Package org.rumbledb.runtime.xml

Class ComputedAttributeConstructorRuntimeIterator

java.lang.Object

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

org.rumbledb.runtime.plan.ItemRuntimePlan

org.rumbledb.runtime.AbstractAtMostOneItemRuntimePlan

org.rumbledb.runtime.xml.ComputedAttributeConstructorRuntimeIterator

All Implemented Interfaces:

Serializable, AtMostOneLocalRuntimePlan<Item>, LocalRuntimePlan<Item>

public class ComputedAttributeConstructorRuntimeIterator
extends AbstractAtMostOneItemRuntimePlan

Runtime iterator for computed attribute constructors.

See Also:

• ComputedAttributeConstructorExpression
• Serialized Form

Field Summary

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

staticContext

Constructor Summary

Constructors

Constructor	Description
ComputedAttributeConstructorRuntimeIterator(Name staticAttributeName, DataFunctionIterator contentExpression, RuntimeStaticContext staticContext)	Constructor for static attribute name: attribute attributeName { value }
ComputedAttributeConstructorRuntimeIterator(DataFunctionIterator nameIterator, DataFunctionIterator contentExpression, RuntimeStaticContext staticContext)	Constructor for dynamic attribute name: attribute { nameExpression } { value }

Method Summary

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

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

ComputedAttributeConstructorRuntimeIterator

public ComputedAttributeConstructorRuntimeIterator(Name staticAttributeName,
 DataFunctionIterator contentExpression,
 RuntimeStaticContext staticContext)

Constructor for static attribute name: attribute attributeName { value }

Parameters:

staticAttributeName - The static attribute name (expanded)

contentExpression - The value iterator

staticContext - The runtime static context

ComputedAttributeConstructorRuntimeIterator

public ComputedAttributeConstructorRuntimeIterator(DataFunctionIterator nameIterator,
 DataFunctionIterator contentExpression,
 RuntimeStaticContext staticContext)

Constructor for dynamic attribute name: attribute { nameExpression } { value }

Parameters:

nameIterator - The dynamic attribute name iterator (wrapped in AtomizationIterator)

contentExpression - The value iterator

staticContext - The runtime static context

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