityEstimation - Class in com.hp.hpl.jena.sparql.engine.optimizer.heuristic

The heuristic is an implementation of the SEI / QPI approaches by Bernstein et al. developed at the Department of Informatics, University of Zurich within the MSc thesis of Markus Stocker.

SelectivityEstimation(Context) - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.SelectivityEstimation

setFrequency(Integer) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.HistogramClass

Set the histogram class frequency

setHeuristic(String, QueryExecution) - Static method in class com.hp.hpl.jena.sparql.engine.optimizer.ARQo

Set a specific heuristic, i.e. tell the broker to use a specific one.

setHistogramClassSize(Double) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.Histogram

Set the histogram class size

setHistogramLowerBound(Double) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.Histogram

Set the histogram lower bound

setHistogramUpperBound(Double) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.Histogram

Set the histogram upper bound

setLowerBound(Double) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.HistogramClass

The histogram class lower bound.

size() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.Histogram

Return the number of elements contained in the histogram.

size() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.QPI

The size of the index

StageGenOptimizedBasicPattern - Class in com.hp.hpl.jena.sparql.engine.optimizer

The class implements the ARQ optimizer for basic graph patterns.

StageGenOptimizedBasicPattern() - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.StageGenOptimizedBasicPattern

subjectSelectivity(Node) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.index.SEI

The subject selectivity is 1.0 if the node is a variable.

T

triple() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.GraphNode

The triple pattern which corresponds to the graph node

types(Triple, Triple) - Static method in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

The method returns a list of join types defined for two triples.

U

uOO - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

Unbound subject - subject join

uOP - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

Unbound subject - subject join

uOS - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

Unbound subject - subject join

uPO - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

Unbound subject - subject join

uPP - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

Unbound subject - subject join

uPS - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

Unbound subject - subject join

uSO - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

Unbound subject - subject join

uSP - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

Unbound subject - subject join

uSS - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternJoin

Unbound subject - subject join

V

VariableCounting - Class in com.hp.hpl.jena.sparql.engine.optimizer.heuristic

This heuristic implements a simple variable counting technique to estimate the execution cost of edges and nodes of graphs (i.e.

VariableCounting() - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.heuristic.VariableCounting

VERSION - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.ARQo

The full name of the current ARQo version

VERSION_STATUS - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.ARQo

The version status for this release of ARQo (eg '-beta1' or the empty string)

visit(OpBGP) - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.BasicPatternVisitor

Vocabulary - Class in com.hp.hpl.jena.sparql.engine.optimizer.core

The class contains name spaces used for ARQo

Vocabulary() - Constructor for class com.hp.hpl.jena.sparql.engine.optimizer.core.Vocabulary

W

WEBSITE - Static variable in class com.hp.hpl.jena.sparql.engine.optimizer.ARQo

The ARQo web site : see also http://jena.sourceforge.net

weight() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.GraphEdge

The weight of the GraphEdge.

weight() - Method in class com.hp.hpl.jena.sparql.engine.optimizer.core.GraphNode

The weight of the GraphNode.

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