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;
  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             return false;
  35         case replace:
  36             return true;
  37
  38         default:
  39             throw new IllegalStateException("Default edit strategy can be only of value " + defaultStrats + " but was "
  40                     + this);
  41         }
  42     }
  43     public static void compareParsedStrategyToDefaultEnforcing(EditStrategyType parsedStrategy,
  44                                                                   EditStrategyType defaultStrategy) throws OperationNotPermittedException {
  45         if (defaultStrategy.isEnforcing()) {
  46             if (parsedStrategy != defaultStrategy){
  47                 throw new OperationNotPermittedException(String.format("With "
  48                         + defaultStrategy
  49                         + " as default-operation operations on module elements are not permitted since the default option is restrictive"),
  50                         DocumentedException.ErrorType.application,
  51                         DocumentedException.ErrorTag.operation_failed,
  52                         DocumentedException.ErrorSeverity.error);
  53             }
  54         }
  55
  56     }
  57     public EditConfigStrategy getFittingStrategy() {
  58         switch (this) {
  59         case merge:
  60             return new MergeEditConfigStrategy();
  61         case replace:
  62             return new ReplaceEditConfigStrategy();
  63         case delete:
  64             return new DeleteEditConfigStrategy();
  65         case remove:
  66             return new RemoveEditConfigStrategy();
  67         case none:
  68             return new NoneEditConfigStrategy();
  69         default:
  70             throw new UnsupportedOperationException("Unimplemented edit config strategy" + this);
  71         }
  72     }
  73 }