/*
 * The contents of this file are subject to the terms of the Common Development and
 * Distribution License (the License). You may not use this file except in compliance with the
 * License.
 *
 * You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
 * specific language governing permission and limitations under the License.
 *
 * When distributing Covered Software, include this CDDL Header Notice in each file and include
 * the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
 * Header, with the fields enclosed by brackets [] replaced by your own identifying
 * information: "Portions Copyright [year] [name of copyright owner]".
 *
 * Copyright 2008 Sun Microsystems, Inc.
 */
package org.opends.server.admin.client.ldap;


import java.util.Collection;

import javax.naming.NamingException;
import javax.naming.directory.Attributes;
import javax.naming.ldap.LdapName;



/**
 * An LDAP connection adaptor interface which is used to perform LDAP
 * client operations.
 * <p>
 * This interface is provided in order to make it easier to keep track
 * of which JNDI DirContext methods we require and also to facilitate
 * implementation of mock JNDI contexts for unit-testing.
 */
public abstract class LDAPConnection {

  /**
   * Create a new LDAP connection.
   */
  protected LDAPConnection() {
    // No implementation required.
  }



  /**
   * Creates a new entry with the specified set of attributes.
   *
   * @param dn
   *          The name of the entry to be created.
   * @param attributes
   *          The set of attributes.
   * @throws NamingException
   *           If an error occurred whilst creating the entry.
   */
  public abstract void createEntry(LdapName dn, Attributes attributes)
      throws NamingException;



  /**
   * Deletes the named subtree.
   *
   * @param dn
   *          The name of the subtree to be deleted.
   * @throws NamingException
   *           If an error occurred whilst deleting the subtree.
   */
  public abstract void deleteSubtree(LdapName dn) throws NamingException;



  /**
   * Determines whether or not the named entry exists.
   *
   * @param dn
   *          The name of the entry.
   * @return Returns <code>true</code> if the entry exists.
   * @throws NamingException
   *           If an error occurred whilst making the determination.
   */
  public abstract boolean entryExists(LdapName dn) throws NamingException;



  /**
   * Lists the children of the named entry.
   *
   * @param dn
   *          The name of the entry to list.
   * @param filter
   *          An LDAP filter string, or <code>null</code> indicating
   *          the default filter of <code>(objectclass=*)</code>.
   * @return Returns the names of the children.
   * @throws NamingException
   *           If an error occurred whilst listing the children.
   */
  public abstract Collection<LdapName> listEntries(LdapName dn, String filter)
      throws NamingException;



  /**
   * Modifies the attributes of the named entry.
   *
   * @param dn
   *          The name of the entry to be modified.
   * @param mods
   *          The list of attributes which need replacing.
   * @throws NamingException
   *           If an error occurred whilst applying the modifications.
   */
  public abstract void modifyEntry(LdapName dn, Attributes mods)
      throws NamingException;



  /**
   * Reads the attributes of the named entry.
   *
   * @param dn
   *          The name of the entry to be read.
   * @param attrIds
   *          The list of attributes to be retrievd.
   * @return Returns the attributes of the requested entry.
   * @throws NamingException
   *           If an error occurred whilst reading the entry.
   */
  public abstract Attributes readEntry(LdapName dn, Collection<String> attrIds)
      throws NamingException;



  /**
   * Closes the LDAP connection.
   */
  public abstract void unbind();
}