bf11f2a13770b3403f56563e64080ab49ff79980
[controller.git] / 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(String.format("With " + defaultStrategy
50                         + " as default-operation operations on module elements are not permitted"
51                         + "since the default option is restrictive"),
52                         DocumentedException.ErrorType.APPLICATION, 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 }

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