InputBuffer (Apache Tomcat 8.5.61 API Documentation)

java.lang.Object
- java.io.Reader
- - org.apache.catalina.connector.InputBuffer

All Implemented Interfaces:

Closeable, AutoCloseable, Readable, ByteChunk.ByteInputChannel, ApplicationBufferHandler
```
public class InputBuffer
extends Reader
implements ByteChunk.ByteInputChannel, ApplicationBufferHandler
```
The buffer used by Tomcat request. This is a derivative of the Tomcat 3.3 OutputBuffer, adapted to handle input instead of output. This allows complete recycling of the facade objects (the ServletInputStream and the BufferedReader).

Author:

Remy Maucherat

Field Summary

Fields
Modifier and Type	Field and Description
`int`	`BYTE_STATE`
`int`	`CHAR_STATE`
`protected B2CConverter`	`conv` Current byte to char converter.
`static int`	`DEFAULT_BUFFER_SIZE`
`int`	`INITIAL_STATE`
`protected static StringManager`	`sm` The string manager for this package.

Fields inherited from class java.io.Reader
lock

Constructor Summary

Constructors
Constructor and Description

InputBuffer()
Default constructor.

InputBuffer(int size)
Alternate constructor which allows specifying the initial buffer size.

Constructors
Constructor and Description
`InputBuffer()` Default constructor.
`InputBuffer(int size)` Alternate constructor which allows specifying the initial buffer size.

Method Summary

Methods
Modifier and Type	Method and Description
`int`	`available()`
`void`	`checkConverter()`
`void`	`close()` Close the input buffer.
`void`	`expand(int size)`
`ByteBuffer`	`getByteBuffer()`
`boolean`	`isFinished()`
`boolean`	`isReady()`
`void`	`mark(int readAheadLimit)`
`boolean`	`markSupported()`
`int`	`read()`
`int`	`read(byte[] b, int off, int len)`
`int`	`read(ByteBuffer to)` Transfers bytes from the buffer to the specified ByteBuffer.
`int`	`read(char[] cbuf)`
`int`	`read(char[] cbuf, int off, int len)`
`int`	`readByte()`
`boolean`	`ready()`
`int`	`realReadBytes()` Reads new bytes in the byte chunk.
`int`	`realReadChars()`
`void`	`recycle()` Recycle the output buffer.
`void`	`reset()`
`void`	`setByteBuffer(ByteBuffer buffer)`
`void`	`setEncoding(String s)` Deprecated. This method will be removed in Tomcat 9.0.x
`void`	`setReadListener(ReadListener listener)`
`void`	`setRequest(Request coyoteRequest)` Associated Coyote request.
`long`	`skip(long n)`

Methods inherited from class java.io.Reader
read

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

- Field Detail
  - sm
```
protected static final StringManager sm
```
    The string manager for this package.
  - DEFAULT_BUFFER_SIZE
```
public static final int DEFAULT_BUFFER_SIZE
```
    See Also:
    Constant Field Values
  - INITIAL_STATE
```
public final int INITIAL_STATE
```
    See Also:
    Constant Field Values
  - CHAR_STATE
```
public final int CHAR_STATE
```
    See Also:
    Constant Field Values
  - BYTE_STATE
```
public final int BYTE_STATE
```
    See Also:
    Constant Field Values
  - conv
```
protected B2CConverter conv
```
    Current byte to char converter.
- Constructor Detail
  - InputBuffer
```
public InputBuffer()
```
    Default constructor. Allocate the buffer with the default buffer size.
  - InputBuffer
```
public InputBuffer(int size)
```
    Alternate constructor which allows specifying the initial buffer size.
    
    Parameters:
    size - Buffer size to use
- Method Detail
  - setRequest
```
public void setRequest(Request coyoteRequest)
```
    Associated Coyote request.
    
    Parameters:
    coyoteRequest - Associated Coyote request
  - recycle
```
public void recycle()
```
    Recycle the output buffer.
  - close
```
public void close()
           throws IOException
```
    Close the input buffer.
    
