Package org.rumbledb.runtime.misc

Class RangeOperationIterator

java.lang.Object

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

org.rumbledb.runtime.plan.ItemRuntimePlan

org.rumbledb.runtime.misc.RangeOperationIterator

All Implemented Interfaces:

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

public class RangeOperationIterator
extends ItemRuntimePlan
implements LocalRuntimePlan<Item>, DataFrameRuntimePlan<Item>, NativeQueryRuntimePlan

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final record	RangeOperationIterator.Bounds	Exact inclusive endpoints; an empty range has first greater than last.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	PARTITION_SIZE

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

staticContext

Constructor Summary

Constructors

Constructor	Description
RangeOperationIterator(ItemRuntimePlan leftIterator, ItemRuntimePlan rightiterator, RuntimeStaticContext staticContext)

Method Summary

Modifier and Type	Method	Description
static HomogeneousItemDataFrame	createInterval(RangeOperationIterator.Bounds bounds, RuntimeStaticContext staticContext)
static HomogeneousItemDataFrame	createLongInterval(long left, long right, RuntimeStaticContext staticContext)	Creates a dataframe with a sequence of increasing numbers, of type long.
Cursor<Item>	createNativeCursor(DynamicContext context)	Creates an independent cursor for one native local evaluation.
HomogeneousItemDataFrame	createNativeDataFrame(DynamicContext context)	Builds the DataFrame for one evaluation.
NativeClauseContext	generateNativeQuery(NativeClauseContext nativeClauseContext)
RangeOperationIterator.Bounds	getBounds(DynamicContext context)	Evaluates endpoints once, without constructing or scanning the range.

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

Field Details

PARTITION_SIZE

public static final int PARTITION_SIZE

See Also:

• Constant Field Values

Constructor Details

RangeOperationIterator

public RangeOperationIterator(ItemRuntimePlan leftIterator,
 ItemRuntimePlan rightiterator,
 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

getBounds

public RangeOperationIterator.Bounds getBounds(DynamicContext context)

Evaluates endpoints once, without constructing or scanning the range.

createNativeDataFrame

public HomogeneousItemDataFrame createNativeDataFrame(DynamicContext context)

Description copied from interface: DataFrameRuntimePlan

Builds the DataFrame for one evaluation.

Specified by:

createNativeDataFrame in interface DataFrameRuntimePlan<Item>

Parameters:

context - the dynamic context for that evaluation

Returns:

the resulting DataFrame

createInterval

public static HomogeneousItemDataFrame createInterval(RangeOperationIterator.Bounds bounds,
 RuntimeStaticContext staticContext)

createLongInterval

public static HomogeneousItemDataFrame createLongInterval(long left,
 long right,
 RuntimeStaticContext staticContext)

Creates a dataframe with a sequence of increasing numbers, of type long.

Parameters:

left - the left bound(inclusive).

right - the right bound (inclusive).

Returns:

generateNativeQuery

public NativeClauseContext generateNativeQuery(NativeClauseContext nativeClauseContext)

Specified by:

generateNativeQuery in interface NativeQueryRuntimePlan