org.apache.cassandra.io
Class BufferedRandomAccessFile
java.lang.Object
java.io.RandomAccessFile
org.apache.cassandra.io.BufferedRandomAccessFile
- All Implemented Interfaces:
- java.io.Closeable, java.io.DataInput, java.io.DataOutput
public final class BufferedRandomAccessFile
- extends java.io.RandomAccessFile
A BufferedRandomAccessFile
is like a
RandomAccessFile
, but it uses a private buffer so that most
operations do not require a disk access.
Note: The operations on this class are unmonitored. Also, the correct
functioning of the RandomAccessFile
methods that are not
overridden here relies on the implementation of those methods in the
superclass.
Constructor Summary |
BufferedRandomAccessFile(java.io.File file,
java.lang.String mode)
Open a new BufferedRandomAccessFile on file
in mode mode , which should be "r" for reading only, or
"rw" for reading and writing. |
BufferedRandomAccessFile(java.io.File file,
java.lang.String mode,
int size)
|
BufferedRandomAccessFile(java.lang.String name,
java.lang.String mode)
Open a new BufferedRandomAccessFile on the file named
name in mode mode , which should be "r" for
reading only, or "rw" for reading and writing. |
BufferedRandomAccessFile(java.lang.String name,
java.lang.String mode,
int size)
|
Methods inherited from class java.io.RandomAccessFile |
getChannel, getFD, readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, setLength, skipBytes, 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 |
BuffSz_
public static final int BuffSz_
- See Also:
- Constant Field Values
BufferedRandomAccessFile
public BufferedRandomAccessFile(java.io.File file,
java.lang.String mode)
throws java.io.IOException
- Open a new
BufferedRandomAccessFile
on file
in mode mode
, which should be "r" for reading only, or
"rw" for reading and writing.
- Throws:
java.io.IOException
BufferedRandomAccessFile
public BufferedRandomAccessFile(java.io.File file,
java.lang.String mode,
int size)
throws java.io.IOException
- Throws:
java.io.IOException
BufferedRandomAccessFile
public BufferedRandomAccessFile(java.lang.String name,
java.lang.String mode)
throws java.io.IOException
- Open a new
BufferedRandomAccessFile
on the file named
name
in mode mode
, which should be "r" for
reading only, or "rw" for reading and writing.
- Throws:
java.io.IOException
BufferedRandomAccessFile
public BufferedRandomAccessFile(java.lang.String name,
java.lang.String mode,
int size)
throws java.io.FileNotFoundException
- Throws:
java.io.FileNotFoundException
getPath
public java.lang.String getPath()
sync
public void sync()
throws java.io.IOException
- Throws:
java.io.IOException
isEOF
public boolean isEOF()
throws java.io.IOException
- Throws:
java.io.IOException
close
public void close()
throws java.io.IOException
- Specified by:
close
in interface java.io.Closeable
- Overrides:
close
in class java.io.RandomAccessFile
- Throws:
java.io.IOException
flush
public void flush()
throws java.io.IOException
- Flush any bytes in the file's buffer that have not yet been written to
disk. If the file was created read-only, this method is a no-op.
- Throws:
java.io.IOException
seek
public void seek(long pos)
throws java.io.IOException
- Overrides:
seek
in class java.io.RandomAccessFile
- Throws:
java.io.IOException
getFilePointer
public long getFilePointer()
- Overrides:
getFilePointer
in class java.io.RandomAccessFile
length
public long length()
throws java.io.IOException
- Overrides:
length
in class java.io.RandomAccessFile
- Throws:
java.io.IOException
read
public int read()
throws java.io.IOException
- Overrides:
read
in class java.io.RandomAccessFile
- Throws:
java.io.IOException
read
public int read(byte[] b)
throws java.io.IOException
- Overrides:
read
in class java.io.RandomAccessFile
- Throws:
java.io.IOException
read
public int read(byte[] b,
int off,
int len)
throws java.io.IOException
- Overrides:
read
in class java.io.RandomAccessFile
- Throws:
java.io.IOException
write
public void write(int b)
throws java.io.IOException
- Specified by:
write
in interface java.io.DataOutput
- Overrides:
write
in class java.io.RandomAccessFile
- Throws:
java.io.IOException
write
public void write(byte[] b)
throws java.io.IOException
- Specified by:
write
in interface java.io.DataOutput
- Overrides:
write
in class java.io.RandomAccessFile
- Throws:
java.io.IOException
write
public void write(byte[] b,
int off,
int len)
throws java.io.IOException
- Specified by:
write
in interface java.io.DataOutput
- Overrides:
write
in class java.io.RandomAccessFile
- Throws:
java.io.IOException
Copyright © 2009 The Apache Software Foundation