Package org.aksw.jena_sparql_api.core

Class FluentQueryExecutionFactoryFn<P>

java.lang.Object

org.aksw.jena_sparql_api.core.FluentBase<Function<T,T>,P>

org.aksw.jena_sparql_api.core.FluentFnBase<org.aksw.jenax.dataaccess.sparql.factory.execution.query.QueryExecutionFactory,P>

org.aksw.jena_sparql_api.core.FluentQueryExecutionFactoryFn<P>

Type Parameters:

T -

All Implemented Interfaces:

ParentSuppliable<P>

public class FluentQueryExecutionFactoryFn<P>
extends FluentFnBase<org.aksw.jenax.dataaccess.sparql.factory.execution.query.QueryExecutionFactory,P>

A fluent API for conveniently building 'recipes' of transformations to apply to any QueryExecutionFactory. Custom functions can be chained using the generic compose(yourFn) method.

Author:

raven

Field Summary

Fields inherited from class org.aksw.jena_sparql_api.core.FluentFnBase

defaultReverseChaining

Fields inherited from class org.aksw.jena_sparql_api.core.FluentBase

fn, parentSupplier

Constructor Summary

Constructors

Constructor	Description
FluentQueryExecutionFactoryFn()
FluentQueryExecutionFactoryFn(com.google.common.base.Supplier<P> parentSupplier, Function<org.aksw.jenax.dataaccess.sparql.factory.execution.query.QueryExecutionFactory,org.aksw.jenax.dataaccess.sparql.factory.execution.query.QueryExecutionFactory> fn)

Method Summary

Modifier and Type	Method	Description
FluentQueryExecutionFactoryFn<P>	compose(Function<org.aksw.jenax.dataaccess.sparql.factory.execution.query.QueryExecutionFactory,org.aksw.jenax.dataaccess.sparql.factory.execution.query.QueryExecutionFactory> nextFn)
FluentQueryExecutionFactoryFn<P>	composeExec(org.aksw.jenax.dataaccess.sparql.exec.query.QueryExecFactoryQueryTransform decorizer)
FluentQueryExecutionFactoryFn<P>	selectOnly()	Transforms all non-SELECT query forms to SELECT queries.
static FluentQueryExecutionFactoryFn<?>	start()
static <T> Function<T,T>	toFunction(Consumer<T> consumer)	Given a consumer of 'x', return a function that first invokes the consumer and then yields 'x'.
FluentQueryExecutionFactoryFn<P>	withCache(CacheBackend cache)
FluentQueryExecutionFactoryFn<P>	withCache(CacheFrontend cache)
FluentQueryExecutionFactoryFn<P>	withClientSideConstruct()
FluentQueryExecutionFactoryFn<P>	withDatasetDescription(org.apache.jena.sparql.core.DatasetDescription datasetDescription)
FluentQueryExecutionFactoryFn<P>	withDefaultLimit(long limit, boolean doCloneQuery)
FluentQueryExecutionFactoryFn<P>	withDelay(int delayDuration, TimeUnit delayTimeUnit)
FluentQueryExecutionFactoryFn<P>	withDelay(Delayer delayer)	Wraps the current QueryExecutionFactory with a delayer.
FluentQueryExecutionFactoryFn<P>	withExogeneousTimeout()
FluentQueryExecutionFactoryFn<P>	withPagination(int pageSize)
FluentQueryExecutionFactoryFn<P>	withParser(Function<String,org.apache.jena.query.Query> parser)
FluentQueryExecutionFactoryFn<P>	withPostProcessor(Consumer<org.apache.jena.query.QueryExecution> postProcessor)	Configure a function for post processing QueryExecution instances before returning them to the application.
FluentQueryExecutionFactoryFn<P>	withPostTransformer(Function<? super org.apache.jena.query.QueryExecution,? extends org.apache.jena.query.QueryExecution> postProcessor)
FluentQueryExecutionFactoryFn<P>	withPrefixes(org.apache.jena.shared.PrefixMapping pm, boolean doClone)
FluentQueryExecutionFactoryFn<P>	withQueryTransform(org.aksw.jenax.arq.util.query.QueryTransform queryTransform)
FluentQueryExecutionFactoryFn<P>	withResultTransform(org.apache.jena.sparql.graph.NodeTransform nodeTransform)	Transform nodes of SPARQL results (models, datasets, result sets).
FluentQueryExecutionFactoryFn<P>	withRetry(int retryCount, long retryDelayDuration, TimeUnit retryDelayTimeUnit)

