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/* **************************************************************************
 * $OpenLDAP: pkg/jldap/com/novell/ldap/util/LDAPWriter.java,v 1.8 2003/02/04 18:57:47 vtag Exp $
 *
 * Copyright (C) 2002 - 2003 Novell, Inc. All Rights Reserved.
 *
 * THIS WORK IS SUBJECT TO U.S. AND INTERNATIONAL COPYRIGHT LAWS AND
 * TREATIES. USE, MODIFICATION, AND REDISTRIBUTION OF THIS WORK IS SUBJECT
 * TO VERSION 2.0.1 OF THE OPENLDAP PUBLIC LICENSE, A COPY OF WHICH IS
 * AVAILABLE AT HTTP://WWW.OPENLDAP.ORG/LICENSE.HTML OR IN THE FILE "LICENSE"
 * IN THE TOP-LEVEL DIRECTORY OF THE DISTRIBUTION. ANY USE OR EXPLOITATION
 * OF THIS WORK OTHER THAN AS AUTHORIZED IN VERSION 2.0.1 OF THE OPENLDAP
 * PUBLIC LICENSE, OR OTHER PRIOR WRITTEN CONSENT FROM NOVELL, COULD SUBJECT
 * THE PERPETRATOR TO CRIMINAL AND CIVIL LIABILITY.
 ******************************************************************************/
package com.novell.ldap.util;

import java.io.IOException;
import com.novell.ldap.LDAPControl;
import com.novell.ldap.LDAPEntry;
import com.novell.ldap.LDAPException;
import com.novell.ldap.LDAPMessage;

/**
 * Describes the interfaces used by applications to write
 * LDAP messages to an output destination.
 *
 * @see LDAPReader
 */
public interface LDAPWriter
{
    /**
     * Returns the version of data that will be writen to the output
     * destination.
     *
     * @return the data version as a String value.
     */
    public String getVersion();

    /**
     * Returns the type of data to write to the output destination,
     * true if request data, or false if result data.
     *
     * @return  true if the data type is request data.
     */
    public boolean isRequest();


    /**
     * Writes an LDAPMessage to the output destination.
     *
     * @param message the LDAPMesssage to write.
     *
     * @throws IOException if an I/O error occurs.
     *
     * @throws LDAPException for exceptions from LDAP
     */
     public void writeMessage( LDAPMessage message)
            throws IOException, LDAPException;

    /**
     * Writes an LDAPEntry to the output destination.
     *
     * @param entry the LDAPEntry to write.
     */
     public void writeEntry( LDAPEntry entry)
            throws IOException, LDAPException;

    /**
     * Writes an LDAPEntry to the output destination.
     *
     * @param entry the LDAPEntry to write.
     *
     * @param controls any controls associated with the entry
     *
     * @throws IOException if an I/O error occurs.
     *
     * @throws LDAPException for exceptions from LDAP
     */
     public void writeEntry( LDAPEntry entry, LDAPControl[] controls)
            throws IOException, LDAPException;

    /**
     * Writes an comments to the output destination.
     *
     * @param comments The comments to write
     */
     public void writeComments( String comments)
            throws IOException;

    /**
     * Writes an Exception to the output destination.
     *
     * @param e  Exception to be written.
     */
    public void writeError(Exception e) throws IOException;


    /**
     * Writes any remaining data to the output destination.
     */
     public void finish()
            throws IOException;
}