/**
    * This file is part of GoldenGate Project (named also GoldenGate or GG).
    * 
    * Copyright 2009, Frederic Bregier, and individual contributors by the @author
    * tags. See the COPYRIGHT.txt in the distribution for a full listing of
    * individual contributors.
    * 
    * All GoldenGate Project is free software: you can redistribute it and/or
    * modify it under the terms of the GNU General Public License as published by
   * the Free Software Foundation, either version 3 of the License, or (at your
   * option) any later version.
   * 
   * GoldenGate is distributed in the hope that it will be useful, but WITHOUT ANY
   * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
   * A PARTICULAR PURPOSE. See the GNU General Public License for more details.
   * 
   * You should have received a copy of the GNU General Public License along with
   * GoldenGate . If not, see <http://www.gnu.org/licenses/>.
   */
  package goldengate.snmp;
  
  import goldengate.snmp.interf.GgInterfaceVariableFactory;
  import goldengate.snmp.utils.GgDefaultVariableFactory;
  import goldengate.snmp.utils.GgMORow;
  import goldengate.snmp.utils.GgMOScalar;
  
  import org.snmp4j.agent.MOAccess;
  import org.snmp4j.agent.mo.MOAccessImpl;
  import org.snmp4j.smi.Counter32;
  import org.snmp4j.smi.Counter64;
  import org.snmp4j.smi.Gauge32;
  import org.snmp4j.smi.Integer32;
  import org.snmp4j.smi.IpAddress;
  import org.snmp4j.smi.OID;
  import org.snmp4j.smi.OctetString;
  import org.snmp4j.smi.Opaque;
  import org.snmp4j.smi.SMIConstants;
  import org.snmp4j.smi.TimeTicks;
  import org.snmp4j.smi.Variable;
  
  /**
   * This class creates and returns ManagedObjects
   * 
   * @author Frederic Bregier
   * 
   */
  public class GgMOFactory {
      /**
       * To be setup to default Factory to be used or kept as null for default one
       */
      public static GgInterfaceVariableFactory factory = null;
  
      /**
       * Default one
       */
      private static GgInterfaceVariableFactory defaultFactory = new GgDefaultVariableFactory();
  
      /**
       * 
       * @param oid
       * @param value
       * @param type
       * @return an MOScalar according to the argument
       */
      public static GgMOScalar createReadOnly(OID oid, Object value, int type,
              GgMORow row, int mibLevel, int entry) {
          return new GgMOScalar(oid, MOAccessImpl.ACCESS_READ_ONLY, getVariable(
                  oid, value, type, mibLevel, entry), row);
      }
  
      /**
       * 
       * @param oid
       * @param value
       * @param type
       * @param access
       * @return an MOScalar according to the argument
       */
      public static GgMOScalar create(OID oid, Object value, int type,
              MOAccess access, GgMORow row, int mibLevel, int entry) {
          return new GgMOScalar(oid, access, getVariable(oid, value, type,
                  mibLevel, entry), row);
      }
  
      /**
       * Create a Variable using the arguments
       * 
       * @param oid
       * @param value
       * @param type
       * @param mibLevel
       * @param entry
       * @return a Variable using the arguments
       */
      public static Variable getVariable(OID oid, Object value, int type,
              int mibLevel, int entry) {
          Variable var = null;
          GgInterfaceVariableFactory vf;
          if (factory == null) {
             vf = defaultFactory;
         } else {
             vf = factory;
         }
         var = vf.getVariable(oid, type, mibLevel, entry);
         if (value != null) {
             switch (type) {
                 case SMIConstants.SYNTAX_INTEGER:
                     // case SMIConstants.SYNTAX_INTEGER32:
                     ((Integer32) var).setValue((Integer) value);
                     break;
                 case SMIConstants.SYNTAX_OCTET_STRING:
                     // case SMIConstants.SYNTAX_BITS:
                     ((OctetString) var).setValue(value.toString());
                     break;
                 case SMIConstants.SYNTAX_NULL:
                     break;
                 case SMIConstants.SYNTAX_OBJECT_IDENTIFIER:
                     ((OID) var).setValue(value.toString());
                     break;
                 case SMIConstants.SYNTAX_IPADDRESS:
                     ((IpAddress) var).setValue(value.toString());
                     break;
                 case SMIConstants.SYNTAX_COUNTER32:
                     ((Counter32) var).setValue((Long) value);
                     break;
                 case SMIConstants.SYNTAX_GAUGE32:
                     // case SMIConstants.SYNTAX_UNSIGNED_INTEGER32:
                     ((Gauge32) var).setValue((Long) value);
                     break;
                 case SMIConstants.SYNTAX_TIMETICKS:
                     if (value instanceof TimeTicks) {
                         ((TimeTicks) var).setValue(((TimeTicks) value)
                                 .toString());
                     } else {
                         ((TimeTicks) var).setValue((Long) value);
                     }
                     break;
                 case SMIConstants.SYNTAX_OPAQUE:
                     ((Opaque) var).setValue((byte[]) value);
                     break;
                 case SMIConstants.SYNTAX_COUNTER64:
                     ((Counter64) var).setValue((Long) value);
                     break;
                 default:
                     throw new IllegalArgumentException("Unmanaged Type: " +
                             value.getClass());
             }
         }
         return var;
     }
 
     /**
      * Set a Variable value
      * 
      * @param var
      * @param value
      * @param type
      */
     public static void setVariable(Variable var, Object value, int type) {
         if (value != null) {
             switch (type) {
                 case SMIConstants.SYNTAX_INTEGER:
                     // case SMIConstants.SYNTAX_INTEGER32:
                     ((Integer32) var).setValue((Integer) value);
                     break;
                 case SMIConstants.SYNTAX_OCTET_STRING:
                     // case SMIConstants.SYNTAX_BITS:
                     ((OctetString) var).setValue(value.toString());
                     break;
                 case SMIConstants.SYNTAX_NULL:
                     break;
                 case SMIConstants.SYNTAX_OBJECT_IDENTIFIER:
                     ((OID) var).setValue(value.toString());
                     break;
                 case SMIConstants.SYNTAX_IPADDRESS:
                     ((IpAddress) var).setValue(value.toString());
                     break;
                 case SMIConstants.SYNTAX_COUNTER32:
                     ((Counter32) var).setValue((Long) value);
                     break;
                 case SMIConstants.SYNTAX_GAUGE32:
                     // case SMIConstants.SYNTAX_UNSIGNED_INTEGER32:
                     ((Gauge32) var).setValue((Long) value);
                     break;
                 case SMIConstants.SYNTAX_TIMETICKS:
                     if (value instanceof TimeTicks) {
                         ((TimeTicks) var).setValue(((TimeTicks) value)
                                 .toString());
                     } else {
                         ((TimeTicks) var).setValue((Long) value);
                     }
                     break;
                 case SMIConstants.SYNTAX_OPAQUE:
                     ((Opaque) var).setValue((byte[]) value);
                     break;
                 case SMIConstants.SYNTAX_COUNTER64:
                     ((Counter64) var).setValue((Long) value);
                     break;
                 default:
                     throw new IllegalArgumentException("Unmanaged Type: " +
                             value.getClass());
             }
         }
     }
 }