Package org.rumbledb.runtime.primary

Class ArrayRuntimeIterator

java.lang.Object

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

org.rumbledb.runtime.plan.ItemRuntimePlan

org.rumbledb.runtime.AbstractAtMostOneItemRuntimePlan

org.rumbledb.runtime.primary.ArrayRuntimeIterator

All Implemented Interfaces:

Serializable, AtMostOneLocalRuntimePlan<Item>, LocalRuntimePlan<Item>, NativeQueryRuntimePlan

public class ArrayRuntimeIterator
extends AbstractAtMostOneItemRuntimePlan
implements NativeQueryRuntimePlan

See Also:

• Serialized Form

Field Summary

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

staticContext

Constructor Summary

Constructors

Constructor	Description
ArrayRuntimeIterator(List<? extends ItemRuntimePlan> memberIterators, boolean isFixedSlotsArrayConstructor, RuntimeStaticContext staticContext, boolean mutable)	Square array constructor: each child iterator produces one member (possibly a sequence).
ArrayRuntimeIterator(ItemRuntimePlan arrayItems, RuntimeStaticContext staticContext, boolean mutable)	Curly array constructor: single child whose items become singleton members.

Method Summary

Modifier and Type	Method	Description
Item	evaluateAtMostOne(DynamicContext dynamicContext)	Evaluates the plan without allocating a cursor.
NativeClauseContext	generateNativeQuery(NativeClauseContext nativeClauseContext)

Methods inherited from class org.rumbledb.runtime.AbstractAtMostOneItemRuntimePlan

createNativeCursor

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

ArrayRuntimeIterator

public ArrayRuntimeIterator(ItemRuntimePlan arrayItems,
 RuntimeStaticContext staticContext,
 boolean mutable)

Curly array constructor: single child whose items become singleton members.

ArrayRuntimeIterator

public ArrayRuntimeIterator(List<? extends ItemRuntimePlan> memberIterators,
 boolean isFixedSlotsArrayConstructor,
 RuntimeStaticContext staticContext,
 boolean mutable)

Square array constructor: each child iterator produces one member (possibly a sequence).

Method Details

evaluateAtMostOne

public Item evaluateAtMostOne(DynamicContext dynamicContext)

Description copied from interface: AtMostOneLocalRuntimePlan

Evaluates the plan without allocating a cursor.

Specified by:

evaluateAtMostOne in interface AtMostOneLocalRuntimePlan<Item>

Specified by:

evaluateAtMostOne in class AbstractAtMostOneItemRuntimePlan

Parameters:

dynamicContext - the dynamic context for the evaluation

Returns:

the value, or null for the empty sequence

generateNativeQuery

public NativeClauseContext generateNativeQuery(NativeClauseContext nativeClauseContext)

Specified by:

generateNativeQuery in interface NativeQueryRuntimePlan