2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2016-2018 Ericsson. All rights reserved.
4 * Modifications Copyright (C) 2019 Nordix Foundation.
5 * Modifications Copyright (C) 2021 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
19 * SPDX-License-Identifier: Apache-2.0
20 * ============LICENSE_END=========================================================
23 package org.onap.policy.apex.model.contextmodel.concepts;
25 import java.util.List;
26 import javax.persistence.AttributeOverride;
27 import javax.persistence.Column;
28 import javax.persistence.Embedded;
29 import javax.persistence.EmbeddedId;
30 import javax.persistence.Entity;
31 import javax.persistence.Table;
32 import javax.xml.bind.annotation.XmlAccessType;
33 import javax.xml.bind.annotation.XmlAccessorType;
34 import javax.xml.bind.annotation.XmlElement;
35 import javax.xml.bind.annotation.XmlRootElement;
36 import javax.xml.bind.annotation.XmlType;
37 import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
38 import org.onap.policy.apex.model.basicmodel.concepts.AxConcept;
39 import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
40 import org.onap.policy.apex.model.basicmodel.concepts.AxKeyUse;
41 import org.onap.policy.apex.model.basicmodel.concepts.AxValidationMessage;
42 import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult;
43 import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult.ValidationResult;
44 import org.onap.policy.common.utils.validation.Assertions;
47 * This class is used to define an album of context.
49 * <p>A context album is a distributed map of context that will be distributed across all process instances that require
50 * access to it. This class defines the schema (structure) of the items in the context album, whether the items on the
51 * context album are writable or not, and what the scope of the context album is.
53 * <p>The structure of items (objects) the context album is defined as a schema, which is understood by whatever schema
54 * implementation is being used for the context album.
56 * <p>The scope of a context album is a string field, understood by whatever distribution mechanism is being used for
57 * the context album. The distribution mechanism uses the scope of the context album to decide to which executable
58 * entities a given context album is distributed.
60 * <p>The writable flag on a context album defines whether users of a context album can write to the context album or
61 * just read objects from the context album.
63 * <p>Validation checks that the album key and the context schema key are not null and that the scope field is not
64 * undefined and matches the regular expression SCOPE_REGEXP.
67 @Table(name = "AxContextAlbum")
69 @XmlAccessorType(XmlAccessType.FIELD)
70 @XmlRootElement(name = "apexContextAlbum", namespace = "http://www.onap.org/policy/apex-pdp")
71 @XmlType(name = "AxContextAlbum", namespace = "http://www.onap.org/policy/apex-pdp", propOrder =
72 { "key", "scope", "isWritable", "itemSchema" })
74 public class AxContextAlbum extends AxConcept {
75 private static final String SCOPE_STRING = "scope";
77 private static final long serialVersionUID = 4290442590545820316L;
80 * The legal values for the scope of a context album is constrained by this regular expression.
82 public static final String SCOPE_REGEXP = "[A-Za-z0-9\\-_]+";
84 /** The value of scope for a context album for which a scope has not been specified. */
85 public static final String SCOPE_UNDEFINED = "UNDEFINED";
87 private static final int HASH_PRIME_0 = 1231;
88 private static final int HASH_PRIME_1 = 1237;
91 @XmlElement(name = "key", required = true)
92 private AxArtifactKey key;
94 @Column(name = SCOPE_STRING)
95 @XmlElement(name = SCOPE_STRING, required = true)
98 @Column(name = "isWritable")
99 @XmlElement(name = "isWritable", required = true)
100 private boolean isWritable;
104 @AttributeOverride(name = "name", column = @Column(name = "itemSchemaName"))
105 @AttributeOverride(name = "version", column = @Column(name = "itemSchemaVersion"))
106 @Column(name = "itemSchema")
107 @XmlElement(name = "itemSchema", required = true)
108 private AxArtifactKey itemSchema;
112 * The default constructor creates a context album with a null artifact key. The scope of the context album is set
113 * as SCOPE_UNDEFINED, the album is writable, and the artifact key of the context schema is set to the null artifact
116 public AxContextAlbum() {
117 this(new AxArtifactKey());
118 scope = SCOPE_UNDEFINED;
120 itemSchema = AxArtifactKey.getNullKey();
126 * @param copyConcept the concept to copy from
128 public AxContextAlbum(final AxContextAlbum copyConcept) {
133 * The keyed constructor creates a context album with the specified artifact key. The scope of the context album is
134 * set as SCOPE_UNDEFINED, the album is writable, and the artifact key of the context schema is set to the null
137 * @param key the key of the context album
139 public AxContextAlbum(final AxArtifactKey key) {
140 this(key, SCOPE_UNDEFINED, true, AxArtifactKey.getNullKey());
144 * Constructor that sets all the fields of the context album.
