Package org.rumbledb.runtime.misc

Class NodeComparisonRuntimeIterator

java.lang.Object

org.rumbledb.runtime.RuntimeIterator

org.rumbledb.runtime.AtMostOneItemLocalRuntimeIterator

org.rumbledb.runtime.misc.NodeComparisonRuntimeIterator

All Implemented Interfaces:

com.esotericsoftware.kryo.KryoSerializable, Serializable, RuntimeIteratorInterface

public class NodeComparisonRuntimeIterator
extends AtMostOneItemLocalRuntimeIterator

Runtime iterator for node comparisons. Node comparisons are used to compare two nodes, by their identity or by their document order.

See Also:

• NodeComparisonExpression
• 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
NodeComparisonRuntimeIterator(RuntimeIterator leftIterator, RuntimeIterator rightIterator, NodeComparisonExpression.NodeComparisonOperator operator, RuntimeStaticContext staticContext)

Method Summary

Modifier and Type	Method	Description
RuntimeIterator	getLeftIterator()
NodeComparisonExpression.NodeComparisonOperator	getOperator()
RuntimeIterator	getRightIterator()
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

NodeComparisonRuntimeIterator

public NodeComparisonRuntimeIterator(RuntimeIterator leftIterator,
 RuntimeIterator rightIterator,
 NodeComparisonExpression.NodeComparisonOperator operator,
 RuntimeStaticContext staticContext)

Method Details

getOperator

public NodeComparisonExpression.NodeComparisonOperator getOperator()

getLeftIterator

public RuntimeIterator getLeftIterator()

getRightIterator

public RuntimeIterator getRightIterator()

materializeFirstItemOrNull

public Item materializeFirstItemOrNull(DynamicContext dynamicContext)

Specified by:

materializeFirstItemOrNull in class AtMostOneItemLocalRuntimeIterator