org.h2.store

Class DataReader

java.lang.Object

java.io.Reader

org.h2.store.DataReader

All Implemented Interfaces:

Closeable, AutoCloseable, Readable

public class DataReader
extends Reader

This class is backed by an input stream and supports reading values and variable size data.

Field Summary

Fields inherited from class java.io.Reader

lock

Constructor Summary

Constructors

Constructor and Description
DataReader(InputStream in) Create a new data reader.

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
int	read(char[] buff, int off, int len)
byte	readByte() Read a byte.
void	readFully(byte[] buff, int offset, int len) Read a number of bytes.
String	readString() Read a string from the stream.
int	readVarInt() Read a variable size integer.
long	readVarLong() Read a variable size long.

Methods inherited from class java.io.Reader

mark, markSupported, 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

DataReader

public DataReader(InputStream in)

Create a new data reader.

Parameters:

in - the input stream

Method Detail

readByte

public byte readByte()
              throws IOException

Read a byte.

Returns:

the byte

Throws:

IOException

readVarInt

public int readVarInt()
               throws IOException

Read a variable size integer.

Returns:

the value

Throws:

IOException

readVarLong

public long readVarLong()
                 throws IOException

Read a variable size long.

Returns:

the value

Throws:

IOException

readFully

public void readFully(byte[] buff,
             int offset,
             int len)
               throws IOException

Read a number of bytes.

Parameters:

buff - the target buffer

offset - the offset within the target buffer

len - the number of bytes to read

Throws:

IOException

readString

public String readString()
                  throws IOException

Read a string from the stream.

Returns:

the string

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

read

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

Specified by:

read in class Reader

Throws:

IOException