edu.umn.cs.spatialHadoop.nasa

Class HTTPInputStream

java.lang.Object

java.io.InputStream

edu.umn.cs.spatialHadoop.nasa.HTTPInputStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class HTTPInputStream
extends java.io.InputStream

A wrapper around a stream obtained from URL.openStream() that makes it Seekable and PositionedReadable to be used with FSDataInputStream, hence HTTPFileSystem. All methods are delegated to the underlying (wrapped) input stream. Non-supported methods raise an exception if called.

Author:

Ahmed Eldawy

Constructor Summary

Constructors

Constructor and Description
HTTPInputStream(java.io.InputStream in)

Method Summary

Methods

Modifier and Type	Method and Description
int	available()
void	close()
boolean	equals(java.lang.Object obj)
long	getPos()
int	hashCode()
void	mark(int readlimit)
boolean	markSupported()
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len)
int	read(long position, byte[] buffer, int offset, int length)
void	readFully(long position, byte[] buffer)
void	readFully(long position, byte[] buffer, int offset, int length)
void	reset()
void	seek(long newPos)
boolean	seekToNewSource(long targetPos)
long	skip(long n)
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

HTTPInputStream

public HTTPInputStream(java.io.InputStream in)

Method Detail

read

public int read()
         throws java.io.IOException

Specified by:

read in class java.io.InputStream

Throws:

java.io.IOException

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

read

public int read(byte[] b)
         throws java.io.IOException

Overrides:

read in class java.io.InputStream

Throws:

java.io.IOException

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

read

public int read(byte[] b,
       int off,
       int len)
         throws java.io.IOException

Overrides:

read in class java.io.InputStream

Throws:

java.io.IOException

skip

public long skip(long n)
          throws java.io.IOException

Overrides:

skip in class java.io.InputStream

Throws:

java.io.IOException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

available

public int available()
              throws java.io.IOException

Overrides:

available in class java.io.InputStream

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.InputStream

Throws:

java.io.IOException

mark

public void mark(int readlimit)

Overrides:

mark in class java.io.InputStream

reset

public void reset()
           throws java.io.IOException

Overrides:

reset in class java.io.InputStream

Throws:

java.io.IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class java.io.InputStream

read

public int read(long position,
       byte[] buffer,
       int offset,
       int length)
         throws java.io.IOException

Throws:

java.io.IOException

readFully

public void readFully(long position,
             byte[] buffer,
             int offset,
             int length)
               throws java.io.IOException

Throws:

java.io.IOException

readFully

public void readFully(long position,
             byte[] buffer)
               throws java.io.IOException

Throws:

java.io.IOException

seek

public void seek(long newPos)
          throws java.io.IOException

Throws:

java.io.IOException

getPos

public long getPos()
            throws java.io.IOException

Throws:

java.io.IOException

seekToNewSource

public boolean seekToNewSource(long targetPos)
                        throws java.io.IOException

Throws:

java.io.IOException