org.apache.lucene.mockfile

## Class FilterOutputStream2

- java.lang.Object
- - java.io.OutputStream
  - - org.apache.lucene.mockfile.FilterOutputStream2

- All Implemented Interfaces:
    Closeable, Flushable, AutoCloseable

      public abstract class FilterOutputStream2
      extends OutputStream

  A `FilterOutputStream2` contains another `OutputStream`, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.

  Note: unlike `FilterOutputStream` this class delegates every method by default. This means to transform `write` calls, you need to override multiple methods. On the other hand, it is less trappy: a simple implementation that just overrides `close` will not force bytes to be written one-at-a-time.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected OutputStream` | `delegate` The underlying `OutputStream` instance.

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `FilterOutputStream2(OutputStream delegate)` Construct a `FilterOutputStream2` based on the specified base stream.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `close()`
    `void` | `flush()`
    `void` | `write(byte[] b)`
    `void` | `write(byte[] b, int off, int len)`
    `void` | `write(int b)`

    - ### Methods inherited from class java.lang.Object

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

- - ### Field Detail

    - #### delegate

          protected final OutputStream delegate

      The underlying `OutputStream` instance.

  - ### Constructor Detail

    - #### FilterOutputStream2

          public FilterOutputStream2(OutputStream delegate)

      Construct a `FilterOutputStream2` based on the specified base stream.

      Note that base stream is closed if this stream is closed.

      Parameters:
        `delegate` - specified base stream.

  - ### Method Detail

    - #### write

          public void write(byte[] b)
                     throws IOException

      Overrides:
        `write` in class `OutputStream`
      Throws:
        `IOException`

    - #### write

          public void write(byte[] b,
                            int off,
                            int len)
                     throws IOException

      Overrides:
        `write` in class `OutputStream`
      Throws:
        `IOException`

    - #### flush

          public void flush()
                     throws IOException

      Specified by:
        `flush` in interface `Flushable`
      Overrides:
        `flush` in class `OutputStream`
      Throws:
        `IOException`

    - #### close

          public void close()
                     throws IOException

      Specified by:
        `close` in interface `Closeable`
      Specified by:
        `close` in interface `AutoCloseable`
      Overrides:
        `close` in class `OutputStream`
      Throws:
        `IOException`

    - #### write

          public void write(int b)
                     throws IOException

      Specified by:
        `write` in class `OutputStream`
      Throws:
        `IOException`

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