org.h2.store

Class DataReader

java.lang.Object

java.io.Reader

org.h2.store.DataReader

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, java.lang.Readable

public class DataReader
extends java.io.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(java.io.InputStream in) Create a new data reader.

Method Summary

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 len) Read a number of bytes.
java.lang.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(java.io.InputStream in)

Create a new data reader.

Parameters:

in - the input stream

Method Detail

readByte

public byte readByte()
              throws java.io.IOException

Read a byte.

Returns:

the byte

Throws:

java.io.IOException

readVarInt

public int readVarInt()
               throws java.io.IOException

Read a variable size integer.

Returns:

the value

Throws:

java.io.IOException

readVarLong

public long readVarLong()
                 throws java.io.IOException

Read a variable size long.

Returns:

the value

Throws:

java.io.IOException

readFully

public void readFully(byte[] buff,
                      int len)
               throws java.io.IOException

Read a number of bytes.

Parameters:

buff - the target buffer

len - the number of bytes to read

Throws:

java.io.IOException

readString

public java.lang.String readString()
                            throws java.io.IOException

Read a string from the stream.

Returns:

the string

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in class java.io.Reader

Throws:

java.io.IOException

read

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

Specified by:

read in class java.io.Reader

Throws:

java.io.IOException