Package org.neo4j.gds.core.loading

Class AdjacencyBuffer

java.lang.Object

org.neo4j.gds.core.loading.AdjacencyBuffer

public final class AdjacencyBuffer
extends java.lang.Object

Wraps a paged representation of ChunkedAdjacencyListss which store the target ids for each node during import. An instance of this class exists exactly once per relationship type and has the following responsibilities:

• Receives raw relationship records from relationship batch buffers via SingleTypeRelationshipImporter
• Compresses raw records into compressed long arrays
• Creates tasks that write compressed long arrays into the final adjacency list using a specific compressor

Method Summary

Modifier and Type	Method	Description
static org.neo4j.gds.core.utils.mem.MemoryEstimation	memoryEstimation(long avgDegree, long nodeCount, int propertyCount, int concurrency)
static org.neo4j.gds.core.utils.mem.MemoryEstimation	memoryEstimation(org.neo4j.gds.RelationshipType relationshipType, int propertyCount, boolean undirected)
static AdjacencyBuffer	of(SingleTypeRelationshipImporter.ImportMetaData importMetaData, AdjacencyCompressorFactory adjacencyCompressorFactory, ImportSizing importSizing)

Methods inherited from class java.lang.Object

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

Method Detail

memoryEstimation

public static org.neo4j.gds.core.utils.mem.MemoryEstimation memoryEstimation(org.neo4j.gds.RelationshipType relationshipType,
                                                                             int propertyCount,
                                                                             boolean undirected)

memoryEstimation

public static org.neo4j.gds.core.utils.mem.MemoryEstimation memoryEstimation(long avgDegree,
                                                                             long nodeCount,
                                                                             int propertyCount,
                                                                             int concurrency)

of

@Factory
public static AdjacencyBuffer of(SingleTypeRelationshipImporter.ImportMetaData importMetaData,
                                 AdjacencyCompressorFactory adjacencyCompressorFactory,
                                 ImportSizing importSizing)