Class MapDb3CollectionFactory
- java.lang.Object
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- org.eclipse.rdf4j.collection.factory.mapdb.MapDb3CollectionFactory
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- All Implemented Interfaces:
AutoCloseable
,CollectionFactory
public class MapDb3CollectionFactory extends Object implements CollectionFactory
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Nested Class Summary
Nested Classes Modifier and Type Class Description protected static class
MapDb3CollectionFactory.CommitingMap<K,V>
protected static class
MapDb3CollectionFactory.CommitingSet<T>
protected class
MapDb3CollectionFactory.MemoryTillSizeXQueue<V>
Only create a disk based set once the contents are large enough that it starts to pay off.protected class
MapDb3CollectionFactory.MemoryTillSizeXSet<V>
Only create a disk based set once the contents are large enough that it starts to pay off.protected static class
MapDb3CollectionFactory.RDF4jMapDB3Exception
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Field Summary
Fields Modifier and Type Field Description protected long
colectionId
protected org.mapdb.DB
db
protected long
iterationCacheSyncThreshold
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Constructor Summary
Constructors Constructor Description MapDb3CollectionFactory(long iterationCacheSyncThreshold)
MapDb3CollectionFactory(long iterationCacheSyncThreshold, CollectionFactory delegate)
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Method Summary
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.eclipse.rdf4j.collection.factory.api.CollectionFactory
createBindingSetQueue, createSetOfBindingSets, hashAValue, hashOfBindingSetFuntion
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Constructor Detail
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MapDb3CollectionFactory
public MapDb3CollectionFactory(long iterationCacheSyncThreshold)
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MapDb3CollectionFactory
public MapDb3CollectionFactory(long iterationCacheSyncThreshold, CollectionFactory delegate)
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Method Detail
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init
protected void init()
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createList
public <T> List<T> createList()
- Specified by:
createList
in interfaceCollectionFactory
- Type Parameters:
T
- of the list- Returns:
- a list that may be optimised and/or disk based
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createValueList
public List<Value> createValueList()
- Specified by:
createValueList
in 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:CollectionFactory
Allows optimizations beyond what would otherwise be possible, regarding disk access and storage.- Specified by:
createSetOfBindingSets
in interfaceCollectionFactory
- Parameters:
create
- a supplier that makes bindingsets- Returns:
- a set that may be optimised and/or disk based
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createSet
public <T> Set<T> createSet()
- Specified by:
createSet
in interfaceCollectionFactory
- Type Parameters:
T
- of the set- Returns:
- a set that may be optimised and/or disk based
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createValueSet
public Set<Value> createValueSet()
- Specified by:
createValueSet
in interfaceCollectionFactory
- Returns:
- a set that may be optimised and/or disk based for Values
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createMap
public <K,V> Map<K,V> createMap()
- Specified by:
createMap
in interfaceCollectionFactory
- Type Parameters:
K
- key typeV
- value type- Returns:
- a map
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createValueKeyedMap
public <V> Map<Value,V> createValueKeyedMap()
- Specified by:
createValueKeyedMap
in interfaceCollectionFactory
- Type Parameters:
V
- value type- Returns:
- a map
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createQueue
public <T> Queue<T> createQueue()
- Specified by:
createQueue
in interfaceCollectionFactory
- Type Parameters:
T
- of the contents of the queue- Returns:
- a new queue
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createValueQueue
public Queue<Value> createValueQueue()
- Specified by:
createValueQueue
in 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:
createBindingSetQueue
in interfaceCollectionFactory
- Returns:
- a new queue that may be optimized and may use the functions passed in.
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close
public void close() throws RDF4JException
- Specified by:
close
in interfaceAutoCloseable
- Specified by:
close
in interfaceCollectionFactory
- Throws:
RDF4JException
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createGroupByMap
public <E> Map<BindingSetKey,E> createGroupByMap()
- Specified by:
createGroupByMap
in interfaceCollectionFactory
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createBindingSetKey
public final BindingSetKey createBindingSetKey(BindingSet bindingSet, List<Function<BindingSet,Value>> getValues, ToIntFunction<BindingSet> hashOfBindingSetCalculator)
- Specified by:
createBindingSetKey
in 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()
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createValueSerializer
protected org.mapdb.Serializer<Value> createValueSerializer()
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createBindingSetKeySerializer
protected final org.mapdb.Serializer<BindingSetKey> createBindingSetKeySerializer()
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