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.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	DataReader.FastEOFException	Constructing such an EOF exception is fast, because the stack trace is not filled in.

Field Summary

Fields

Modifier and Type	Field	Description
private final InputStream	in

Fields inherited from class Reader

lock

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
void	close()
int	read(char[] buff, int off, int len)
byte	readByte()	Read a byte.
private char	readChar()	Read one character from the input stream.
int	readVarInt()	Read a variable size integer.

Methods inherited from class Reader

mark, markSupported, nullReader, of, read, read, read, readAllAsString, readAllLines, ready, reset, skip, transferTo

Methods inherited from class Object

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

Field Details

in

private final InputStream in

Constructor Details

DataReader

public DataReader(InputStream in)

Create a new data reader.

Parameters:

in - the input stream

Method Details

readByte

public byte readByte()
              throws IOException

Read a byte.

Returns:

the byte

Throws:

IOException - on failure

readVarInt

public int readVarInt()
               throws IOException

Read a variable size integer.

Returns:

the value

Throws:

IOException - on failure

readChar

private char readChar()
               throws IOException

Read one character from the input stream.

Returns:

the character

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

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