org.apache.druid.segment.generator

Class DataGenerator

java.lang.Object

org.apache.druid.segment.generator.DataGenerator

public class DataGenerator
extends Object

Constructor Summary

Constructors

Constructor and Description
DataGenerator(List<GeneratorColumnSchema> columnSchemas, long seed, org.joda.time.Interval interval, int numRows)
DataGenerator(List<GeneratorColumnSchema> columnSchemas, long seed, long startTime, int numConsecutiveTimestamps, Double timestampIncrement)

Method Summary

Modifier and Type	Method and Description
static void	addStreamToIndex(Stream<InputRow> stream, IncrementalIndex index) Add rows from any generator to an index.
void	addToIndex(IncrementalIndex index, int numOfRows) Add rows from this generator to an index.
InputRow	nextRow()
DataGenerator	reset(long seed) Reset this generator to start from the begining of the interval with a new seed.
List<InputRow>	toList(int numOfRows) Put rows from this generator to a list.

Methods inherited from class java.lang.Object

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

Constructor Detail

DataGenerator

public DataGenerator(List<GeneratorColumnSchema> columnSchemas,
                     long seed,
                     long startTime,
                     int numConsecutiveTimestamps,
                     Double timestampIncrement)

DataGenerator

public DataGenerator(List<GeneratorColumnSchema> columnSchemas,
                     long seed,
                     org.joda.time.Interval interval,
                     int numRows)

Method Detail

nextRow

public InputRow nextRow()

reset

public DataGenerator reset(long seed)

Reset this generator to start from the begining of the interval with a new seed.

Parameters:

seed - the new seed to generate rows from

addStreamToIndex

public static void addStreamToIndex(Stream<InputRow> stream,
                                    IncrementalIndex index)

Add rows from any generator to an index.

Parameters:

stream - the stream of rows to add

index - the index to add rows to

addToIndex

public void addToIndex(IncrementalIndex index,
                       int numOfRows)

Add rows from this generator to an index.

Parameters:

index - the index to add rows to

numOfRows - the number of rows to add

toList

public List<InputRow> toList(int numOfRows)

Put rows from this generator to a list.

Parameters:

numOfRows - the number of rows to put in the list

Returns:

a List of InputRow