org.apache.zookeeper.graph

Class RandomAccessFileReader

java.lang.Object

java.io.Reader

org.apache.zookeeper.graph.RandomAccessFileReader

All Implemented Interfaces:

Closeable, DataInput, AutoCloseable, Readable

public class RandomAccessFileReader
extends Reader
implements DataInput

Field Summary

Fields inherited from class java.io.Reader

lock

Constructor Summary

Constructors

Constructor and Description
RandomAccessFileReader(File f)

Method Summary

Modifier and Type	Method and Description
void	close()
long	getPosition() Seek interface
static void	main(String[] args)
boolean	markSupported() Reader interface
int	read(byte[] buf, int off, int len)
int	read(char[] cbuf, int off, int len) copy what we can from buffer.
boolean	readBoolean()
byte	readByte()
char	readChar()
double	readDouble()
float	readFloat()
void	readFully(byte[] b) DataInput interface
void	readFully(byte[] b, int off, int len)
int	readInt()
String	readLine() works like the usual readLine but disregards \r to make things easier
long	readLong()
short	readShort()
int	readUnsignedByte()
int	readUnsignedShort()
String	readUTF()
void	seek(long pos)
int	skipBytes(int n)

Methods inherited from class java.io.Reader

mark, read, read, read, ready, reset, skip

Methods inherited from class java.lang.Object

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

Constructor Detail

RandomAccessFileReader

public RandomAccessFileReader(File f)
                       throws FileNotFoundException

Throws:

FileNotFoundException

Method Detail

markSupported

public boolean markSupported()

Reader interface

Overrides:

markSupported in class Reader

read

public int read(char[] cbuf,
                int off,
                int len)
         throws IOException

copy what we can from buffer. if it's not enough, fill buffer again and copy again

Specified by:

read in class Reader

Throws:

IOException

read

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

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

close in class Reader

Throws:

IOException

getPosition

public long getPosition()

Seek interface

seek

public void seek(long pos)
          throws IOException

Throws:

IOException

readLine

public String readLine()
                throws IOException

works like the usual readLine but disregards \r to make things easier

Specified by:

readLine in interface DataInput

Throws:

IOException

readFully

public void readFully(byte[] b)
               throws IOException

DataInput interface

Specified by:

readFully in interface DataInput

Throws:

IOException

readFully

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

Specified by:

readFully in interface DataInput

Throws:

IOException

skipBytes

public int skipBytes(int n)
              throws IOException

Specified by:

skipBytes in interface DataInput

Throws:

IOException

readBoolean

public boolean readBoolean()
                    throws IOException

Specified by:

readBoolean in interface DataInput

Throws:

IOException

readByte

public byte readByte()
              throws IOException

Specified by:

readByte in interface DataInput

Throws:

IOException

readUnsignedByte

public int readUnsignedByte()
                     throws IOException

Specified by:

readUnsignedByte in interface DataInput

Throws:

IOException

readShort

public short readShort()
                throws IOException

Specified by:

readShort in interface DataInput

Throws:

IOException

readUnsignedShort

public int readUnsignedShort()
                      throws IOException

Specified by:

readUnsignedShort in interface DataInput

Throws:

IOException

readChar

public char readChar()
              throws IOException

Specified by:

readChar in interface DataInput

Throws:

IOException

readInt

public int readInt()
            throws IOException

Specified by:

readInt in interface DataInput

Throws:

IOException

readLong

public long readLong()
              throws IOException

Specified by:

readLong in interface DataInput

Throws:

IOException

readFloat

public float readFloat()
                throws IOException

Specified by:

readFloat in interface DataInput

Throws:

IOException

readDouble

public double readDouble()
                  throws IOException

Specified by:

readDouble in interface DataInput

Throws:

IOException

readUTF

public String readUTF()
               throws IOException

Specified by:

readUTF in interface DataInput

Throws:

IOException

main

public static void main(String[] args)
                 throws IOException

Throws:

IOException