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.

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 java.io.InputStream in
- Fields inherited from class java.io.Reader
  lock

Constructor Summary

Constructors
Constructor Description

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

Method Summary

All Methods Instance Methods Concrete Methods
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 java.io.Reader
mark, markSupported, nullReader, read, read, read, ready, reset, skip, transferTo

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - in
```
private final java.io.InputStream in
```
- 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 - on failure
  - readVarInt
```
public int readVarInt()
               throws java.io.IOException
```
    Read a variable size integer.
    
    Returns:
    
    the value
    
    Throws:
    
    java.io.IOException - on failure
  - readChar
```
private char readChar()
               throws java.io.IOException
```
    Read one character from the input stream.
    
    Returns:
    
    the character
    
    Throws:
    
    java.io.IOException
  - close
```
public void close()
           throws java.io.IOException
```
    Specified by:
    
    close in interface java.lang.AutoCloseable
    
    Specified by:
    
    close in interface java.io.Closeable
    
    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