org.apache.polygene.index.rdf.query

Class RdfQueryService.RdfEntityFinderMixin

java.lang.Object

org.apache.polygene.index.rdf.query.RdfQueryService.RdfEntityFinderMixin

All Implemented Interfaces:

EntityFinder

Enclosing interface:

RdfQueryService

public static class RdfQueryService.RdfEntityFinderMixin
extends Object
implements EntityFinder

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Constructor Summary

Constructors

Constructor and Description
RdfEntityFinderMixin()

Method Summary

Modifier and Type	Method and Description
long	countEntities(Class<?> resultType, Predicate<Composite> whereClause, Map<String,Object> variables) Count entities matching the query criterion.
Stream<EntityReference>	findEntities(Class<?> resultType, Predicate<Composite> whereClause, List<OrderBy> orderBySegments, Integer firstResult, Integer maxResults, Map<String,Object> variables) Find entities matching the query criterion.
EntityReference	findEntity(Class<?> resultType, Predicate<Composite> whereClause, Map<String,Object> variables) Find a single entity matching the query criterion.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RdfEntityFinderMixin

public RdfEntityFinderMixin()

Method Detail

findEntities

public Stream<EntityReference> findEntities(Class<?> resultType,
                                            Predicate<Composite> whereClause,
                                            List<OrderBy> orderBySegments,
                                            Integer firstResult,
                                            Integer maxResults,
                                            Map<String,Object> variables)
                                     throws EntityFinderException

Description copied from interface: EntityFinder

Find entities matching the query criterion.

Specified by:

findEntities in interface EntityFinder

Parameters:

resultType - Type that the entities must have.

whereClause - Where clause specification.

orderBySegments - Ordering

firstResult - Index of the first returned entity.

maxResults - Maximum returned entities.

variables - Query variables

Returns:

Entities matching the query criterion.

Throws:

EntityFinderException - on error

findEntity

public EntityReference findEntity(Class<?> resultType,
                                  Predicate<Composite> whereClause,
                                  Map<String,Object> variables)
                           throws EntityFinderException

Description copied from interface: EntityFinder

Find a single entity matching the query criterion.

Specified by:

findEntity in interface EntityFinder

Parameters:

resultType - Type that the entity must have.

whereClause - Where clause specification.

variables - Query variables

Returns:

Single entity matching the query criterion.

Throws:

EntityFinderException - on error

countEntities

public long countEntities(Class<?> resultType,
                          Predicate<Composite> whereClause,
                          Map<String,Object> variables)
                   throws EntityFinderException

Description copied from interface: EntityFinder

Count entities matching the query criterion.

Specified by:

countEntities in interface EntityFinder

Parameters:

resultType - Type that the entities must have.

whereClause - Where clause specification.

variables - Query variables

Returns:

Count entities matching the query criterion.

Throws:

EntityFinderException - on error