2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2019 Nordix Foundation.
4 * Modifications Copyright (C) 2021 AT&T Intellectual Property. All rights reserved.
5 * ================================================================================
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
18 * SPDX-License-Identifier: Apache-2.0
19 * ============LICENSE_END=========================================================
22 package org.onap.policy.models.base;
24 import lombok.AccessLevel;
25 import lombok.NoArgsConstructor;
26 import lombok.NonNull;
29 * The key uniquely identifies every entity in the system. This class is an abstract class to give a common parent for
30 * all key types in the system.
32 @NoArgsConstructor(access = AccessLevel.PROTECTED)
33 public abstract class PfKey extends PfConcept {
34 private static final long serialVersionUID = 6281159885962014041L;
36 /** Regular expression to specify the structure of key names. */
37 public static final String NAME_REGEXP = "^[A-Za-z0-9\\-_\\.]+$";
39 /** Regular expression to specify the structure of key versions. */
40 public static final String VERSION_REGEXP = "^(\\d+.){2}\\d+$";
42 /** Regular expression to specify the structure of key IDs. */
43 public static final String KEY_ID_REGEXP = "^[A-Za-z0-9\\-_\\.]+:(\\d+.){2}\\d+$";
45 /** Specifies the value for names in NULL keys. */
46 public static final String NULL_KEY_NAME = "NULL";
48 /** Specifies the value for versions in NULL keys. */
49 public static final String NULL_KEY_VERSION = "0.0.0";
52 * This enumeration is returned on key compatibility checks.
54 public enum Compatibility {
55 /** The keys have different names. */
58 * The name of the key matches but the Major version number of the keys is different (x in x.y.z do not match).
62 * The name of the key matches but the Minor version number of the keys is different (y in x.y.z do not match).
66 * The name of the key matches but the Patch version number of the keys is different (z in x.y.z do not match).
69 /** The keys match completely. */
76 * @param copyConcept the concept to copy from
78 protected PfKey(final PfKey copyConcept) {
83 public abstract String getId();
86 * Return the result of a compatibility check of two keys.
88 * @param otherKey the key to check compatibility against
89 * @return the compatibility result of the check
91 public abstract Compatibility getCompatibility(@NonNull PfKey otherKey);
94 * Check if two keys are compatible, that is the keys are IDENTICAL or have only MINOR, PATCH differences.
96 * @param otherKey the key to check compatibility against
97 * @return true, if the keys are compatible
99 public abstract boolean isCompatible(@NonNull PfKey otherKey);
102 * Check if this key is a newer version than the other key.
104 * @param otherKey the key to check against
105 * @return true, if this key is newer than the other key
107 public abstract boolean isNewerThan(@NonNull PfKey otherKey);
110 * Check if a key equals its null key.
112 * @return true, if the key is a null key
114 public abstract boolean isNullKey();
117 * Get the major version of a key.
119 * @return the major version of a key
121 public abstract int getMajorVersion();
124 * Get the minor version of a key.
126 * @return the minor version of a key
128 public abstract int getMinorVersion();
131 * Get the patch version of a key.
133 * @return the patch version of a key
135 public abstract int getPatchVersion();