com.facebook.presto.rcfile

Class RcFileDecoderUtils

java.lang.Object

com.facebook.presto.rcfile.RcFileDecoderUtils

public final class RcFileDecoderUtils
extends Object

Method Summary

Modifier and Type	Method and Description
static int	calculateTruncationLength(Type type, io.airlift.slice.Slice slice, int offset, int length)
static int	decodeVIntSize(byte value)
static int	decodeVIntSize(io.airlift.slice.Slice slice, int offset)
static long	findFirstSyncPosition(RcFileDataSource dataSource, long offset, long length, long syncFirst, long syncSecond) Find the beginning of the first full sync sequence that starts within the specified range.
static boolean	isNegativeVInt(byte value)
static boolean	isNegativeVInt(io.airlift.slice.Slice slice, int offset)
static long	readVInt(io.airlift.slice.SliceInput in)
static long	readVInt(io.airlift.slice.Slice slice, int start)
static long	readVInt(io.airlift.slice.Slice slice, int start, int length)
static void	writeLengthPrefixedString(io.airlift.slice.SliceOutput out, io.airlift.slice.Slice slice)
static void	writeVInt(io.airlift.slice.SliceOutput out, int value)
static void	writeVLong(io.airlift.slice.SliceOutput out, long value)

Methods inherited from class java.lang.Object

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

Method Detail

decodeVIntSize

public static int decodeVIntSize(io.airlift.slice.Slice slice,
                                 int offset)

decodeVIntSize

public static int decodeVIntSize(byte value)

isNegativeVInt

public static boolean isNegativeVInt(io.airlift.slice.Slice slice,
                                     int offset)

isNegativeVInt

public static boolean isNegativeVInt(byte value)

readVInt

public static long readVInt(io.airlift.slice.SliceInput in)

readVInt

public static long readVInt(io.airlift.slice.Slice slice,
                            int start)

readVInt

public static long readVInt(io.airlift.slice.Slice slice,
                            int start,
                            int length)

findFirstSyncPosition

public static long findFirstSyncPosition(RcFileDataSource dataSource,
                                         long offset,
                                         long length,
                                         long syncFirst,
                                         long syncSecond)
                                  throws IOException

Find the beginning of the first full sync sequence that starts within the specified range.

Throws:

IOException

writeLengthPrefixedString

public static void writeLengthPrefixedString(io.airlift.slice.SliceOutput out,
                                             io.airlift.slice.Slice slice)

writeVInt

public static void writeVInt(io.airlift.slice.SliceOutput out,
                             int value)

writeVLong

public static void writeVLong(io.airlift.slice.SliceOutput out,
                              long value)

calculateTruncationLength

public static int calculateTruncationLength(Type type,
                                            io.airlift.slice.Slice slice,
                                            int offset,
                                            int length)