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## com.stc.eways.batchext
Class BatchByteArrayInputStream

    java.lang.Object
      java.io.InputStream
          java.io.ByteArrayInputStream
              com.stc.eways.batchext.BatchByteArrayInputStream

All Implemented Interfaces:
  java.io.Closeable

    public class BatchByteArrayInputStream

extends java.io.ByteArrayInputStream

This is a simple extension of the java.io.ByteArrayInputStream. Unfortunately, the ByteArrayInputStream does not support skipping backwards. That functionality is required for any input stream in record parsing so this class overrides the skip method to allow for passing in a negative offset.

Version:
  $Revision: 1.4 $
Author:
  jim.fu@sun.com
See Also:
  `BatchRecordParser`, `InputStreamFindAdapter`

Field Summary

Fields inherited from class java.io.ByteArrayInputStream
`buf, count, mark, pos`

Constructor Summary
`BatchByteArrayInputStream(byte[] buff)` Pass-through constructor.
`BatchByteArrayInputStream(byte[] buff, int off, int len)` Pass-through constructor.

Method Summary
`long` | `skip(long n)` Override of the skip method in the base class.

Methods inherited from class java.io.ByteArrayInputStream
`available, close, mark, markSupported, read, read, reset`

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

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

Constructor Detail

### BatchByteArrayInputStream

    public BatchByteArrayInputStream(byte[] buff)

  Pass-through constructor.

### BatchByteArrayInputStream

    public BatchByteArrayInputStream(byte[] buff,
                                     int off,
                                     int len)

  Pass-through constructor.

Method Detail

### skip

    public long skip(long n)

  Override of the skip method in the base class. Allow for skipping backwards. The override is fairly simple minded. If the 'n' param is greater than or equal to zero, just call the base class. Otherwise, if negative, back up the position by that amount. If the resulting pos is less than zero, adjust to zero. No other range checking is done.

  Overrides:
    `skip` in class `java.io.ByteArrayInputStream`
  Parameters:
    `n` - The number of bytes to skip.
  Returns:
    If 'n' is greater than or equal to zero, return whatever the base class returns. If negative, returns 'n'.

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