Package org.eclipse.rdf4j.query
Interfaces and classes for handling queries and query results.
-
Interface Summary Interface Description Binding A named value binding.BindingSet A BindingSet is a set of named value bindings, which is used a.o.BooleanQuery BooleanQueryResultHandler An interface that indicates that this QueryResultHandler is capable of handling boolean results using theQueryResultHandler.handleBoolean(boolean)method.Dataset Represents a dataset against which operations can be evaluated.GraphQuery GraphQueryResult A representation of a query result as a sequence ofStatementobjects.MutableBindingSet A BindingSet is a set of named value bindings, which is used a.o.Operation An operation (e.g.Query A query on a repository that can be formulated in one of the supported query languages (for example SPARQL).QueryResult<T> Super type of all query result types (TupleQueryResult, GraphQueryResult, etc.).QueryResultHandler The super class of all handlers for processing query results.TupleQuery TupleQueryResult A representation of a variable-binding query result as a sequence ofBindingSetobjects.TupleQueryResultHandler An interface defining methods related to handling sequences of Solutions.Update An update operation on a repository that can be formulated in one of the supported query languages (for example SPARQL). -
Class Summary Class Description AbstractBindingSet Abstract base class forBindingSetimplementations, providing a.o.AbstractTupleQueryResultHandler Base class forTupleQueryResultHandlers with dummy implementations of all methods.QueryLanguage A type-safe enumeration for RDF query languages such asQueryLanguage.SPARQL.QueryResults Utility methods related to query results. -
Enum Summary Enum Description Query.QueryType The different types of queries that RDF4J recognizes: boolean queries, graph queries, and tuple queries. -
Exception Summary Exception Description BooleanQueryResultHandlerException An exception that can be thrown by an BooleanQueryResultHandler when it encounters an unrecoverable error.IncompatibleOperationException An exception indicating that a string could not be parsed into an operation of the expected type by the parser.MalformedQueryException An exception indicating that a query could not be processed by the query parser, typically due to syntax errors.QueryEvaluationException An exception indicating that the evaluation of a query failed.QueryInterruptedException An exception indicating that the evaluation of a query has been interrupted, for example because it took too long to complete.QueryResultHandlerException The super class of exceptions originating fromQueryResultHandlerimplementations.TupleQueryResultHandlerException An exception that can be thrown by an TupleQueryResultHandler when it encounters an unrecoverable error.UnsupportedQueryLanguageException A RuntimeException indicating that a specific query language is not supported.UpdateExecutionException An exception indicating that the execution of an update failed.