Package herddb.utils

Class ExtendedDataInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

java.io.DataInputStream

herddb.utils.ExtendedDataInputStream

All Implemented Interfaces:

Closeable, DataInput, AutoCloseable

public class ExtendedDataInputStream
extends DataInputStream

Extended version of DataInputStream

Author:

enrico.olivelli, diego.salvi

See Also:

ExtendedDataOutputStream

Field Summary

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

Constructors

Constructor	Description
ExtendedDataInputStream(InputStream in)

Method Summary

Modifier and Type	Method	Description
boolean	isEof()
byte[]	readArray()
Bytes	readBytes()
int	readVInt()	Reads an int stored in variable-length format.
protected int	readVInt(byte first)
int	readVIntNoEOFException()	Same as readVInt() but does not throw EOFException.
long	readVLong()	Reads a long stored in variable-length format.
int	readZInt()
long	readZLong()
void	skipArray()
void	skipBoolean()
void	skipDouble()
void	skipInt()
void	skipLong()

Methods inherited from class java.io.DataInputStream

read, read, readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, readUTF, skipBytes

Methods inherited from class java.io.FilterInputStream

available, close, mark, markSupported, read, reset, skip

Methods inherited from class java.io.InputStream

nullInputStream, readAllBytes, readNBytes, readNBytes, transferTo

Methods inherited from class java.lang.Object

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

Constructor Detail

ExtendedDataInputStream

public ExtendedDataInputStream(InputStream in)

Method Detail

readVInt

public int readVInt()
             throws IOException

Reads an int stored in variable-length format. Reads between one and five bytes. Smaller values take fewer bytes. Negative numbers are not supported.

Returns:

Throws:

IOException

readVInt

protected int readVInt(byte first)
                throws IOException

Throws:

IOException

isEof

public boolean isEof()

Returns:

See Also:

readVIntNoEOFException()

readVIntNoEOFException

public int readVIntNoEOFException()
                           throws IOException

Same as readVInt() but does not throw EOFException. Since throwing exceptions is very expensive for the JVM this operation is preferred if you could hit and EOF

Returns:

Throws:

IOException

See Also:

isEof()

readVLong

public long readVLong()
               throws IOException

Reads a long stored in variable-length format. Reads between one and nine bytes. Smaller values take fewer bytes. Negative numbers are not supported.

Returns:

Throws:

IOException

readZInt

public int readZInt()
             throws IOException

Throws:

IOException

readZLong

public long readZLong()
               throws IOException

Throws:

IOException

readBytes

public Bytes readBytes()
                throws IOException

Throws:

IOException

readArray

public byte[] readArray()
                 throws IOException

Throws:

IOException

skipArray

public void skipArray()
               throws IOException

Throws:

IOException

skipInt

public void skipInt()
             throws IOException

Throws:

IOException

skipLong

public void skipLong()
              throws IOException

Throws:

IOException

skipDouble

public void skipDouble()
                throws IOException

Throws:

IOException

skipBoolean

public void skipBoolean()
                 throws IOException

Throws:

IOException