Package org.rumbledb.runtime.xml

Class DocumentNodeConstructorRuntimeIterator

java.lang.Object

org.rumbledb.runtime.RuntimeIterator

org.rumbledb.runtime.AtMostOneItemLocalRuntimeIterator

org.rumbledb.runtime.xml.DocumentNodeConstructorRuntimeIterator

All Implemented Interfaces:

com.esotericsoftware.kryo.KryoSerializable, Serializable, RuntimeIteratorInterface

public class DocumentNodeConstructorRuntimeIterator
extends AtMostOneItemLocalRuntimeIterator

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.RuntimeIterator

children, currentDynamicContextForLocalExecution, FLOW_EXCEPTION_MESSAGE, hasNext, isOpen, isSequential, isUpdating, staticContext, staticURI

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
Item	materializeFirstItemOrNull(DynamicContext dynamicContext)

Methods inherited from class org.rumbledb.runtime.AtMostOneItemLocalRuntimeIterator

close, getEffectiveBooleanValueOrCheckPosition, getRDD, materialize, materializeAtMostOneItemOrNull, materializeExactlyOneItem, materializeNFirstItems, next, open, reset

Methods inherited from class org.rumbledb.runtime.RuntimeIterator

bindToVariableInDynamicContext, canProduceDataFrame, deepCopy, generateNativeQuery, getConfiguration, getDataFrame, getEffectiveBooleanValue, getHighestExecutionMode, getMetadata, getOrCreateDataFrame, getPendingUpdateList, getStaticType, getVariableDependencies, hasNext, isDataFrame, isLocal, isOpen, isRDD, isRDDOrDataFrame, isSequential, isSparkJobNeeded, isUpdating, materialize, materializeAtMostOneItemOrDefault, print, printToStandardError, read, setStaticContext, write

Methods inherited from class java.lang.Object

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

Constructor Details

DocumentNodeConstructorRuntimeIterator

public DocumentNodeConstructorRuntimeIterator(RuntimeIterator contentIterator,
 RuntimeStaticContext staticContext)

Constructor for document node constructor runtime iterator

Parameters:

contentIterator - Iterator for the content expression

staticContext - The static context

Method Details

materializeFirstItemOrNull

public Item materializeFirstItemOrNull(DynamicContext dynamicContext)

Specified by:

materializeFirstItemOrNull in class AtMostOneItemLocalRuntimeIterator