Package org.openanzo.glitter.query

Interface Summary

CostBasedQueryExecutionPlan	A CostBasedQueryExecutionPlan uses a NodeCostModel to generate an execution plan for the Glitter engine.
FunctionalPredicate	A FunctionalPredicate is a URI that generates bindings/solutions to a query in a different fashion from the standard graph-pattern matching.
NodeCostModel	A NodeCostModel can assign a query-execution cost to any TreeNode in a SPARQL query
PatternSolution	See http://www.w3.org/TR/rdf-sparql-query/#PatternSolutions A pattern solution is a potential single row in a result set.
PredicateSelectivityProvider	A PredicateSelectivityProvider defines selectivity values for a given predicate.
QueryExecutionPlan	A QueryExecutionPlan determines the order that bindings for sibling nodes in a SPARQL query.
QueryExecutionServices	This is unused code.
QueryExecutor	A QueryExecutor implements the actual logic for orchestrating a QueryController, a SolutionGenerator, an RDFDataset, a QueryExecutionPlan, and other components to produce a result set.
QueryInformation	Provides read-only access to basic query information.
QueryResultForm	A QueryResultForm represents the form of results returned for a particular QueryType.
QueryValidator	A QueryValidator is a stateful class that determines whether or not the engine will accept a given query.
SolutionGenerator	A SolutionGenerator is a backend to the Glitter engine that knows how to generate a specific type of bindings.
SolutionGeneratorFactory	Factory class for generating SolutionGenerators.
SolutionSet	A SolutionSet is a query result set; it is an ordered sequence of solutions.
TreeRewriter	A TreeRewriter gets handed the nodes of a Glitter abstract syntax tree in a post-order traversal and can rewrite it as it sees fit.

Class Summary

Ask	The Ask query form serializes results as a booealn depending on whether or not there are any solutions in the result set.
Construct	The Construct query form applies the result set's bindings to an RDF template, resulting in an RDF graph.
GroupByProjecton	GroupByProjection handles the SELECT SPARQL query form when it includes a GROUP BY clause.
OrderingCondition	A single ordering condition in an ORDER BY clause of a query.
ParallelQueryExecutor	The ParallelQueryExecutor is unimplemented.
PatternSolutionImpl	Implements a PatternSolution as a Map from Bindable objects to RDFTerms.
PatternSolutionImpl.SetSolutionComparator	Used to provide a stable sort to two PatternSolutions.
Projection	Projection handles the SELECT SPARQL query form, in which the result set is returned after being projected out to only the selected variables.
QueryController	The QueryController is a central point for much of the information that characterizes a parsed and prepared query.
QueryExecutorFactory	A QueryExecutorFactory returns QueryExecutor's that can execute a given query with a given SolutionGenerator.
QueryResults	QueryResults bundles together the result object (as given by QueryResultForm.serializeResults(SolutionSet) with the QueryController that represents the parsed and prepared query.
SerialQueryExecutor	The SerialQueryExecutor is the standard QueryExecutor.
SolutionList	An implementation of SolutionSet using an ArrayList of PatternSolutions.
SolutionSorter	Sorts solutions according to a given list of OrderingConditions.
SPARQLAlgebra	A collection of static utility methods that implement the algebraic functions for composing sets of SPARQL solutions.

Enum Summary

QueryType

An enumeration of possible SPARQL query types.