Package org.apache.spark.sql.pipelines.graph

Class DataflowGraph

Object

org.apache.spark.sql.pipelines.graph.DataflowGraph

All Implemented Interfaces:

Serializable, org.apache.spark.internal.Logging, GraphOperations, GraphValidations, scala.Equals, scala.Product

public class DataflowGraph
extends Object
implements GraphOperations, GraphValidations, scala.Product, Serializable

DataflowGraph represents the core graph structure for Spark declarative pipelines. It manages the relationships between logical flows, tables, and views, providing operations for graph traversal, validation, and transformation.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.spark.internal.Logging

org.apache.spark.internal.Logging.LogStringContext, org.apache.spark.internal.Logging.SparkShellLoggingFilter

Constructor Summary

Constructors

Constructor	Description
DataflowGraph(scala.collection.immutable.Seq<Flow> flows, scala.collection.immutable.Seq<Table> tables, scala.collection.immutable.Seq<View> views)

Method Summary

Modifier and Type	Method	Description
scala.collection.immutable.Map<org.apache.spark.sql.catalyst.TableIdentifier,Flow>	flow()
scala.collection.immutable.Map<org.apache.spark.sql.catalyst.TableIdentifier,FlowNode>	flowNodes()	A map from flow identifier to `FlowNode`, which contains the input/output nodes.
scala.collection.immutable.Seq<Flow>	flows()
scala.collection.immutable.Map<org.apache.spark.sql.catalyst.TableIdentifier,scala.collection.immutable.Seq<Flow>>	flowsTo()
scala.collection.immutable.Map<org.apache.spark.sql.catalyst.TableIdentifier,StructType>	inferredSchema()
scala.collection.immutable.Set<org.apache.spark.sql.catalyst.TableIdentifier>	inputIdentifiers()
scala.collection.immutable.Set<org.apache.spark.sql.catalyst.TableIdentifier>	materializedFlowIdentifiers()	The identifiers of materializedFlows().
scala.collection.immutable.Seq<ResolvedFlow>	materializedFlows()
scala.collection.immutable.Map<org.apache.spark.sql.catalyst.TableIdentifier,Output>	output()
scala.collection.immutable.Seq<PersistedView>	persistedViews()
scala.collection.immutable.Map<org.apache.spark.sql.catalyst.TableIdentifier,ResolutionFailedFlow>	resolutionFailedFlow()
scala.collection.immutable.Seq<ResolutionFailedFlow>	resolutionFailedFlows()
DataflowGraph	resolve()
boolean	resolved()	Returns true iff all Flows are successfully analyzed.
scala.collection.immutable.Map<org.apache.spark.sql.catalyst.TableIdentifier,ResolvedFlow>	resolvedFlow()
scala.collection.immutable.Seq<ResolvedFlow>	resolvedFlows()
scala.collection.immutable.Map<org.apache.spark.sql.catalyst.TableIdentifier,Table>	table()
scala.collection.immutable.Seq<Table>	tables()
DataflowGraph	validate()	Ensure that the DataflowGraph is valid and throws errors if not.
scala.collection.immutable.Map<org.apache.spark.sql.catalyst.TableIdentifier,View>	view()
scala.collection.immutable.Seq<View>	views()

Methods inherited from class java.lang.Object

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

Methods inherited from interface scala.Equals

canEqual, equals

Methods inherited from interface org.apache.spark.sql.pipelines.graph.GraphOperations

dfsInternal, downstreamFlows, reachabilitySet, reachabilitySet, upstreamDatasets, upstreamDatasets, upstreamFlows

Methods inherited from interface org.apache.spark.sql.pipelines.graph.GraphValidations

detectCycle, validateFlowStreamingness, validateGraphIsTopologicallySorted, validateMultiQueryTables, validatePersistedViewSources, validateSuccessfulFlowAnalysis, validateTablesAreResettable, validateTablesAreResettable, validateUserSpecifiedSchemas

Methods inherited from interface org.apache.spark.internal.Logging

initializeForcefully, initializeLogIfNecessary, initializeLogIfNecessary, initializeLogIfNecessary$default$2, isTraceEnabled, log, logBasedOnLevel, logDebug, logDebug, logDebug, logDebug, logError, logError, logError, logError, logInfo, logInfo, logInfo, logInfo, logName, LogStringContext, logTrace, logTrace, logTrace, logTrace, logWarning, logWarning, logWarning, logWarning, org$apache$spark$internal$Logging$$log_, org$apache$spark$internal$Logging$$log__$eq, withLogContext

Methods inherited from interface scala.Product

productArity, productElement, productElementName, productElementNames, productIterator, productPrefix

Constructor Details

DataflowGraph

public DataflowGraph(scala.collection.immutable.Seq<Flow> flows,
 scala.collection.immutable.Seq<Table> tables,
 scala.collection.immutable.Seq<View> views)

Method Details

flowNodes

public scala.collection.immutable.Map<org.apache.spark.sql.catalyst.TableIdentifier,FlowNode> flowNodes()

Description copied from interface: GraphOperations

A map from flow identifier to `FlowNode`, which contains the input/output nodes.

Specified by:

flowNodes in interface GraphOperations

flows

public scala.collection.immutable.Seq<Flow> flows()

tables

public scala.collection.immutable.Seq<Table> tables()

views

public scala.collection.immutable.Seq<View> views()

output

public scala.collection.immutable.Map<org.apache.spark.sql.catalyst.TableIdentifier,Output> output()

materializedFlows

public scala.collection.immutable.Seq<ResolvedFlow> materializedFlows()

materializedFlowIdentifiers

public scala.collection.immutable.Set<org.apache.spark.sql.catalyst.TableIdentifier> materializedFlowIdentifiers()

The identifiers of materializedFlows().

table

public scala.collection.immutable.Map<org.apache.spark.sql.catalyst.TableIdentifier,Table> table()

flow

public scala.collection.immutable.Map<org.apache.spark.sql.catalyst.TableIdentifier,Flow> flow()

view

public scala.collection.immutable.Map<org.apache.spark.sql.catalyst.TableIdentifier,View> view()

persistedViews

public scala.collection.immutable.Seq<PersistedView> persistedViews()

inputIdentifiers

public scala.collection.immutable.Set<org.apache.spark.sql.catalyst.TableIdentifier> inputIdentifiers()

flowsTo

public scala.collection.immutable.Map<org.apache.spark.sql.catalyst.TableIdentifier,scala.collection.immutable.Seq<Flow>> flowsTo()

resolvedFlows

public scala.collection.immutable.Seq<ResolvedFlow> resolvedFlows()

resolvedFlow

public scala.collection.immutable.Map<org.apache.spark.sql.catalyst.TableIdentifier,ResolvedFlow> resolvedFlow()

resolutionFailedFlows

public scala.collection.immutable.Seq<ResolutionFailedFlow> resolutionFailedFlows()

resolutionFailedFlow

public scala.collection.immutable.Map<org.apache.spark.sql.catalyst.TableIdentifier,ResolutionFailedFlow> resolutionFailedFlow()

inferredSchema

public scala.collection.immutable.Map<org.apache.spark.sql.catalyst.TableIdentifier,StructType> inferredSchema()

validate

public DataflowGraph validate()

Ensure that the DataflowGraph is valid and throws errors if not.

resolved

public boolean resolved()

Returns true iff all Flows are successfully analyzed.

resolve

public DataflowGraph resolve()