/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at
 * trunk/opends/resource/legal-notices/OpenDS.LICENSE
 * or https://OpenDS.dev.java.net/OpenDS.LICENSE.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at
 * trunk/opends/resource/legal-notices/OpenDS.LICENSE.  If applicable,
 * add the following below this CDDL HEADER, with the fields enclosed
 * by brackets "[]" replaced with your own identifying information:
 *      Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 *
 *
 *      Copyright 2006-2008 Sun Microsystems, Inc.
 */
package org.opends.server.protocols.ldap;

import org.opends.server.protocols.asn1.ASN1Writer;

import java.io.IOException;


/**
 * This class defines the structures and methods for an LDAP protocol op, which
 * is the core of an LDAP message.
 */
public abstract class ProtocolOp
{
  /**
   * Retrieves the BER type for this protocol op.
   *
   * @return  The BER type for this protocol op.
   */
  public abstract byte getType();



  /**
   * Retrieves the name for this protocol op type.
   *
   * @return  The name for this protocol op type.
   */
  public abstract String getProtocolOpName();



  /**
   * Writes this protocol op to an ASN.1 output stream.
   *
   * @param stream The ASN.1 output stream to write to.
   * @throws IOException If a problem occurs while writing to the stream.
   */
  public abstract void write(ASN1Writer stream) throws IOException;


  /**
   * Retrieves a string representation of this LDAP protocol op.
   *
   * @return  A string representation of this LDAP protocol op.
   */
  public String toString()
  {
    StringBuilder buffer = new StringBuilder();
    toString(buffer);
    return buffer.toString();
  }



  /**
   * Appends a string representation of this LDAP protocol op to the provided
   * buffer.
   *
   * @param  buffer  The buffer to which the string should be appended.
   */
  public abstract void toString(StringBuilder buffer);



  /**
   * Appends a multi-line string representation of this LDAP protocol op to the
   * provided buffer.
   *
   * @param  buffer  The buffer to which the information should be appended.
   * @param  indent  The number of spaces from the margin that the lines should
   *                 be indented.
   */
  public abstract void toString(StringBuilder buffer, int indent);
}