Package org.rumbledb.runtime.xml

Class DocumentNodeConstructorRuntimeIterator

java.lang.Object

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

org.rumbledb.runtime.plan.ItemRuntimePlan

org.rumbledb.runtime.AbstractAtMostOneItemRuntimePlan

org.rumbledb.runtime.xml.DocumentNodeConstructorRuntimeIterator

All Implemented Interfaces:

Serializable, AtMostOneLocalRuntimePlan<Item>, LocalRuntimePlan<Item>

public class DocumentNodeConstructorRuntimeIterator
extends AbstractAtMostOneItemRuntimePlan

Runtime iterator for document node constructors. Document node constructors create document nodes according to the XQuery 3.1 specification. All document node constructors are computed constructors. The result of a document node constructor is a new document node, with its own node identity.

See Also:

• DocumentNodeConstructorExpression
• Serialized Form

Field Summary

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

staticContext

Constructor Summary

Constructors

Constructor	Description
DocumentNodeConstructorRuntimeIterator(ItemRuntimePlan contentIterator, RuntimeStaticContext staticContext)	Constructor for document node constructor runtime iterator

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

DocumentNodeConstructorRuntimeIterator

public DocumentNodeConstructorRuntimeIterator(ItemRuntimePlan contentIterator,
 RuntimeStaticContext staticContext)

Constructor for document node constructor runtime iterator

Parameters:

contentIterator - Iterator for the content expression

staticContext - The 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