org.apache.arrow.vector.util

クラス ByteFunctionHelpers

java.lang.Object

org.apache.arrow.vector.util.ByteFunctionHelpers

public class ByteFunctionHelpers
extends Object

コンストラクタのサマリー

コンストラクタ

コンストラクタと説明
ByteFunctionHelpers()

メソッドのサマリー

修飾子とタイプ	メソッドと説明
static int	compare(ArrowBuf left, int lStart, int lEnd, ArrowBuf right, int rStart, int rEnd) Helper function to compare a set of bytes in two ArrowBufs.
static int	compare(ArrowBuf left, int lStart, int lEnd, byte[] right, int rStart, int rEnd) Helper function to compare a set of bytes in ArrowBuf to a ByteArray.
static int	equal(ArrowBuf left, int lStart, int lEnd, ArrowBuf right, int rStart, int rEnd) Helper function to check for equality of bytes in two ArrowBufs
static int	unsignedLongCompare(long a, long b) Compares the two specified long values, treating them as unsigned values between 0 and 2^64 - 1 inclusive.

クラスから継承されたメソッド java.lang.Object

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

コンストラクタの詳細

ByteFunctionHelpers

public ByteFunctionHelpers()

メソッドの詳細

equal

public static final int equal(ArrowBuf left,
                              int lStart,
                              int lEnd,
                              ArrowBuf right,
                              int rStart,
                              int rEnd)

Helper function to check for equality of bytes in two ArrowBufs

パラメータ:

left - Left ArrowBuf for comparison

lStart - start offset in the buffer

lEnd - end offset in the buffer

right - Right ArrowBuf for comparison

rStart - start offset in the buffer

rEnd - end offset in the buffer

戻り値:

1 if left input is greater, -1 if left input is smaller, 0 otherwise

compare

public static final int compare(ArrowBuf left,
                                int lStart,
                                int lEnd,
                                ArrowBuf right,
                                int rStart,
                                int rEnd)

Helper function to compare a set of bytes in two ArrowBufs. Function will check data before completing in the case that

パラメータ:

left - Left ArrowBuf to compare

lStart - start offset in the buffer

lEnd - end offset in the buffer

right - Right ArrowBuf to compare

rStart - start offset in the buffer

rEnd - end offset in the buffer

戻り値:

1 if left input is greater, -1 if left input is smaller, 0 otherwise

compare

public static final int compare(ArrowBuf left,
                                int lStart,
                                int lEnd,
                                byte[] right,
                                int rStart,
                                int rEnd)

Helper function to compare a set of bytes in ArrowBuf to a ByteArray.

パラメータ:

left - Left ArrowBuf for comparison purposes

lStart - start offset in the buffer

lEnd - end offset in the buffer

right - second input to be compared

rStart - start offset in the byte array

rEnd - end offset in the byte array

戻り値:

1 if left input is greater, -1 if left input is smaller, 0 otherwise

unsignedLongCompare

public static int unsignedLongCompare(long a,
                                      long b)

Compares the two specified long values, treating them as unsigned values between 0 and 2^64 - 1 inclusive.

パラメータ:

a - the first unsigned long to compare

b - the second unsigned long to compare

戻り値:

a negative value if a is less than b; a positive value if a is greater than b; or zero if they are equal