org.apache.giraph.utils.io

Class BigDataInput

java.lang.Object

org.apache.giraph.utils.io.BigDataInput

All Implemented Interfaces:

DataInput, ExtendedDataInput

public class BigDataInput
extends Object
implements ExtendedDataInput

Implementations of ExtendedDataInput are limited because they can only handle up to 1GB of data. This ExtendedDataInput overcomes that limitation, with almost no additional cost when data is not huge. Goes in pair with BigDataOutput

Constructor Summary

Constructors

Constructor and Description
BigDataInput(BigDataOutput bigDataOutput) Constructor

Method Summary

Modifier and Type	Method and Description
int	available() How many bytes are available?
boolean	endOfInput() Check if we read everything from the input
int	getPos() Get the position of what has been read
boolean	readBoolean()
byte	readByte()
char	readChar()
double	readDouble()
float	readFloat()
void	readFully(byte[] b)
void	readFully(byte[] b, int off, int len)
int	readInt()
String	readLine()
long	readLong()
short	readShort()
int	readUnsignedByte()
int	readUnsignedShort()
String	readUTF()
int	skipBytes(int n)

Methods inherited from class java.lang.Object

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

Constructor Detail

BigDataInput

public BigDataInput(BigDataOutput bigDataOutput)

Constructor

Parameters:

bigDataOutput - BigDataOutput which we want to read data from

Method Detail

readFully

public void readFully(byte[] b)
               throws IOException

Specified by:

readFully in interface DataInput

Throws:

IOException

readFully

public void readFully(byte[] b,
                      int off,
                      int len)
               throws IOException

Specified by:

readFully in interface DataInput

Throws:

IOException

readBoolean

public boolean readBoolean()
                    throws IOException

Specified by:

readBoolean in interface DataInput

Throws:

IOException

readByte

public byte readByte()
              throws IOException

Specified by:

readByte in interface DataInput

Throws:

IOException

readUnsignedByte

public int readUnsignedByte()
                     throws IOException

Specified by:

readUnsignedByte in interface DataInput

Throws:

IOException

readShort

public short readShort()
                throws IOException

Specified by:

readShort in interface DataInput

Throws:

IOException

readUnsignedShort

public int readUnsignedShort()
                      throws IOException

Specified by:

readUnsignedShort in interface DataInput

Throws:

IOException

readChar

public char readChar()
              throws IOException

Specified by:

readChar in interface DataInput

Throws:

IOException

readInt

public int readInt()
            throws IOException

Specified by:

readInt in interface DataInput

Throws:

IOException

readLong

public long readLong()
              throws IOException

Specified by:

readLong in interface DataInput

Throws:

IOException

readFloat

public float readFloat()
                throws IOException

Specified by:

readFloat in interface DataInput

Throws:

IOException

readDouble

public double readDouble()
                  throws IOException

Specified by:

readDouble in interface DataInput

Throws:

IOException

readLine

public String readLine()
                throws IOException

Specified by:

readLine in interface DataInput

Throws:

IOException

readUTF

public String readUTF()
               throws IOException

Specified by:

readUTF in interface DataInput

Throws:

IOException

skipBytes

public int skipBytes(int n)
              throws IOException

Specified by:

skipBytes in interface DataInput

Throws:

IOException

getPos

public int getPos()

Description copied from interface: ExtendedDataInput

Get the position of what has been read

Specified by:

getPos in interface ExtendedDataInput

Returns:

How many bytes have been read?

available

public int available()

Description copied from interface: ExtendedDataInput

How many bytes are available?

Specified by:

available in interface ExtendedDataInput

Returns:

Bytes available

endOfInput

public boolean endOfInput()

Description copied from interface: ExtendedDataInput

Check if we read everything from the input

Specified by:

endOfInput in interface ExtendedDataInput

Returns:

True iff we read everything from the input