Methods inherited from class org.aksw.jena_sparql_api.core.FluentFnBase

value

Methods inherited from class org.aksw.jena_sparql_api.core.FluentBase

create, end, setParentSupplier

Methods inherited from class java.lang.Object

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

Constructor Details

FluentQueryExecutionFactoryFn

public FluentQueryExecutionFactoryFn()

FluentQueryExecutionFactoryFn

public FluentQueryExecutionFactoryFn(com.google.common.base.Supplier<P> parentSupplier,
 Function<org.aksw.jenax.dataaccess.sparql.factory.execution.query.QueryExecutionFactory,org.aksw.jenax.dataaccess.sparql.factory.execution.query.QueryExecutionFactory> fn)

Method Details

compose

public FluentQueryExecutionFactoryFn<P> compose(Function<org.aksw.jenax.dataaccess.sparql.factory.execution.query.QueryExecutionFactory,org.aksw.jenax.dataaccess.sparql.factory.execution.query.QueryExecutionFactory> nextFn)

Overrides:

compose in class FluentFnBase<org.aksw.jenax.dataaccess.sparql.factory.execution.query.QueryExecutionFactory,P>

withDelay

public FluentQueryExecutionFactoryFn<P> withDelay(int delayDuration,
 TimeUnit delayTimeUnit)

withDelay

public FluentQueryExecutionFactoryFn<P> withDelay(Delayer delayer)

Wraps the current QueryExecutionFactory with a delayer. Returns 'this' without further action if the argument is null.

Parameters:

delayer -

Returns:

withPrefixes

public FluentQueryExecutionFactoryFn<P> withPrefixes(org.apache.jena.shared.PrefixMapping pm,
 boolean doClone)

withParser

public FluentQueryExecutionFactoryFn<P> withParser(Function<String,org.apache.jena.query.Query> parser)

withClientSideConstruct

public FluentQueryExecutionFactoryFn<P> withClientSideConstruct()

withPagination

public FluentQueryExecutionFactoryFn<P> withPagination(int pageSize)

withRetry

public FluentQueryExecutionFactoryFn<P> withRetry(int retryCount,
 long retryDelayDuration,
 TimeUnit retryDelayTimeUnit)

withCache

public FluentQueryExecutionFactoryFn<P> withCache(CacheBackend cache)

withCache

public FluentQueryExecutionFactoryFn<P> withCache(CacheFrontend cache)

withResultTransform

public FluentQueryExecutionFactoryFn<P> withResultTransform(org.apache.jena.sparql.graph.NodeTransform nodeTransform)

Transform nodes of SPARQL results (models, datasets, result sets). Can be used for e.g. for blank node skolemization.

Parameters:

nodeTransform -

Returns:

withDefaultLimit

public FluentQueryExecutionFactoryFn<P> withDefaultLimit(long limit,
 boolean doCloneQuery)

withQueryTransform

public FluentQueryExecutionFactoryFn<P> withQueryTransform(org.aksw.jenax.arq.util.query.QueryTransform queryTransform)

toFunction

public static <T> Function<T,T> toFunction(Consumer<T> consumer)

Given a consumer of 'x', return a function that first invokes the consumer and then yields 'x'. (i.e. return an identity function with the consumer's side effect)

Parameters:

consumer -

Returns:

withPostProcessor

public FluentQueryExecutionFactoryFn<P> withPostProcessor(Consumer<org.apache.jena.query.QueryExecution> postProcessor)

Configure a function for post processing QueryExecution instances before returning them to the application. Note: consumer is probably not the semantically appropriate interface

Parameters:

postProcessor -

Returns:

withPostTransformer

public FluentQueryExecutionFactoryFn<P> withPostTransformer(Function<? super org.apache.jena.query.QueryExecution,? extends org.apache.jena.query.QueryExecution> postProcessor)

withExogeneousTimeout

public FluentQueryExecutionFactoryFn<P> withExogeneousTimeout()

withDatasetDescription

public FluentQueryExecutionFactoryFn<P> withDatasetDescription(org.apache.jena.sparql.core.DatasetDescription datasetDescription)

selectOnly

public FluentQueryExecutionFactoryFn<P> selectOnly()

Transforms all non-SELECT query forms to SELECT queries. I.e. rewrites ASK, DESCRIBE and CONSTRUCT to SELECT queries. Only the select query is passed on for further execution, whereas the final response is constructed from the result set.

Returns:

composeExec

public FluentQueryExecutionFactoryFn<P> composeExec(org.aksw.jenax.dataaccess.sparql.exec.query.QueryExecFactoryQueryTransform decorizer)

start

public static FluentQueryExecutionFactoryFn<?> start()