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

Method Summary

Modifier and Type	Method	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.
Map<String,Object>	nextRaw()
Map<String,Object>	nextRaw(String timestampColumn)
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()

nextRaw

public Map<String,Object> nextRaw()

nextRaw

public Map<String,Object> nextRaw(String timestampColumn)

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