org.apache.hadoop.typedbytes

Class TypedBytesOutput

java.lang.Object

org.apache.hadoop.typedbytes.TypedBytesOutput

public class TypedBytesOutput
extends Object

Provides functionality for writing typed bytes.

Constructor Summary

Constructors

Constructor and Description
TypedBytesOutput(DataOutput out) Creates a new instance of TypedBytesOutput.

Method Summary

Methods

Modifier and Type	Method and Description
static TypedBytesOutput	get(DataOutput out) Get a thread-local typed bytes output for the supplied DataOutput.
void	write(Object obj) Writes a Java object as a typed bytes sequence.
void	writeBool(boolean b) Writes a boolean as a typed bytes sequence.
void	writeByte(byte b) Writes a byte as a typed bytes sequence.
void	writeBytes(org.apache.hadoop.record.Buffer buffer) Writes a bytes buffer as a typed bytes sequence.
void	writeBytes(byte[] bytes) Writes a bytes array as a typed bytes sequence.
void	writeBytes(byte[] bytes, int code) Writes a bytes array as a typed bytes sequence, using a given typecode.
void	writeBytes(byte[] bytes, int code, int length) Writes a bytes array as a typed bytes sequence, using a given typecode and length.
void	writeDouble(double d) Writes a double as a typed bytes sequence.
void	writeFloat(float f) Writes a float as a typed bytes sequence.
void	writeInt(int i) Writes an integer as a typed bytes sequence.
void	writeList(List list) Writes a list as a typed bytes sequence.
void	writeListFooter() Writes a list footer.
void	writeListHeader() Writes a list header.
void	writeLong(long l) Writes a long as a typed bytes sequence.
void	writeMap(Map map) Writes a map as a typed bytes sequence.
void	writeMapHeader(int length) Writes a map header.
void	writeRaw(byte[] bytes) Writes a raw sequence of typed bytes.
void	writeRaw(byte[] bytes, int offset, int length) Writes a raw sequence of typed bytes.
void	writeString(String s) Writes a string as a typed bytes sequence.
void	writeVector(ArrayList vector) Writes a vector as a typed bytes sequence.
void	writeVectorHeader(int length) Writes a vector header.

Methods inherited from class java.lang.Object

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

Constructor Detail

TypedBytesOutput

public TypedBytesOutput(DataOutput out)

Creates a new instance of TypedBytesOutput.

Method Detail

get

public static TypedBytesOutput get(DataOutput out)

Get a thread-local typed bytes output for the supplied DataOutput.

Parameters:

out - data output object

Returns:

typed bytes output corresponding to the supplied DataOutput.

write

public void write(Object obj)
           throws IOException

Writes a Java object as a typed bytes sequence.

Parameters:

obj - the object to be written

Throws:

IOException

writeRaw

public void writeRaw(byte[] bytes)
              throws IOException

Writes a raw sequence of typed bytes.

Parameters:

bytes - the bytes to be written

Throws:

IOException

writeRaw

public void writeRaw(byte[] bytes,
            int offset,
            int length)
              throws IOException

Writes a raw sequence of typed bytes.

Parameters:

bytes - the bytes to be written

offset - an offset in the given array

length - number of bytes from the given array to write

Throws:

IOException

writeBytes

public void writeBytes(byte[] bytes,
              int code,
              int length)
                throws IOException

Writes a bytes array as a typed bytes sequence, using a given typecode and length.

Parameters:

bytes - the bytes array to be written

code - the typecode to use

length - the number of bytes to write, starting from position 0

Throws:

IOException

writeBytes

public void writeBytes(byte[] bytes,
              int code)
                throws IOException

Writes a bytes array as a typed bytes sequence, using a given typecode.

Parameters:

bytes - the bytes array to be written

code - the typecode to use

Throws:

IOException

writeBytes

public void writeBytes(byte[] bytes)
                throws IOException

Writes a bytes array as a typed bytes sequence.

Parameters:

bytes - the bytes array to be written

Throws:

IOException

writeBytes

public void writeBytes(org.apache.hadoop.record.Buffer buffer)
                throws IOException

Writes a bytes buffer as a typed bytes sequence.

Parameters:

buffer - the bytes buffer to be written

Throws:

IOException

writeByte

public void writeByte(byte b)
               throws IOException

Writes a byte as a typed bytes sequence.

Parameters:

b - the byte to be written

Throws:

IOException

writeBool

public void writeBool(boolean b)
               throws IOException

Writes a boolean as a typed bytes sequence.

Parameters:

b - the boolean to be written

Throws:

IOException

writeInt

public void writeInt(int i)
              throws IOException

Writes an integer as a typed bytes sequence.

Parameters:

i - the integer to be written

Throws:

IOException

writeLong

public void writeLong(long l)
               throws IOException

Writes a long as a typed bytes sequence.

Parameters:

l - the long to be written

Throws:

IOException

writeFloat

public void writeFloat(float f)
                throws IOException

Writes a float as a typed bytes sequence.

Parameters:

f - the float to be written

Throws:

IOException

writeDouble

public void writeDouble(double d)
                 throws IOException

Writes a double as a typed bytes sequence.

Parameters:

d - the double to be written

Throws:

IOException

writeString

public void writeString(String s)
                 throws IOException

Writes a string as a typed bytes sequence.

Parameters:

s - the string to be written

Throws:

IOException

writeVector

public void writeVector(ArrayList vector)
                 throws IOException

Writes a vector as a typed bytes sequence.

Parameters:

vector - the vector to be written

Throws:

IOException

writeVectorHeader

public void writeVectorHeader(int length)
                       throws IOException

Writes a vector header.

Parameters:

length - the number of elements in the vector

Throws:

IOException

writeList

public void writeList(List list)
               throws IOException

Writes a list as a typed bytes sequence.

Parameters:

list - the list to be written

Throws:

IOException

writeListHeader

public void writeListHeader()
                     throws IOException

Writes a list header.

Throws:

IOException

writeListFooter

public void writeListFooter()
                     throws IOException

Writes a list footer.

Throws:

IOException

writeMap

public void writeMap(Map map)
              throws IOException

Writes a map as a typed bytes sequence.

Parameters:

map - the map to be written

Throws:

IOException

writeMapHeader

public void writeMapHeader(int length)
                    throws IOException

Writes a map header.

Parameters:

length - the number of key-value pairs in the map

Throws:

IOException