Package org.apache.pinot.segment.local.io.util

Class VarLengthValueReader

java.lang.Object

org.apache.pinot.segment.local.io.util.VarLengthValueReader

All Implemented Interfaces:

Closeable, AutoCloseable, ValueReader

public class VarLengthValueReader
extends Object
implements ValueReader

The value reader for var-length values (STRING and BYTES). See VarLengthValueWriter for the file layout.

Constructor Summary

Constructors

Constructor	Description
VarLengthValueReader(PinotDataBuffer dataBuffer)

Method Summary

Modifier and Type	Method	Description
void	close()
byte[]	getBytes(int index, int numBytesPerValue)	NOTE: Do not reuse buffer for BYTES because the return value can have variable length.
double	getDouble(int index)
float	getFloat(int index)
int	getInt(int index)
long	getLong(int index)
int	getNumValues()
String	getPaddedString(int index, int numBytesPerValue, byte[] buffer)	NOTE: The passed in reusable buffer should have capacity of at least numBytesPerValue.
byte[]	getUnpaddedBytes(int index, int numBytesPerValue, byte paddingByte, byte[] buffer)	Get un-padded bytes for string.
String	getUnpaddedString(int index, int numBytesPerValue, byte paddingByte, byte[] buffer)	NOTE: The passed in reusable buffer should have capacity of at least numBytesPerValue.
static boolean	isVarLengthValueBuffer(PinotDataBuffer buffer)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.pinot.segment.local.io.util.ValueReader

getBigDecimal

Constructor Detail

VarLengthValueReader

public VarLengthValueReader(PinotDataBuffer dataBuffer)

Method Detail

isVarLengthValueBuffer

public static boolean isVarLengthValueBuffer(PinotDataBuffer buffer)

getNumValues

public int getNumValues()

getInt

public int getInt(int index)

Specified by:

getInt in interface ValueReader

getLong

public long getLong(int index)

Specified by:

getLong in interface ValueReader

getFloat

public float getFloat(int index)

Specified by:

getFloat in interface ValueReader

getDouble

public double getDouble(int index)

Specified by:

getDouble in interface ValueReader

getUnpaddedBytes

public byte[] getUnpaddedBytes(int index,
                               int numBytesPerValue,
                               byte paddingByte,
                               byte[] buffer)

Description copied from interface: ValueReader

Get un-padded bytes for string. NOTE: The passed in reusable buffer should have capacity of at least numBytesPerValue.

Specified by:

getUnpaddedBytes in interface ValueReader

Returns:

getUnpaddedString

public String getUnpaddedString(int index,
                                int numBytesPerValue,
                                byte paddingByte,
                                byte[] buffer)

Description copied from interface: ValueReader

NOTE: The passed in reusable buffer should have capacity of at least numBytesPerValue.

Specified by:

getUnpaddedString in interface ValueReader

getPaddedString

public String getPaddedString(int index,
                              int numBytesPerValue,
                              byte[] buffer)

Description copied from interface: ValueReader

NOTE: The passed in reusable buffer should have capacity of at least numBytesPerValue.

Specified by:

getPaddedString in interface ValueReader

getBytes

public byte[] getBytes(int index,
                       int numBytesPerValue)

Description copied from interface: ValueReader

NOTE: Do not reuse buffer for BYTES because the return value can have variable length.

Specified by:

getBytes in interface ValueReader

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable