opendaylight/config/config-manager-facade-xml/src/main/java/org/opendaylight/controller/config/facade/xml/strategy/EditStrategyType.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.controller.config.facade.xml.strategy;
  10
  11 import java.util.EnumSet;
  12 import java.util.Set;
  13 import org.opendaylight.controller.config.facade.xml.exception.OperationNotPermittedException;
  14 import org.opendaylight.controller.config.util.xml.DocumentedException;
  15
  16 public enum EditStrategyType {
  17     // can be default
  18     merge, replace, none,
  19     // additional per element
  20     delete, remove, recreate;
  21
  22     private static final Set<EditStrategyType> defaultStrats = EnumSet.of(merge, replace, none);
  23
  24     public static EditStrategyType getDefaultStrategy() {
  25         return merge;
  26     }
  27
  28     public boolean isEnforcing() {
  29         switch (this) {
  30         case merge:
  31         case none:
  32         case remove:
  33         case delete:
  34         case recreate:
  35             return false;
  36         case replace:
  37             return true;
  38
  39         default:
  40             throw new IllegalStateException("Default edit strategy can be only of value " + defaultStrats + " but was "
  41                     + this);
  42         }
  43     }
  44     public static void compareParsedStrategyToDefaultEnforcing(EditStrategyType parsedStrategy,
  45                                                                   EditStrategyType defaultStrategy) throws OperationNotPermittedException {
  46         if (defaultStrategy.isEnforcing()) {
  47             if (parsedStrategy != defaultStrategy){
  48                 throw new OperationNotPermittedException(String.format("With "
  49                         + defaultStrategy
  50                         + " as default-operation operations on module elements are not permitted since the default option is restrictive"),
  51                         DocumentedException.ErrorType.APPLICATION,
  52                         DocumentedException.ErrorTag.OPERATION_FAILED,
  53                         DocumentedException.ErrorSeverity.ERROR);
  54             }
  55         }
  56
  57     }
  58     public EditConfigStrategy getFittingStrategy() {
  59         switch (this) {
  60         case merge:
  61             return new MergeEditConfigStrategy();
  62         case replace:
  63             return new ReplaceEditConfigStrategy();
  64         case delete:
  65             return new DeleteEditConfigStrategy();
  66         case remove:
  67             return new RemoveEditConfigStrategy();
  68         case recreate:
  69             return new ReCreateEditConfigStrategy();
  70         case none:
  71             return new NoneEditConfigStrategy();
  72         default:
  73             throw new UnsupportedOperationException("Unimplemented edit config strategy" + this);
  74         }
  75     }
  76 }