AbstractServletInputStream (Apache Tomcat 8.0.53 API Documentation)

java.lang.Object
- java.io.InputStream
- - javax.servlet.ServletInputStream
  - - org.apache.coyote.http11.upgrade.AbstractServletInputStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

Direct Known Subclasses:

AprServletInputStream, BioServletInputStream, Nio2ServletInputStream, NioServletInputStream
```
public abstract class AbstractServletInputStream
extends ServletInputStream
```

Field Summary

Fields
Modifier and Type Field and Description

protected static StringManager sm

Fields
Modifier and Type	Field and Description
`protected static StringManager`	`sm`

Constructor Summary

Constructors
Constructor and Description

AbstractServletInputStream()

Constructors
Constructor and Description
`AbstractServletInputStream()`

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`close()`
`protected abstract void`	`doClose()`
`protected abstract boolean`	`doIsReady()`
`protected abstract int`	`doRead(boolean block, byte[] b, int off, int len)` Abstract method to be overridden by concrete implementations.
`boolean`	`isFinished()` Has the end of this InputStream been reached?
`boolean`	`isReady()` Can data be read from this InputStream without blocking?
`protected void`	`onAllDataRead()`
`protected void`	`onError(java.lang.Throwable t)`
`int`	`read()`
`int`	`read(byte[] b, int off, int len)`
`int`	`readLine(byte[] b, int off, int len)` Reads the input stream, one line at a time.
`void`	`setReadListener(ReadListener listener)` Sets the `ReadListener` for this `ServletInputStream` and thereby switches to non-blocking IO.

Methods inherited from class java.io.InputStream
available, mark, markSupported, read, reset, skip

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
```
- Constructor Detail
  - AbstractServletInputStream
```
public AbstractServletInputStream()
```
- Method Detail
  - isFinished
```
public final boolean isFinished()
```
    Description copied from class: javax.servlet.ServletInputStream
    
    Has the end of this InputStream been reached?
    
    Specified by:
    
    isFinished in class ServletInputStream
    
    Returns:
    true if all the data has been read from the stream, else false
  - isReady
```
public final boolean isReady()
```
    Description copied from class: javax.servlet.ServletInputStream
    
    Can data be read from this InputStream without blocking? Returns If this method is called and returns false, the container will invoke ReadListener.onDataAvailable() when data is available.
    
    Specified by:
    
    isReady in class ServletInputStream
    
    Returns:
    true if data can be read without blocking, else false
  - setReadListener
```
public final void setReadListener(ReadListener listener)
```
    Description copied from class: javax.servlet.ServletInputStream
    
    Sets the ReadListener for this ServletInputStream and thereby switches to non-blocking IO. It is only valid to switch to non-blocking IO within async processing or HTTP upgrade processing.
    
    Specified by:
    
    setReadListener in class ServletInputStream
    
    Parameters:
    listener - The non-blocking IO read listener
  - read
```
public final int read()
               throws java.io.IOException
```
    Specified by:
    
    read in class java.io.InputStream
    
    Throws:
    
    java.io.IOException
  - readLine
```
public final int readLine(byte[] b,
           int off,
           int len)
                   throws java.io.IOException
```
    Description copied from class: javax.servlet.ServletInputStream
    
    Reads the input stream, one line at a time. Starting at an offset, reads bytes into an array, until it reads a certain number of bytes or reaches a newline character, which it reads into the array as well.
    This method returns -1 if it reaches the end of the input stream before reading the maximum number of bytes.
    
    Overrides:
    
    readLine in class ServletInputStream
    
    Parameters:
    b - an array of bytes into which data is read
    off - an integer specifying the character at which this method begins reading
    len - an integer specifying the maximum number of bytes to read
    
    Returns:
    an integer specifying the actual number of bytes read, or -1 if the end of the stream is reached
    
    Throws:
    
    java.io.IOException - if an input or output exception has occurred
  - read
```
public final int read(byte[] b,
       int off,
       int len)
               throws java.io.IOException
```
    Overrides:
    
    read in class java.io.InputStream
    
    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
    
    Overrides:
    
    close in class java.io.InputStream
    
    Throws:
    
    java.io.IOException
  - onAllDataRead
```
protected final void onAllDataRead()
                            throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - onError
```
protected final void onError(java.lang.Throwable t)
```
  - doIsReady
```
protected abstract boolean doIsReady()
                              throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - doRead
```
protected abstract int doRead(boolean block,
         byte[] b,
         int off,
         int len)
                       throws java.io.IOException
```
    Abstract method to be overridden by concrete implementations. The base class will ensure that there are no concurrent calls to this method for the same socket.
    
    Throws:
    
    java.io.IOException
  - doClose
```
protected abstract void doClose()
                         throws java.io.IOException
```
    Throws:
    
    java.io.IOException

Class AbstractServletInputStream

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.io.InputStream

Methods inherited from class java.lang.Object

Field Detail

sm

Constructor Detail

AbstractServletInputStream

Method Detail

isFinished

isReady

setReadListener

read

readLine

read

close

onAllDataRead

onError

doIsReady

doRead

doClose