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

   1 /*
   2  * Copyright (c) 2015, 2017 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> DEFAULT_STRATS = 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(
  41                     "Default edit strategy can be only of value " + DEFAULT_STRATS + " but was " + this);
  42         }
  43     }
  44
  45     public static void compareParsedStrategyToDefaultEnforcing(EditStrategyType parsedStrategy,
  46             EditStrategyType defaultStrategy) throws OperationNotPermittedException {
  47         if (defaultStrategy.isEnforcing()) {
  48             if (parsedStrategy != defaultStrategy) {
  49                 throw new OperationNotPermittedException("With " + defaultStrategy
  50                         + " as default-operation operations on module elements are not permitted since the default "
  51                         + "option is restrictive",
  52                         DocumentedException.ErrorType.APPLICATION,
  53                         DocumentedException.ErrorTag.OPERATION_FAILED,
  54                         DocumentedException.ErrorSeverity.ERROR);
  55             }
  56         }
  57     }
  58
  59     public EditConfigStrategy getFittingStrategy() {
  60         switch (this) {
  61             case merge:
  62                 return new MergeEditConfigStrategy();
  63             case replace:
  64                 return new ReplaceEditConfigStrategy();
  65             case delete:
  66                 return new DeleteEditConfigStrategy();
  67             case remove:
  68                 return new RemoveEditConfigStrategy();
  69             case recreate:
  70                 return new ReCreateEditConfigStrategy();
  71             case none:
  72                 return new NoneEditConfigStrategy();
  73             default:
  74                 throw new UnsupportedOperationException("Unimplemented edit config strategy" + this);
  75         }
  76     }
  77 }