Package org.neo4j.gds.api

Class IdMapAdapter

java.lang.Object

org.neo4j.gds.api.IdMapAdapter

All Implemented Interfaces:

BatchNodeIterable, IdMap, NodeIterator, PartialIdMap

Direct Known Subclasses:

HighLimitIdMap

public abstract class IdMapAdapter
extends java.lang.Object
implements IdMap

Nested Class Summary

Nested classes/interfaces inherited from interface org.neo4j.gds.api.BatchNodeIterable

BatchNodeIterable.BitSetIdIterator, BatchNodeIterable.IdIterable, BatchNodeIterable.IdIterator

Nested classes/interfaces inherited from interface org.neo4j.gds.api.IdMap

IdMap.NodeLabelConsumer

Field Summary

Fields inherited from interface org.neo4j.gds.api.IdMap

NOT_FOUND, START_NODE_ID

Constructor Summary

Constructors

Constructor	Description
IdMapAdapter(IdMap idMap)

Method Summary

Modifier and Type	Method	Description
java.util.Set<org.neo4j.gds.NodeLabel>	availableNodeLabels()
java.util.Collection<PrimitiveLongIterable>	batchIterables(long batchSize)
boolean	contains(long originalNodeId)	Returns true iff the Neo4j id is mapped, otherwise false.
void	forEachNode(java.util.function.LongPredicate consumer)	Iterate over each nodeId
void	forEachNodeLabel(long mappedNodeId, IdMap.NodeLabelConsumer consumer)
boolean	hasLabel(long mappedNodeId, org.neo4j.gds.NodeLabel label)
long	highestOriginalId()	The highest id that is mapped in this id mapping.
long	nodeCount()	Number of mapped nodeIds.
long	nodeCount(org.neo4j.gds.NodeLabel nodeLabel)	Number of mapped nodeIds for a specific node label.
java.util.PrimitiveIterator.OfLong	nodeIterator()
java.util.PrimitiveIterator.OfLong	nodeIterator(java.util.Set<org.neo4j.gds.NodeLabel> labels)
java.util.List<org.neo4j.gds.NodeLabel>	nodeLabels(long mappedNodeId)
IdMap	rootIdMap()	Returns the original node mapping if the current node mapping is filtered, otherwise it returns itself.
java.util.OptionalLong	rootNodeCount()	Number of mapped node ids in the root mapping.
long	toMappedNodeId(long originalNodeId)	Maps an original node id to a mapped node id.
long	toOriginalNodeId(long mappedNodeId)	Returns the original node id for the given mapped node id.
long	toRootNodeId(long mappedNodeId)	Maps a filtered mapped node id to its root mapped node id.
java.util.Optional<FilteredIdMap>	withFilteredLabels(java.util.Collection<org.neo4j.gds.NodeLabel> nodeLabels, int concurrency)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.neo4j.gds.api.IdMap

safeToMappedNodeId

Constructor Detail

IdMapAdapter

public IdMapAdapter(IdMap idMap)

Method Detail

batchIterables

public java.util.Collection<PrimitiveLongIterable> batchIterables(long batchSize)

Specified by:

batchIterables in interface BatchNodeIterable

Returns:

a collection of iterables over every node, partitioned by the given batch size.

toMappedNodeId

public long toMappedNodeId(long originalNodeId)

Description copied from interface: PartialIdMap

Maps an original node id to a mapped node id. In case of nested id maps, the mapped node id is always in the space of the innermost mapping.

Specified by:

toMappedNodeId in interface PartialIdMap

Parameters:

originalNodeId - must be smaller or equal to the id returned by IdMap.highestOriginalId()

toOriginalNodeId

public long toOriginalNodeId(long mappedNodeId)

Description copied from interface: IdMap

Returns the original node id for the given mapped node id. The original node id is typically the Neo4j node id. This method is guaranteed to always return the Neo4j id, regardless of the given mapped node id refers to a filtered node id space or a regular / unfiltered node id space.

Specified by:

toOriginalNodeId in interface IdMap

toRootNodeId

public long toRootNodeId(long mappedNodeId)

Description copied from interface: IdMap

Maps a filtered mapped node id to its root mapped node id. This is necessary for nested (filtered) id mappings. If this mapping is a nested mapping, this method returns the root mapped node id of the parent mapping. For the root mapping this method returns the given node id.

Specified by:

toRootNodeId in interface IdMap

rootIdMap

public IdMap rootIdMap()

Description copied from interface: IdMap

Returns the original node mapping if the current node mapping is filtered, otherwise it returns itself.

Specified by:

rootIdMap in interface IdMap

contains

public boolean contains(long originalNodeId)

Description copied from interface: IdMap

Returns true iff the Neo4j id is mapped, otherwise false.

Specified by:

contains in interface IdMap

nodeCount

public long nodeCount()

Description copied from interface: IdMap

Number of mapped nodeIds.

Specified by:

nodeCount in interface IdMap

nodeCount

public long nodeCount(org.neo4j.gds.NodeLabel nodeLabel)

Description copied from interface: IdMap

Number of mapped nodeIds for a specific node label.

Specified by:

nodeCount in interface IdMap

rootNodeCount

public java.util.OptionalLong rootNodeCount()

Description copied from interface: PartialIdMap

Number of mapped node ids in the root mapping. This is necessary for nested (filtered) id mappings.

Specified by:

rootNodeCount in interface PartialIdMap

highestOriginalId

public long highestOriginalId()

Description copied from interface: IdMap

The highest id that is mapped in this id mapping.

The value is the upper bound of the original node id space.

Specified by:

highestOriginalId in interface IdMap

forEachNode

public void forEachNode(java.util.function.LongPredicate consumer)

Description copied from interface: NodeIterator

Iterate over each nodeId

Specified by:

forEachNode in interface NodeIterator

nodeIterator

public java.util.PrimitiveIterator.OfLong nodeIterator()

Specified by:

nodeIterator in interface NodeIterator

nodeIterator

public java.util.PrimitiveIterator.OfLong nodeIterator(java.util.Set<org.neo4j.gds.NodeLabel> labels)

Specified by:

nodeIterator in interface NodeIterator

nodeLabels

public java.util.List<org.neo4j.gds.NodeLabel> nodeLabels(long mappedNodeId)

Specified by:

nodeLabels in interface IdMap

forEachNodeLabel

public void forEachNodeLabel(long mappedNodeId,
                             IdMap.NodeLabelConsumer consumer)

Specified by:

forEachNodeLabel in interface IdMap

availableNodeLabels

public java.util.Set<org.neo4j.gds.NodeLabel> availableNodeLabels()

Specified by:

availableNodeLabels in interface IdMap

hasLabel

public boolean hasLabel(long mappedNodeId,
                        org.neo4j.gds.NodeLabel label)

Specified by:

hasLabel in interface IdMap

withFilteredLabels

public java.util.Optional<FilteredIdMap> withFilteredLabels(java.util.Collection<org.neo4j.gds.NodeLabel> nodeLabels,
                                                            int concurrency)

Specified by:

withFilteredLabels in interface IdMap