com.facebook.presto.thrift.api.datatypes

Class PrestoThriftHyperLogLog

java.lang.Object

com.facebook.presto.thrift.api.datatypes.PrestoThriftHyperLogLog

All Implemented Interfaces:

PrestoThriftColumnData

@ThriftStruct
public final class PrestoThriftHyperLogLog
extends Object
implements PrestoThriftColumnData

Elements of nulls array determine if a value for a corresponding row is null. Each elements of sizes array contains the length in bytes for the corresponding element. If row is null then the corresponding element in sizes is ignored. bytes array contains encoded byte values for HyperLogLog representation as defined in Airlift specification: href="https://github.com/airlift/airlift/blob/master/stats/docs/hll.md Values for all rows are written to bytes array one after another. The total number of bytes must be equal to the sum of all sizes.

Constructor Summary

Constructors

Constructor and Description
PrestoThriftHyperLogLog(boolean[] nulls, int[] sizes, byte[] bytes)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
static PrestoThriftBlock	fromBlock(Block block)
byte[]	getBytes()
boolean[]	getNulls()
int[]	getSizes()
int	hashCode()
int	numberOfRecords()
Block	toBlock(Type desiredType)
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

PrestoThriftHyperLogLog

@ThriftConstructor
public PrestoThriftHyperLogLog(@ThriftField(name="nulls") @Nullable
                                                  boolean[] nulls,
                                                  @ThriftField(name="sizes") @Nullable
                                                  int[] sizes,
                                                  @ThriftField(name="bytes") @Nullable
                                                  byte[] bytes)

Method Detail

getNulls

@Nullable
 @ThriftField(value=1,
             requiredness=OPTIONAL)
public boolean[] getNulls()

getSizes

@Nullable
 @ThriftField(value=2,
             requiredness=OPTIONAL)
public int[] getSizes()

getBytes

@Nullable
 @ThriftField(value=3,
             requiredness=OPTIONAL)
public byte[] getBytes()

toBlock

public Block toBlock(Type desiredType)

Specified by:

toBlock in interface PrestoThriftColumnData

numberOfRecords

public int numberOfRecords()

Specified by:

numberOfRecords in interface PrestoThriftColumnData

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object

fromBlock

public static PrestoThriftBlock fromBlock(Block block)