Package apoc.export.arrow

Class ExportGraphStreamStrategy

java.lang.Object

apoc.export.arrow.ExportGraphStreamStrategy

All Implemented Interfaces:

ExportArrowStrategy<org.neo4j.cypher.export.SubGraph,Stream<apoc.result.ByteArrayResult>>, ExportArrowStreamStrategy<org.neo4j.cypher.export.SubGraph>, ExportGraphStrategy

public class ExportGraphStreamStrategy
extends Object
implements ExportArrowStreamStrategy<org.neo4j.cypher.export.SubGraph>, ExportGraphStrategy

Constructor Summary

Constructors

Constructor	Description
ExportGraphStreamStrategy(org.neo4j.graphdb.GraphDatabaseService db, apoc.Pools pools, org.neo4j.procedure.TerminationGuard terminationGuard, org.neo4j.logging.Log logger)

Method Summary

Modifier and Type	Method	Description
Stream<apoc.result.ByteArrayResult>	export(org.neo4j.cypher.export.SubGraph subGraph, ArrowConfig config)
org.apache.arrow.memory.BufferAllocator	getBufferAllocator()
ExecutorService	getExecutorService()
org.neo4j.graphdb.GraphDatabaseService	getGraphDatabaseApi()
org.neo4j.logging.Log	getLogger()
org.neo4j.procedure.TerminationGuard	getTerminationGuard()
org.apache.arrow.vector.ipc.ArrowWriter	newArrowWriter(org.apache.arrow.vector.VectorSchemaRoot root, OutputStream out)
org.apache.arrow.vector.types.pojo.Schema	schemaFor(List<Map<String,Object>> records)
Iterator<Map<String,Object>>	toIterator(org.neo4j.cypher.export.SubGraph subGraph)

Methods inherited from class java.lang.Object

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

Methods inherited from interface apoc.export.arrow.ExportArrowStrategy

write

Methods inherited from interface apoc.export.arrow.ExportArrowStreamStrategy

convertValue, writeBatch

Methods inherited from interface apoc.export.arrow.ExportGraphStrategy

createConfigMap, entityToMap, schemaFor

Constructor Details

ExportGraphStreamStrategy

public ExportGraphStreamStrategy(org.neo4j.graphdb.GraphDatabaseService db,
 apoc.Pools pools,
 org.neo4j.procedure.TerminationGuard terminationGuard,
 org.neo4j.logging.Log logger)

Method Details

toIterator

public Iterator<Map<String,Object>> toIterator(org.neo4j.cypher.export.SubGraph subGraph)

Specified by:

toIterator in interface ExportArrowStreamStrategy<org.neo4j.cypher.export.SubGraph>

export

public Stream<apoc.result.ByteArrayResult> export(org.neo4j.cypher.export.SubGraph subGraph,
 ArrowConfig config)

Specified by:

export in interface ExportArrowStrategy<org.neo4j.cypher.export.SubGraph,Stream<apoc.result.ByteArrayResult>>

Specified by:

export in interface ExportArrowStreamStrategy<org.neo4j.cypher.export.SubGraph>

getTerminationGuard

public org.neo4j.procedure.TerminationGuard getTerminationGuard()

Specified by:

getTerminationGuard in interface ExportArrowStrategy<org.neo4j.cypher.export.SubGraph,Stream<apoc.result.ByteArrayResult>>

getBufferAllocator

public org.apache.arrow.memory.BufferAllocator getBufferAllocator()

Specified by:

getBufferAllocator in interface ExportArrowStrategy<org.neo4j.cypher.export.SubGraph,Stream<apoc.result.ByteArrayResult>>

getGraphDatabaseApi

public org.neo4j.graphdb.GraphDatabaseService getGraphDatabaseApi()

Specified by:

getGraphDatabaseApi in interface ExportArrowStrategy<org.neo4j.cypher.export.SubGraph,Stream<apoc.result.ByteArrayResult>>

getExecutorService

public ExecutorService getExecutorService()

Specified by:

getExecutorService in interface ExportArrowStrategy<org.neo4j.cypher.export.SubGraph,Stream<apoc.result.ByteArrayResult>>

getLogger

public org.neo4j.logging.Log getLogger()

Specified by:

getLogger in interface ExportArrowStrategy<org.neo4j.cypher.export.SubGraph,Stream<apoc.result.ByteArrayResult>>

newArrowWriter

public org.apache.arrow.vector.ipc.ArrowWriter newArrowWriter(org.apache.arrow.vector.VectorSchemaRoot root,
 OutputStream out)

Specified by:

newArrowWriter in interface ExportArrowStrategy<org.neo4j.cypher.export.SubGraph,Stream<apoc.result.ByteArrayResult>>

Specified by:

newArrowWriter in interface ExportArrowStreamStrategy<org.neo4j.cypher.export.SubGraph>

schemaFor

public org.apache.arrow.vector.types.pojo.Schema schemaFor(List<Map<String,Object>> records)

Specified by:

schemaFor in interface ExportArrowStrategy<org.neo4j.cypher.export.SubGraph,Stream<apoc.result.ByteArrayResult>>

Specified by:

schemaFor in interface ExportArrowStreamStrategy<org.neo4j.cypher.export.SubGraph>