com.facebook.hive.orc

Class DynamicByteArray

java.lang.Object

com.facebook.hive.orc.DynamicByteArray

public final class DynamicByteArray
extends Object

A class that is a growable array of bytes. Growth is managed in terms of chunks that are allocated when needed.

Constructor Summary

Constructors

Constructor and Description
DynamicByteArray()
DynamicByteArray(int size)

Method Summary

Modifier and Type	Method and Description
int	add(byte value)
int	add(byte[] value, int valueOffset, int valueLength) Copy a slice of a byte array into our buffer.
void	clear() Clear the array to its original pristine state.
int	compare(int otherOffset, int otherLength, int ourOffset, int ourLength) Byte compare a set of bytes against the bytes in this dynamic array.
boolean	equals(io.airlift.slice.Slice other, int otherOffset, int otherLength, int ourOffset, int ourLength)
byte	get(int index)
long	getSizeInBytes() Get the size of the buffers.
void	read(InputStream in, int lengthToRead) Read lengthToRead bytes from the input stream into this array
void	readAll(InStream in) Read the entire stream into this array.
void	set(int index, byte value)
void	setByteBuffer(ByteBuffer result, int offset, int length)
void	setText(org.apache.hadoop.io.Text result, int offset, int length) Set a text value from the bytes in this dynamic array.
int	size() Get the size of the array.
String	toString()
void	write(OutputStream out, int offset, int length) Write out a range of this dynamic array to an output stream.

Methods inherited from class java.lang.Object

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

Constructor Detail

DynamicByteArray

public DynamicByteArray()

DynamicByteArray

public DynamicByteArray(int size)

Method Detail

get

public byte get(int index)

set

public void set(int index,
                byte value)

add

public int add(byte value)

add

public int add(byte[] value,
               int valueOffset,
               int valueLength)

Copy a slice of a byte array into our buffer.

Parameters:

value - the array to copy from

valueOffset - the first location to copy from value

valueLength - the number of bytes to copy from value

Returns:

the offset of the start of the value

readAll

public void readAll(InStream in)
             throws IOException

Read the entire stream into this array.

Parameters:

in - the stream to read from

Throws:

IOException

read

public void read(InputStream in,
                 int lengthToRead)
          throws IOException

Read lengthToRead bytes from the input stream into this array

Parameters:

in - the stream to read from

lengthToRead - the number of bytes to read

Throws:

IOException

compare

public int compare(int otherOffset,
                   int otherLength,
                   int ourOffset,
                   int ourLength)

Byte compare a set of bytes against the bytes in this dynamic array.

Parameters:

otherOffset - start offset in the other array

otherLength - number of bytes in the other array

ourOffset - the offset in our array

ourLength - the number of bytes in our array

Returns:

negative for less, 0 for equal, positive for greater

equals

public boolean equals(io.airlift.slice.Slice other,
                      int otherOffset,
                      int otherLength,
                      int ourOffset,
                      int ourLength)

size

public int size()

Get the size of the array.

Returns:

the number of bytes in the array

clear

public void clear()

Clear the array to its original pristine state.

setText

public void setText(org.apache.hadoop.io.Text result,
                    int offset,
                    int length)

Set a text value from the bytes in this dynamic array.

Parameters:

result - the value to set

offset - the start of the bytes to copy

length - the number of bytes to copy

write

public void write(OutputStream out,
                  int offset,
                  int length)
           throws IOException

Write out a range of this dynamic array to an output stream.

Parameters:

out - the stream to write to

offset - the first offset to write

length - the number of bytes to write

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object

setByteBuffer

public void setByteBuffer(ByteBuffer result,
                          int offset,
                          int length)

getSizeInBytes

public long getSizeInBytes()

Get the size of the buffers.