Package org.eclipse.rdf4j.collection.factory.impl

Class DefaultCollectionFactory

java.lang.Object

org.eclipse.rdf4j.collection.factory.impl.DefaultCollectionFactory

All Implemented Interfaces:

AutoCloseable, CollectionFactory

public class DefaultCollectionFactory
extends Object
implements CollectionFactory

A DefaultCollectionFactory that provides lists/sets/maps using standard common java in memory types

Constructor Summary

Constructors

Constructor	Description
DefaultCollectionFactory()

Method Summary

Modifier and Type	Method	Description
void	close()
BindingSetKey	createBindingSetKey(BindingSet bindingSet, List<Function<BindingSet,Value>> getValues, ToIntFunction<BindingSet> hashOfBindingSetCalculator)
<E> Map<BindingSetKey,E>	createGroupByMap()
<T> List<T>	createList()
<K, V> Map<K,V>	createMap()
<T> Queue<T>	createQueue()
<T> Set<T>	createSet()
Set<BindingSet>	createSetOfBindingSets(Supplier<MutableBindingSet> create, Function<String,Predicate<BindingSet>> getHas, Function<String,Function<BindingSet,Value>> getget, Function<String,BiConsumer<Value,MutableBindingSet>> getSet)	Allows optimizations beyond what would otherwise be possible, regarding disk access and storage.
<V> Map<Value,V>	createValueKeyedMap()
List<Value>	createValueList()
Queue<Value>	createValueQueue()
Set<Value>	createValueSet()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.rdf4j.collection.factory.api.CollectionFactory

createBindingSetQueue, createBindingSetQueue, createSetOfBindingSets, hashAValue, hashOfBindingSetFuntion

Constructor Details

DefaultCollectionFactory

public DefaultCollectionFactory()

Method Details

createList

public <T> List<T> createList()

Specified by:

createList in interface CollectionFactory

Type Parameters:

T - of the list

Returns:

a list that may be optimised and/or disk based

createValueList

public List<Value> createValueList()

Specified by:

createValueList in interface CollectionFactory

Returns:

a list that may be optimised and/or disk based for Values only

createSet

public <T> Set<T> createSet()

Specified by:

createSet in interface CollectionFactory

Type Parameters:

T - of the set

Returns:

a set that may be optimised and/or disk based

createValueSet

public Set<Value> createValueSet()

Specified by:

createValueSet in interface CollectionFactory

Returns:

a set that may be optimised and/or disk based for Values

createSetOfBindingSets

public Set<BindingSet> createSetOfBindingSets(Supplier<MutableBindingSet> create,
 Function<String,Predicate<BindingSet>> getHas,
 Function<String,Function<BindingSet,Value>> getget,
 Function<String,BiConsumer<Value,MutableBindingSet>> getSet)

Description copied from interface: CollectionFactory

Allows optimizations beyond what would otherwise be possible, regarding disk access and storage.

Specified by:

createSetOfBindingSets in interface CollectionFactory

Parameters:

create - a supplier that makes bindingsets

Returns:

a set that may be optimised and/or disk based

createMap

public <K,
V> Map<K,V> createMap()

Specified by:

createMap in interface CollectionFactory

Type Parameters:

K - key type

V - value type

Returns:

a map

createValueKeyedMap

public <V> Map<Value,V> createValueKeyedMap()

Specified by:

createValueKeyedMap in interface CollectionFactory

Type Parameters:

V - value type

Returns:

a map

createQueue

public <T> Queue<T> createQueue()

Specified by:

createQueue in interface CollectionFactory

Type Parameters:

T - of the contents of the queue

Returns:

a new queue

createValueQueue

public Queue<Value> createValueQueue()

Specified by:

createValueQueue in interface CollectionFactory

Returns:

a new queue

close

public void close()
           throws RDF4JException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface CollectionFactory

Throws:

RDF4JException

createGroupByMap

public <E> Map<BindingSetKey,E> createGroupByMap()

Specified by:

createGroupByMap in interface CollectionFactory

createBindingSetKey

public BindingSetKey createBindingSetKey(BindingSet bindingSet,
 List<Function<BindingSet,Value>> getValues,
 ToIntFunction<BindingSet> hashOfBindingSetCalculator)

Specified by:

createBindingSetKey in interface CollectionFactory