org.springframework.boot.loader.data

Class RandomAccessDataFile

java.lang.Object

org.springframework.boot.loader.data.RandomAccessDataFile

All Implemented Interfaces:

RandomAccessData

public class RandomAccessDataFile
extends Object
implements RandomAccessData

RandomAccessData implementation backed by a RandomAccessFile.

Author:

Phillip Webb, Andy Wilkinson

Constructor Summary

Constructors

Constructor and Description
RandomAccessDataFile(File file) Create a new RandomAccessDataFile backed by the specified file.

Method Summary

Modifier and Type	Method and Description
void	close()
File	getFile() Returns the underlying File.
InputStream	getInputStream() Returns an InputStream that can be used to read the underlying data.
long	getSize() Returns the size of the data.
RandomAccessData	getSubsection(long offset, long length) Returns a new RandomAccessData for a specific subsection of this data.
byte[]	read() Reads all the data and returns it as a byte array.
byte[]	read(long offset, long length) Reads the length bytes of data starting at the given offset.

Methods inherited from class java.lang.Object

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

Constructor Detail

RandomAccessDataFile

public RandomAccessDataFile(File file)

Create a new RandomAccessDataFile backed by the specified file.

Parameters:

file - the underlying file

Throws:

IllegalArgumentException - if the file is null or does not exist

Method Detail

getFile

public File getFile()

Returns the underlying File.

Returns:

the underlying file

getInputStream

public InputStream getInputStream()
                           throws IOException

Description copied from interface: RandomAccessData

Returns an InputStream that can be used to read the underlying data. The caller is responsible close the underlying stream.

Specified by:

getInputStream in interface RandomAccessData

Returns:

a new input stream that can be used to read the underlying data.

Throws:

IOException - if the stream cannot be opened

getSubsection

public RandomAccessData getSubsection(long offset,
                                      long length)

Description copied from interface: RandomAccessData

Returns a new RandomAccessData for a specific subsection of this data.

Specified by:

getSubsection in interface RandomAccessData

Parameters:

offset - the offset of the subsection

length - the length of the subsection

Returns:

the subsection data

read

public byte[] read()
            throws IOException

Description copied from interface: RandomAccessData

Reads all the data and returns it as a byte array.

Specified by:

read in interface RandomAccessData

Returns:

the data

Throws:

IOException - if the data cannot be read

read

public byte[] read(long offset,
                   long length)
            throws IOException

Description copied from interface: RandomAccessData

Reads the length bytes of data starting at the given offset.

Specified by:

read in interface RandomAccessData

Parameters:

offset - the offset from which data should be read

length - the number of bytes to be read

Returns:

the data

Throws:

IOException - if the data cannot be read

EOFException - if offset plus length is greater than the length of the file or subsection

getSize

public long getSize()

Description copied from interface: RandomAccessData

Returns the size of the data.

Specified by:

getSize in interface RandomAccessData

Returns:

the size

close

public void close()
           throws IOException

Throws:

IOException