tsdb.util.iterator

Class SchemaConverterIterator

java.lang.Object

tsdb.util.iterator.TsIterator

tsdb.util.iterator.MoveIterator

tsdb.util.iterator.InputProcessingIterator

tsdb.util.iterator.SchemaConverterIterator

All Implemented Interfaces:

java.util.Iterator<TsEntry>, ProcessingChainEntry, ProcessingChainNode, ProcessingChainSupplier

public class SchemaConverterIterator
extends InputProcessingIterator

Converts schema of input iterator to output schema.

column names that are missing in input iterator are filled with NaN-values.

Field Summary

Fields inherited from class tsdb.util.iterator.InputProcessingIterator

input_iterator

Fields inherited from class tsdb.util.iterator.TsIterator

schema

Constructor Summary

Constructors

Constructor and Description
SchemaConverterIterator(TsIterator input_iterator, java.lang.String[] outputSchema, boolean fillWithNaN) Creates converter iterator.

Method Summary

Modifier and Type	Method and Description
protected TsEntry	getNext() Request next element.

Methods inherited from class tsdb.util.iterator.InputProcessingIterator

getProcessingChain

Methods inherited from class tsdb.util.iterator.MoveIterator

close, hasNext, next

Methods inherited from class tsdb.util.iterator.TsIterator

getNames, getSchema, isLive, isNotLive, toSchemas, toString, toTimeSeries, toTimestampSeries, writeConsole, writeConsole, writeCSV

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Methods inherited from interface tsdb.util.processingchain.ProcessingChainNode

getProcessingTitle

Methods inherited from interface tsdb.util.processingchain.ProcessingChainEntry

createUnknown, of

Methods inherited from interface tsdb.util.processingchain.ProcessingChainSupplier

createUnknown

Constructor Detail

SchemaConverterIterator

public SchemaConverterIterator(TsIterator input_iterator,
                               java.lang.String[] outputSchema,
                               boolean fillWithNaN)

Creates converter iterator.

Parameters:

input_iterator -

outputSchema -

fillWithNaN - If false and column name is missing in input then log a warning message.

Method Detail

getNext

protected TsEntry getNext()

Description copied from class: MoveIterator

Request next element.

It's guaranteed to not be called again when it first returns null (no next element).
This method should be called by MoveIterator internal only.

Specified by:

getNext in class MoveIterator

Returns:

next element or null if there is no next element