Class MapDb3CollectionFactory
java.lang.Object
org.eclipse.rdf4j.collection.factory.mapdb.MapDb3CollectionFactory
- All Implemented Interfaces:
AutoCloseable,CollectionFactory
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Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionprotected static final classprotected static final classprotected classOnly create a disk based set once the contents are large enough that it starts to pay off.protected classOnly create a disk based set once the contents are large enough that it starts to pay off.protected static final class -
Field Summary
FieldsModifier and TypeFieldDescriptionprotected longprotected org.mapdb.DBprotected final long -
Constructor Summary
ConstructorsConstructorDescriptionMapDb3CollectionFactory(long iterationCacheSyncThreshold) MapDb3CollectionFactory(long iterationCacheSyncThreshold, CollectionFactory delegate) -
Method Summary
Modifier and TypeMethodDescriptionvoidclose()protected <T> org.mapdb.Serializer<T>final BindingSetKeycreateBindingSetKey(BindingSet bindingSet, List<Function<BindingSet, Value>> getValues, ToIntFunction<BindingSet> hashOfBindingSetCalculator) protected final org.mapdb.Serializer<BindingSetKey>createBindingSetQueue(Supplier<MutableBindingSet> create, Function<String, Predicate<BindingSet>> getHas, Function<String, Function<BindingSet, Value>> getget, Function<String, BiConsumer<Value, MutableBindingSet>> getSet) protected org.mapdb.Serializer<BindingSet>createBindingSetSerializer(Supplier<MutableBindingSet> create, Function<String, Predicate<BindingSet>> getHas, Function<String, Function<BindingSet, Value>> getGet, Function<String, BiConsumer<Value, MutableBindingSet>> getSet) These methods should be overriding in case a store can deliver a better serialization protocol.<E> Map<BindingSetKey,E> <T> List<T><K,V> Map<K, V> <T> Queue<T><T> Set<T>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.protected org.mapdb.Serializer<Value>protected voidinit()Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitMethods inherited from interface org.eclipse.rdf4j.collection.factory.api.CollectionFactory
createBindingSetQueue, createSetOfBindingSets, hashAValue, hashOfBindingSetFuntion
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Field Details
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db
protected volatile org.mapdb.DB db -
colectionId
protected volatile long colectionId -
iterationCacheSyncThreshold
protected final long iterationCacheSyncThreshold
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Constructor Details
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MapDb3CollectionFactory
public MapDb3CollectionFactory(long iterationCacheSyncThreshold) -
MapDb3CollectionFactory
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Method Details
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init
protected void init() -
createList
- Specified by:
createListin interfaceCollectionFactory- Type Parameters:
T- of the list- Returns:
- a list that may be optimised and/or disk based
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createValueList
- Specified by:
createValueListin interfaceCollectionFactory- Returns:
- a list that may be optimised and/or disk based for Values only
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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:CollectionFactoryAllows optimizations beyond what would otherwise be possible, regarding disk access and storage.- Specified by:
createSetOfBindingSetsin interfaceCollectionFactory- Parameters:
create- a supplier that makes bindingsets- Returns:
- a set that may be optimised and/or disk based
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createSet
- Specified by:
createSetin interfaceCollectionFactory- Type Parameters:
T- of the set- Returns:
- a set that may be optimised and/or disk based
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createValueSet
- Specified by:
createValueSetin interfaceCollectionFactory- Returns:
- a set that may be optimised and/or disk based for Values
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createMap
- Specified by:
createMapin interfaceCollectionFactory- Type Parameters:
K- key typeV- value type- Returns:
- a map
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createValueKeyedMap
- Specified by:
createValueKeyedMapin interfaceCollectionFactory- Type Parameters:
V- value type- Returns:
- a map
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createQueue
- Specified by:
createQueuein interfaceCollectionFactory- Type Parameters:
T- of the contents of the queue- Returns:
- a new queue
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createValueQueue
- Specified by:
createValueQueuein interfaceCollectionFactory- Returns:
- a new queue
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createBindingSetQueue
@Experimental public Queue<BindingSet> createBindingSetQueue(Supplier<MutableBindingSet> create, Function<String, Predicate<BindingSet>> getHas, Function<String, Function<BindingSet, Value>> getget, Function<String, BiConsumer<Value, MutableBindingSet>> getSet) - Specified by:
createBindingSetQueuein interfaceCollectionFactory- Returns:
- a new queue that may be optimized and may use the functions passed in.
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close
- Specified by:
closein interfaceAutoCloseable- Specified by:
closein interfaceCollectionFactory- Throws:
RDF4JException
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createGroupByMap
- Specified by:
createGroupByMapin interfaceCollectionFactory
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createBindingSetKey
public final BindingSetKey createBindingSetKey(BindingSet bindingSet, List<Function<BindingSet, Value>> getValues, ToIntFunction<BindingSet> hashOfBindingSetCalculator) - Specified by:
createBindingSetKeyin interfaceCollectionFactory
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createBindingSetSerializer
protected org.mapdb.Serializer<BindingSet> createBindingSetSerializer(Supplier<MutableBindingSet> create, Function<String, Predicate<BindingSet>> getHas, Function<String, Function<BindingSet, Value>> getGet, Function<String, BiConsumer<Value, MutableBindingSet>> getSet) These methods should be overriding in case a store can deliver a better serialization protocol.- Parameters:
getGet-getHas-create-
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createAnySerializer
protected <T> org.mapdb.Serializer<T> createAnySerializer() -
createValueSerializer
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createBindingSetKeySerializer
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