    Specified by:
    
    close in interface Closeable
    
    Specified by:
    
    close in interface AutoCloseable
    
    Specified by:
    
    close in class Reader
    
    Throws:
    
    IOException - An underlying IOException occurred
  - available
```
public int available()
```
  - setReadListener
```
public void setReadListener(ReadListener listener)
```
  - isFinished
```
public boolean isFinished()
```
  - isReady
```
public boolean isReady()
```
  - realReadBytes
```
public int realReadBytes()
                  throws IOException
```
    Reads new bytes in the byte chunk.
    
    Specified by:
    
    realReadBytes in interface ByteChunk.ByteInputChannel
    
    Returns:
    The number of bytes read
    
    Throws:
    
    IOException - An underlying IOException occurred
  - readByte
```
public int readByte()
             throws IOException
```
    Throws:
    
    IOException
  - read
```
public int read(byte[] b,
       int off,
       int len)
         throws IOException
```
    Throws:
    
    IOException
  - read
```
public int read(ByteBuffer to)
         throws IOException
```
    Transfers bytes from the buffer to the specified ByteBuffer. After the operation the position of the ByteBuffer will be returned to the one before the operation, the limit will be the position incremented by the number of the transferred bytes.
    
    Parameters:
    to - the ByteBuffer into which bytes are to be written.
    
    Returns:
    an integer specifying the actual number of bytes read, or -1 if the end of the stream is reached
    
    Throws:
    
    IOException - if an input or output exception has occurred
  - setEncoding
```
@Deprecated
public void setEncoding(String s)
```
    Deprecated. This method will be removed in Tomcat 9.0.x
    
    Parameters:
    s - New encoding value
  - realReadChars
```
public int realReadChars()
                  throws IOException
```
    Throws:
    
    IOException
  - read
```
public int read()
         throws IOException
```
    Overrides:
    
    read in class Reader
    
    Throws:
    
    IOException
  - read
```
public int read(char[] cbuf)
         throws IOException
```
    Overrides:
    
    read in class Reader
    
    Throws:
    
    IOException
  - read
```
public int read(char[] cbuf,
       int off,
       int len)
         throws IOException
```
    Specified by:
    
    read in class Reader
    
    Throws:
    
    IOException
  - skip
```
public long skip(long n)
          throws IOException
```
    Overrides:
    
    skip in class Reader
    
    Throws:
    
    IOException
  - ready
```
public boolean ready()
              throws IOException
```
    Overrides:
    
    ready in class Reader
    
    Throws:
    
    IOException
  - markSupported
```
public boolean markSupported()
```
    Overrides:
    
    markSupported in class Reader
  - mark
```
public void mark(int readAheadLimit)
          throws IOException
```
    Overrides:
    
    mark in class Reader
    
    Throws:
    
    IOException
  - reset
```
public void reset()
           throws IOException
```
    Overrides:
    
    reset in class Reader
    
    Throws:
    
    IOException
  - checkConverter
```
public void checkConverter()
                    throws IOException
```
    Throws:
    
    IOException
  - setByteBuffer
```
public void setByteBuffer(ByteBuffer buffer)
```
    Specified by:
    
    setByteBuffer in interface ApplicationBufferHandler
  - getByteBuffer
```
public ByteBuffer getByteBuffer()
```
    Specified by:
    
    getByteBuffer in interface ApplicationBufferHandler
  - expand
```
public void expand(int size)
```
    Specified by:
    
    expand in interface ApplicationBufferHandler

Class InputBuffer

Field Summary

Fields inherited from class java.io.Reader

Constructor Summary

Method Summary

Methods inherited from class java.io.Reader

Methods inherited from class java.lang.Object

Field Detail

sm

DEFAULT_BUFFER_SIZE

INITIAL_STATE

CHAR_STATE

BYTE_STATE

conv

Constructor Detail

InputBuffer

InputBuffer

Method Detail

setRequest

recycle

close

available

setReadListener

isFinished

isReady

realReadBytes

readByte

read

read

setEncoding

realReadChars

read

read

read

skip

ready

markSupported

mark

reset

checkConverter

setByteBuffer

getByteBuffer

expand