org.teiid.query.function.aggregate

Class Ntile

java.lang.Object

org.teiid.query.function.aggregate.AggregateFunction

org.teiid.query.function.aggregate.SingleArgumentAggregateFunction

org.teiid.query.function.aggregate.Ntile

public class Ntile
extends SingleArgumentAggregateFunction

Captures the row number and number of tiles for a given row post processing logic uses the row count over the window to calculate the final output

Field Summary

Fields inherited from class org.teiid.query.function.aggregate.AggregateFunction

argIndexes

Constructor Summary

Constructors

Constructor and Description
Ntile()

Method Summary

Modifier and Type	Method and Description
void	addInputDirect(Object input, List<?> tuple, CommandContext commandContext)
Class<?>	getOutputType(AggregateSymbol function)
Object	getResult(CommandContext commandContext) Called after all values have been processed to get the result.
void	reset() Called to reset the state of the function.

Methods inherited from class org.teiid.query.function.aggregate.SingleArgumentAggregateFunction

addInputDirect, initialize, initialize

Methods inherited from class org.teiid.query.function.aggregate.AggregateFunction

addInput, filter, getArgIndexes, getState, getStateTypes, respectsNull, setArgIndexes, setConditionIndex, setState

Methods inherited from class java.lang.Object

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

Constructor Detail

Ntile

public Ntile()

Method Detail

reset

public void reset()

Description copied from class: AggregateFunction

Called to reset the state of the function.

Specified by:

reset in class AggregateFunction

getResult

public Object getResult(CommandContext commandContext)

Description copied from class: AggregateFunction

Called after all values have been processed to get the result.

Specified by:

getResult in class AggregateFunction

Returns:

Result value

addInputDirect

public void addInputDirect(Object input,
                           List<?> tuple,
                           CommandContext commandContext)
                    throws TeiidProcessingException,
                           TeiidComponentException

Specified by:

addInputDirect in class SingleArgumentAggregateFunction

Throws:

TeiidProcessingException

TeiidComponentException

getOutputType

public Class<?> getOutputType(AggregateSymbol function)

Overrides:

getOutputType in class AggregateFunction