Package org.apache.jackrabbit.util

Class LazyFileInputStream

java.lang.Object

java.io.InputStream

org.apache.jackrabbit.util.LazyFileInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class LazyFileInputStream
extends InputStream

This Class implements an InputStream that provides the same functionality as a FileInputStream but opens the file by the first file access.

Constructor Summary

Constructors

Constructor	Description
LazyFileInputStream(File file)	Creates a new LazyFileInputStream for the given file.
LazyFileInputStream(FileDescriptor fdObj)	Creates a new LazyFileInputStream for the given file desciptor.
LazyFileInputStream(String name)	Creates a new LazyFileInputStream for the given file.

Method Summary

Modifier and Type	Method	Description
int	available()
void	close()
void	mark(int readlimit)
boolean	markSupported()
void	open()	Opens the underlying file input stream in neccessairy.
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len)
void	reset()
long	skip(long n)

Methods inherited from class java.io.InputStream

nullInputStream, readAllBytes, readNBytes, readNBytes, skipNBytes, transferTo

Methods inherited from class java.lang.Object

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

Constructor Details

LazyFileInputStream

public LazyFileInputStream(File file)
                    throws FileNotFoundException

Creates a new LazyFileInputStream for the given file. If the file is unreadably, a FileNotFoundException is thrown.

Parameters:

file -

Throws:

FileNotFoundException

LazyFileInputStream

public LazyFileInputStream(FileDescriptor fdObj)

Creates a new LazyFileInputStream for the given file desciptor.

Parameters:

fdObj -

LazyFileInputStream

public LazyFileInputStream(String name)
                    throws FileNotFoundException

Creates a new LazyFileInputStream for the given file. If the file is unreadably, a FileNotFoundException is thrown.

Parameters:

name -

Throws:

FileNotFoundException

Method Details

open

public void open()
          throws IOException

Opens the underlying file input stream in neccessairy.

Throws:

IOException

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

available

public int available()
              throws IOException

Overrides:

available in class InputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class InputStream

Throws:

IOException

reset

public void reset()
           throws IOException

Overrides:

reset in class InputStream

Throws:

IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class InputStream

mark

public void mark(int readlimit)

Overrides:

mark in class InputStream

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class InputStream

Throws:

IOException

read

public int read(byte[] b)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

read

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

Overrides:

read in class InputStream

Throws:

IOException