Package org.rumbledb.runtime.functions.dataframe

Class DropColumnsIterator

java.lang.Object

org.rumbledb.runtime.RuntimeIterator

org.rumbledb.runtime.HybridRuntimeIterator

org.rumbledb.runtime.functions.dataframe.DropColumnsIterator

All Implemented Interfaces:

com.esotericsoftware.kryo.KryoSerializable, Serializable, RuntimeIteratorInterface

public class DropColumnsIterator
extends HybridRuntimeIterator

See Also:

• Serialized Form

Field Summary

Fields inherited from class org.rumbledb.runtime.HybridRuntimeIterator

result

Fields inherited from class org.rumbledb.runtime.RuntimeIterator

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

Constructor Summary

Constructors

Constructor	Description
DropColumnsIterator(List<RuntimeIterator> children, RuntimeStaticContext staticContext)

Method Summary

Modifier and Type	Method	Description
void	closeLocal()
JSoundDataFrame	getDataFrame(DynamicContext context)
org.apache.spark.api.java.JavaRDD<Item>	getRDDAux(DynamicContext context)
boolean	hasNextLocal()
Item	nextLocal()
void	openLocal()
void	resetLocal()

Methods inherited from class org.rumbledb.runtime.HybridRuntimeIterator

close, collectRDDwithLimit, dataFrameToRDDOfItems, fallbackToRDDIfDFNotImplemented, getRDD, hasNext, implementsDataFrames, implementsLocal, implementsRDD, materialize, materializeAtMostOneItemOrNull, materializeExactlyOneItem, materializeFirstItemOrNull, materializeNFirstItems, next, open, reset

Methods inherited from class org.rumbledb.runtime.RuntimeIterator

bindToVariableInDynamicContext, canProduceDataFrame, deepCopy, generateNativeQuery, getConfiguration, getEffectiveBooleanValue, getEffectiveBooleanValueOrCheckPosition, getHighestExecutionMode, getMetadata, getOrCreateDataFrame, getPendingUpdateList, getStaticType, getVariableDependencies, 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

DropColumnsIterator

public DropColumnsIterator(List<RuntimeIterator> children,
 RuntimeStaticContext staticContext)

Method Details

getRDDAux

public org.apache.spark.api.java.JavaRDD<Item> getRDDAux(DynamicContext context)

Specified by:

getRDDAux in class HybridRuntimeIterator

openLocal

public void openLocal()

Specified by:

openLocal in class HybridRuntimeIterator

closeLocal

public void closeLocal()

Specified by:

closeLocal in class HybridRuntimeIterator

resetLocal

public void resetLocal()

Specified by:

resetLocal in class HybridRuntimeIterator

hasNextLocal

public boolean hasNextLocal()

Specified by:

hasNextLocal in class HybridRuntimeIterator

nextLocal

public Item nextLocal()

Specified by:

nextLocal in class HybridRuntimeIterator

getDataFrame

public JSoundDataFrame getDataFrame(DynamicContext context)

Overrides:

getDataFrame in class RuntimeIterator