oracle.ifs.server.renderers

Class InMemoryRandomAccessContent

java.lang.Object

oracle.ifs.server.renderers.InMemoryRandomAccessContent

All Implemented Interfaces:

RandomAccessContentInterface

public class InMemoryRandomAccessContent
extends Object
implements RandomAccessContentInterface

InMemoryRandomAccessContent is an RandomAccessContentInterface object which stores its data as an array of bytes, keeping the all the data in memory. InMemoryRandomAccessContent are never writeable.

(Unpublished)

Constructor Summary

Constructors

Constructor and Description
InMemoryRandomAccessContent(byte[] bytes, boolean mustCopy) Creates a InMemoryRandomAccessContent from an array of bytes.
InMemoryRandomAccessContent(InputStream is) Creates an InMemoryRandomAccessContent from an InputStream.

Method Summary

Modifier and Type	Method and Description
boolean	canWrite() Always returns false
void	close() Release used memory
void	dispose() Releases used memory
void	flush() Throws IfsException 32236
long	getLength() returns the length of this content object.
int	read(long fOffset, byte[] buf, int bOffset, int length) read length bytes from file offset, filling buffer starting at boffset.
void	truncate(long offset) Throws IfsException 32236
void	write(long fOffset, byte[] buf, int bOffset, int length) Throws IfsException 32236

Methods inherited from class java.lang.Object

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

Constructor Detail

InMemoryRandomAccessContent

public InMemoryRandomAccessContent(byte[] bytes,
                                   boolean mustCopy)

Creates a InMemoryRandomAccessContent from an array of bytes.

Parameters:

bytes - The bytes which compose the content of the object

mustCopy - If true, then the byte array passed in must be copied. Otherwise, the passed-in bytes array is used directly.

InMemoryRandomAccessContent

public InMemoryRandomAccessContent(InputStream is)
                            throws IOException

Creates an InMemoryRandomAccessContent from an InputStream. Copies the stream's contents into memory.

Parameters:

is - The stream to use as input.

Throws:

IOException - thrown if an error occured reading the stream

Method Detail

read

public int read(long fOffset,
                byte[] buf,
                int bOffset,
                int length)

read length bytes from file offset, filling buffer starting at boffset. Both Offsets are zero based.

Specified by:

read in interface RandomAccessContentInterface

Parameters:

fOffset - offset at which to begin reading.

buf - the byte array into which data is to be read

bOffset - the offset into the buffer

length - the amount of data to read.

Returns:

number of bytes actually read.

write

public void write(long fOffset,
                  byte[] buf,
                  int bOffset,
                  int length)
           throws IfsException

Throws IfsException 32236

Specified by:

write in interface RandomAccessContentInterface

Parameters:

fOffset - offset at which to begin writing.

buf - the byte array containing the data to be written

bOffset - the offset into the buffer to begin writing from

length - the amount of data to write

Throws:

IfsException - if operation fails

truncate

public void truncate(long offset)
              throws IfsException

Throws IfsException 32236

Specified by:

truncate in interface RandomAccessContentInterface

Parameters:

offset - offset at which to truncate.

Throws:

IfsException - if operation fails

flush

public void flush()
           throws IfsException

Throws IfsException 32236

Specified by:

flush in interface RandomAccessContentInterface

Throws:

IfsException - if operation fails

close

public void close()
           throws IfsException

Release used memory

Specified by:

close in interface RandomAccessContentInterface

Throws:

IfsException - if operation fails

dispose

public void dispose()
             throws IfsException

Releases used memory

Specified by:

dispose in interface RandomAccessContentInterface

Throws:

IfsException - if operation fails

canWrite

public boolean canWrite()

Always returns false

Specified by:

canWrite in interface RandomAccessContentInterface

getLength

public long getLength()

returns the length of this content object.

Specified by:

getLength in interface RandomAccessContentInterface