Package org.rumbledb.runtime.typing

Class TreatIterator

java.lang.Object

org.rumbledb.runtime.plan.RuntimePlan<Item>

org.rumbledb.runtime.plan.ItemRuntimePlan

org.rumbledb.runtime.typing.TreatIterator

All Implemented Interfaces:

Serializable, DataFrameRuntimePlan<Item>, LocalRuntimePlan<Item>, NativeQueryRuntimePlan, RDDRuntimePlan<Item>, UpdatingRuntimePlan

public class TreatIterator
extends ItemRuntimePlan
implements LocalRuntimePlan<Item>, RDDRuntimePlan<Item>, DataFrameRuntimePlan<Item>, UpdatingRuntimePlan, NativeQueryRuntimePlan

See Also:

• Serialized Form

Field Summary

Fields inherited from class org.rumbledb.runtime.plan.RuntimePlan

staticContext

Constructor Summary

Constructors

Constructor	Description
TreatIterator(ItemRuntimePlan iterator, SequenceType sequenceType, ErrorCode errorCode, RuntimeStaticContext staticContext)

Method Summary

Modifier and Type	Method	Description
static HomogeneousItemDataFrame	convertToDataFrame(org.apache.spark.api.java.JavaRDD<?> rdd, ItemType itemType, RuntimeStaticContext staticContext)	Converts a homogeneous RDD of atomic values to a DataFrame
Cursor<Item>	createNativeCursor(DynamicContext context)	Creates an independent cursor for one native local evaluation.
HomogeneousItemDataFrame	createNativeDataFrame(DynamicContext dynamicContext)	Builds the DataFrame for one evaluation.
org.apache.spark.api.java.JavaRDD<Item>	createNativeRDD(DynamicContext dynamicContext)	Builds the RDD for one evaluation.
NativeClauseContext	generateNativeQuery(NativeClauseContext nativeClauseContext)
static ItemType	getItemType(org.apache.spark.sql.Dataset<org.apache.spark.sql.Row> df)
PendingUpdateList	getPendingUpdateList(DynamicContext context)

Methods inherited from class org.rumbledb.runtime.plan.ItemRuntimePlan

getChild, getChildren, getStaticType, getVariableDependencies, isSparkJobNeeded, print

Methods inherited from class org.rumbledb.runtime.plan.RuntimePlan

getConfiguration, getCursor, getDataFrame, getMetadata, getRDD, getRuntimeStaticContext, materialize, materializeAtMost, materializeAtMostOne, materializeExactlyOne, materializeFirstOrNull

Methods inherited from class java.lang.Object

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

Constructor Details

TreatIterator

public TreatIterator(ItemRuntimePlan iterator,
 SequenceType sequenceType,
 ErrorCode errorCode,
 RuntimeStaticContext staticContext)

Method Details

createNativeCursor

public Cursor<Item> createNativeCursor(DynamicContext context)

Description copied from interface: LocalRuntimePlan

Creates an independent cursor for one native local evaluation.

Specified by:

createNativeCursor in interface LocalRuntimePlan<Item>

Parameters:

context - the dynamic context for that evaluation

Returns:

an unopened cursor

createNativeRDD

public org.apache.spark.api.java.JavaRDD<Item> createNativeRDD(DynamicContext dynamicContext)

Description copied from interface: RDDRuntimePlan

Builds the RDD for one evaluation.

Specified by:

createNativeRDD in interface RDDRuntimePlan<Item>

Parameters:

dynamicContext - the dynamic context for that evaluation

Returns:

the resulting RDD

getItemType

public static ItemType getItemType(org.apache.spark.sql.Dataset<org.apache.spark.sql.Row> df)

createNativeDataFrame

public HomogeneousItemDataFrame createNativeDataFrame(DynamicContext dynamicContext)

Description copied from interface: DataFrameRuntimePlan

Builds the DataFrame for one evaluation.

Specified by:

createNativeDataFrame in interface DataFrameRuntimePlan<Item>

Parameters:

dynamicContext - the dynamic context for that evaluation

Returns:

the resulting DataFrame

getPendingUpdateList

public PendingUpdateList getPendingUpdateList(DynamicContext context)

Specified by:

getPendingUpdateList in interface UpdatingRuntimePlan

convertToDataFrame

public static HomogeneousItemDataFrame convertToDataFrame(org.apache.spark.api.java.JavaRDD<?> rdd,
 ItemType itemType,
 RuntimeStaticContext staticContext)

Converts a homogeneous RDD of atomic values to a DataFrame

Parameters:

rdd - the RDD containing the atomic values.

itemType - the dynamic type of these values.

Returns:

generateNativeQuery

public NativeClauseContext generateNativeQuery(NativeClauseContext nativeClauseContext)

Specified by:

generateNativeQuery in interface NativeQueryRuntimePlan