/* Operation.java --
   Copyright (C) 2003, 2006 Free Software Foundation, Inc.

This file is a part of GNU Classpath.

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package gnu.javax.crypto.assembly;

/**
 * An enumeration type for specifying the operation type of a
 * {@link Transformer}.
 * <p>
 * The possible values for this type are two:
 * <ol>
 * <li>PRE_PROCESSING: where the input data is first processed by the current
 * {@link Transformer} before being passed to the rest of the chain; and</li>
 * <li>POST_PROCESSING: where the input data is first passed to the rest of the
 * chain, and the resulting bytes are then processed by the current
 * {@link Transformer}.</li>
 * </ol>
 */
public final class Operation
{
  public static final Operation PRE_PROCESSING = new Operation(1);

  public static final Operation POST_PROCESSING = new Operation(2);

  private int value;

  private Operation(int value)
  {
    super();

    this.value = value;
  }

  public String toString()
  {
    return (this == PRE_PROCESSING ? "pre-processing" : "post-processing");
  }
}