IdentityOutputFilter (Tomcat API Documentation)
Keywords: org.apache.coyote.http11.filters.IdentityOutputFilter class

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## org.apache.coyote.http11.filters
Class IdentityOutputFilter

    java.lang.Object
      org.apache.coyote.http11.filters.IdentityOutputFilter

All Implemented Interfaces:
  OutputBuffer, OutputFilter

public class IdentityOutputFilter
extends java.lang.Object
implements OutputFilter

Identity output filter.

Author:
  Remy Maucherat

Field Summary
`protected OutputBuffer` | `buffer` Next buffer in the pipeline.
`protected long` | `contentLength` Content length.
`protected static ByteChunk` | `ENCODING`
`protected static java.lang.String` | `ENCODING_NAME`
`protected long` | `remaining` Remaining bytes.

Constructor Summary
`IdentityOutputFilter()`

Method Summary
`int` | `doWrite(ByteChunk chunk, Response res)` Write some bytes.
`long` | `end()` End the current request.
`long` | `getContentLength()` Get content length.
`ByteChunk` | `getEncodingName()` Return the name of the associated encoding; Here, the value is "identity".
`long` | `getRemaining()` Get remaining bytes.
`void` | `recycle()` Make the filter ready to process the next request.
`void` | `setBuffer(OutputBuffer buffer)` Set the next buffer in the filter pipeline.
`void` | `setResponse(Response response)` Some filters need additional parameters from the response.

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

Field Detail

### ENCODING_NAME

    protected static final java.lang.String ENCODING_NAME

See Also:
  Constant Field Values

### ENCODING

    protected static final ByteChunk ENCODING

### contentLength

    protected long contentLength

  Content length.

### remaining

    protected long remaining

  Remaining bytes.

### buffer

    protected OutputBuffer buffer

  Next buffer in the pipeline.

Constructor Detail

### IdentityOutputFilter

    public IdentityOutputFilter()

Method Detail

### getContentLength

    public long getContentLength()

  Get content length.

### getRemaining

    public long getRemaining()

  Get remaining bytes.

### doWrite

    public int doWrite(ByteChunk chunk,
                       Response res)
                throws java.io.IOException

  Write some bytes.

  Specified by:
    `doWrite` in interface `OutputFilter`
  Returns:
    number of bytes written by the filter
  Throws:
    `java.io.IOException`

### setResponse

    public void setResponse(Response response)

  Some filters need additional parameters from the response. All the necessary reading can occur in that method, as this method is called after the response header processing is complete.

  Specified by:
    `setResponse` in interface `OutputFilter`

### setBuffer

    public void setBuffer(OutputBuffer buffer)

  Set the next buffer in the filter pipeline.

  Specified by:
    `setBuffer` in interface `OutputFilter`

### end

    public long end()
             throws java.io.IOException

  End the current request. It is acceptable to write extra bytes using buffer.doWrite during the execution of this method.

  Specified by:
    `end` in interface `OutputFilter`
  Returns:
    Should return 0 unless the filter does some content length delimitation, in which case the number is the amount of extra bytes or missing bytes, which would indicate an error. Note: It is recommended that extra bytes be swallowed by the filter.
  Throws:
    `java.io.IOException`

### recycle

    public void recycle()

  Make the filter ready to process the next request.

  Specified by:
    `recycle` in interface `OutputFilter`

### getEncodingName

    public ByteChunk getEncodingName()

  Return the name of the associated encoding; Here, the value is "identity".

  Specified by:
    `getEncodingName` in interface `OutputFilter`

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