org.wikidata.query.rdf.tool.change

Class ChangeSourceContext

java.lang.Object

org.wikidata.query.rdf.tool.change.ChangeSourceContext

public final class ChangeSourceContext
extends Object

Provides methods to initialize change sources. Depends on options provided on the command line for the choice of source.

See Also:

UpdateOptions

Method Summary

Modifier and Type	Method and Description
static Change.Source<? extends Change.Batch>	buildChangeSource(UpdateOptions options, Instant startTime, WikibaseRepository wikibaseRepository, RdfClient rdfClient, URI root, com.codahale.metrics.MetricRegistry metricRegistry) Build a change source.
static Instant	getStartTime(Instant startInstant, RdfRepository rdfRepository, boolean init) Determine instant from which to start polling.

Methods inherited from class java.lang.Object

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

Method Detail

buildChangeSource

@Nonnull
public static Change.Source<? extends Change.Batch> buildChangeSource(UpdateOptions options,
                                                                               Instant startTime,
                                                                               WikibaseRepository wikibaseRepository,
                                                                               RdfClient rdfClient,
                                                                               URI root,
                                                                               com.codahale.metrics.MetricRegistry metricRegistry)

Build a change source.

Returns:

the change source

Throws:

IllegalArgumentException - if the options are invalid

IllegalStateException - if the left off date is too ancient

getStartTime

@Nonnull
public static Instant getStartTime(Instant startInstant,
                                            RdfRepository rdfRepository,
                                            boolean init)

Determine instant from which to start polling.

Parameters:

startInstant - Instant passed from command-line

rdfRepository - RDF repository that may contain the timestamp we left off last time

init - Should we record the initial instant to the repository?

Returns:

Instant with which to start polling