FastInputStream (Oracle - Berkeley DB Java API)
Date: 2009-12-18

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## com.sleepycat.util
Class FastInputStream

    java.lang.Object
      java.io.InputStream
          com.sleepycat.util.FastInputStream

All Implemented Interfaces:
  Closeable

Direct Known Subclasses:
  TupleInput

    public class FastInputStream

extends InputStream

A replacement for ByteArrayInputStream that does not synchronize every byte read.

This class extends `InputStream` and its `read()` methods allow it to be used as a standard input stream. In addition, it provides `readFast()` methods that are not declared to throw `IOException`. `IOException` is never thrown by this class.

Field Summary
`protected byte[]` | `buf`
`protected int` | `len`
`protected int` | `mark`
`protected int` | `off`

Constructor Summary
`FastInputStream(byte[] buffer)` Creates an input stream.
`FastInputStream(byte[] buffer, int offset, int length)` Creates an input stream.

Method Summary
`int` | `available()`
`byte[]` | `getBufferBytes()` Returns the underlying data being read.
`int` | `getBufferLength()` Returns the end of the buffer being read.
`int` | `getBufferOffset()` Returns the offset at which data is being read from the buffer.
`void` | `mark(int readLimit)`
`boolean` | `markSupported()`
`int` | `read()`
`int` | `read(byte[] toBuf)`
`int` | `read(byte[] toBuf, int offset, int length)`
`int` | `readFast()` Equivalent to `read()`but does not throw `IOException`.``
`int` | `readFast(byte[] toBuf)` Equivalent to `read(byte[])`but does not throw `IOException`.``
`int` | `readFast(byte[] toBuf, int offset, int length)` Equivalent to `read(byte[],int,int)`but does not throw `IOException`.``
`void` | `reset()`
`long` | `skip(long count)`
`void` | `skipFast(int count)` Equivalent to `skip()`but takes an int parameter instead of a long, and does not check whether the count given is larger than the number of remaining bytes.``

Methods inherited from class java.io.InputStream
`close`

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

Field Detail

### len

    protected int len

### off

    protected int off

### mark

    protected int mark

### buf

    protected byte[] buf

Constructor Detail

### FastInputStream

    public FastInputStream(byte[] buffer)

  Creates an input stream.

  Parameters:
    `buffer` - the data to read.

### FastInputStream

    public FastInputStream(byte[] buffer,
                           int offset,
                           int length)

  Creates an input stream.

  Parameters:
    `buffer` - the data to read.
    `offset` - the byte offset at which to begin reading.
    `length` - the number of bytes to read.

Method Detail

### available

    public int available()

  Overrides:
    `available` in class `InputStream`

### markSupported

    public boolean markSupported()

  Overrides:
    `markSupported` in class `InputStream`

### mark

    public void mark(int readLimit)

  Overrides:
    `mark` in class `InputStream`

### reset

    public void reset()

  Overrides:
    `reset` in class `InputStream`

### skip

    public long skip(long count)

  Overrides:
    `skip` in class `InputStream`

### read

    public int read()

  Specified by:
    `read` in class `InputStream`

### read

    public int read(byte[] toBuf)

  Overrides:
    `read` in class `InputStream`

### read

    public int read(byte[] toBuf,
                    int offset,
                    int length)

  Overrides:
    `read` in class `InputStream`

### skipFast

    public final void skipFast(int count)

  Equivalent to `skip()`but takes an int parameter instead of a long, and does not check whether the count given is larger than the number of remaining bytes.

  ``
  See Also:
    `skip(long)`

### readFast

    public final int readFast()

  Equivalent to `read()`but does not throw `IOException`.

  ``
  See Also:
    `read()`

### readFast

    public final int readFast(byte[] toBuf)

  Equivalent to `read(byte[])`but does not throw `IOException`.

  ``
  See Also:
    `read(byte[])`

### readFast

    public final int readFast(byte[] toBuf,
                              int offset,
                              int length)

  Equivalent to `read(byte[],int,int)`but does not throw `IOException`.

  ``
  See Also:
    `read(byte[],int,int)`

### getBufferBytes

    public final byte[] getBufferBytes()

  Returns the underlying data being read.

  Returns:
    the underlying data.

### getBufferOffset

    public final int getBufferOffset()

  Returns the offset at which data is being read from the buffer.

  Returns:
    the offset at which data is being read.

### getBufferLength

    public final int getBufferLength()

  Returns the end of the buffer being read.

  Returns:
    the end of the buffer.

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