CachedRandomAccessFile

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com.objectwave.utility
Class CachedRandomAccessFile

java.lang.Object
  |
  +--com.objectwave.utility.BufferedRandomAccessFile
        |
        +--com.objectwave.utility.CachedRandomAccessFile

All Implemented Interfaces:: java.io.DataInput, java.io.DataOutput

public class CachedRandomAccessFile
extends BufferedRandomAccessFile

Extension fo the RandomAccessFile to cache the file until flush() is called. Usable with the com.objectwave.persist.FileBroker . Publically identical to java.io.RandomAccessFile , except for the constuctor, flush() , and readFile() .

Note: This class is not threadsafe.

Version:: $Id: CachedRandomAccessFile.java,v 2.1 2002/07/31 15:55:23 dave_hoag Exp $
Author:: Steven Sinclair
See Also:: RandomAccessFile

Nested Class Summary

protected class CachedRandomAccessFile.FileBlock


static class CachedRandomAccessFile.Test
          Description of the Class

Nested classes inherited from class com.objectwave.utility.BufferedRandomAccessFile

BufferedRandomAccessFile.FileBufferStruct, BufferedRandomAccessFile.Test

Field Summary

Fields inherited from class com.objectwave.utility.BufferedRandomAccessFile

altBuf, currBuf

Constructor Summary

CachedRandomAccessFile(java.io.File file, java.lang.String mode, int blockSize, boolean fullCache)
          Constructor for the CachedRandomAccessFile object

Method Summary

void flush()
          Description of the Method

protected CachedRandomAccessFile.FileBlock getBlock(long position)
          Gets the Block attribute of the CachedRandomAccessFile object

long getFilePointer()
          Gets the FilePointer attribute of the CachedRandomAccessFile object

java.io.Reader getReader()
          Gets the Reader attribute of the CachedRandomAccessFile object

java.io.Writer getWriter()
          Gets the Writer attribute of the CachedRandomAccessFile object

long length()
          Description of the Method

static void main(java.lang.String[] args)
          The main program for the CachedRandomAccessFile class

int read()
          Description of the Method

int read(byte[] b)
          Description of the Method

int read(byte[] b, int pos, int len)
          Description of the Method

void readFile()
          Read any unloaded blocks into memory.

void seek(long pos)
          Description of the Method

void setLength(long newLength)
          Sets the Length attribute of the CachedRandomAccessFile object

int skipBytes(int n)
          Description of the Method

long skipBytes(long n)
          Description of the Method

void write(byte[] b)
          Description of the Method

void write(byte[] b, int pos, int len)
          Description of the Method

void write(int b)
          Description of the Method

Methods inherited from class com.objectwave.utility.BufferedRandomAccessFile

close, commitBuffer, fillBuffer, getFD, readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, syncBuffer, writeBoolean, writeByte, writeBytes, writeChar, writeChars, writeDouble, writeFloat, writeInt, writeLong, writeShort, writeUTF

Methods inherited from class java.lang.Object

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

Constructor Detail