146 * @param key the key of the context album
147 * @param scope the scope field, must match the regular expression SCOPE_REGEXP
148 * @param isWritable specifies whether the context album will be writable or not
149 * @param itemSchema the artifact key of the context schema to use for this context album
151 public AxContextAlbum(final AxArtifactKey key, final String scope, final boolean isWritable,
152 final AxArtifactKey itemSchema) {
154 Assertions.argumentNotNull(key, "key may not be null");
155 Assertions.argumentNotNull(scope, "scope may not be null");
156 Assertions.argumentNotNull(itemSchema, "itemSchema may not be null");
159 this.scope = Assertions.validateStringParameter(SCOPE_STRING, scope, SCOPE_REGEXP);
160 this.isWritable = isWritable;
161 this.itemSchema = itemSchema;
168 public AxArtifactKey getKey() {
176 public List<AxKey> getKeys() {
177 final List<AxKey> keyList = key.getKeys();
178 keyList.add(new AxKeyUse(itemSchema.getKey()));
184 * Sets the key of the context album.
186 * @param key the context album key
188 public void setKey(final AxArtifactKey key) {
189 Assertions.argumentNotNull(key, "key may not be null");
194 * Gets the scope of the context album.
196 * @return the context album scope
198 public String getScope() {
203 * Sets the scope of the context album.
205 * @param scope the context album scope
207 public void setScope(final String scope) {
208 Assertions.argumentNotNull(scope, "scope may not be null");
209 this.scope = Assertions.validateStringParameter(SCOPE_STRING, scope, SCOPE_REGEXP);
213 * Sets whether the album is writable or not.
215 * @param writable the writable flag value
217 public void setWritable(final boolean writable) {
218 this.isWritable = writable;
222 * Checks if the album is writable.
224 * @return true, if the album is writable
226 public boolean isWritable() {
231 * Gets the artifact key of the item schema of this context album.
233 * @return the item schema key
235 public AxArtifactKey getItemSchema() {
240 * Sets the artifact key of the item schema of this context album.
242 * @param itemSchema the item schema key
244 public void setItemSchema(final AxArtifactKey itemSchema) {
245 Assertions.argumentNotNull(itemSchema, "itemSchema key may not be null");
246 this.itemSchema = itemSchema;
253 public AxValidationResult validate(final AxValidationResult resultIn) {
254 AxValidationResult result = resultIn;
256 if (key.equals(AxArtifactKey.getNullKey())) {
257 result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
258 "key is a null key"));
260 result = key.validate(result);
262 if (scope.replaceAll("\\s+$", "").length() == 0 || scope.equals(SCOPE_UNDEFINED)) {
263 result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
264 "scope is not defined"));
267 String stringCheckResult = Assertions.getStringParameterValidationMessage(SCOPE_STRING, scope, SCOPE_REGEXP);
268 if (stringCheckResult != null) {
269 result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
270 "scope invalid-" + stringCheckResult));
273 if (itemSchema.equals(AxArtifactKey.getNullKey())) {
274 result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
275 "itemSchema reference is a null key, an item schema must be specified"));
277 result = itemSchema.validate(result);
286 public void clean() {
288 scope = Assertions.validateStringParameter(SCOPE_STRING, scope, SCOPE_REGEXP);
296 public String toString() {
297 final StringBuilder builder = new StringBuilder();
298 builder.append(this.getClass().getSimpleName());
299 builder.append(":(");
300 builder.append("key=");
302 builder.append(",scope=");
303 builder.append(scope);
304 builder.append(",isWritable=");
305 builder.append(isWritable);
306 builder.append(",itemSchema=");
307 builder.append(itemSchema);
309 return builder.toString();
316 public AxConcept copyTo(final AxConcept target) {
317 Assertions.argumentNotNull(target, "targetObject may not be null");
319 final Object copyObject = target;
320 Assertions.instanceOf(copyObject, AxContextAlbum.class);
322 final AxContextAlbum copy = ((AxContextAlbum) copyObject);
323 copy.setKey(new AxArtifactKey(key));
324 copy.setScope(scope);
325 copy.setWritable(isWritable);
326 copy.setItemSchema(new AxArtifactKey(itemSchema));
335 public int hashCode() {
336 final int prime = 31;
338 result = prime * result + key.hashCode();
339 result = prime * result + scope.hashCode();
340 result = prime * result + (isWritable ? HASH_PRIME_0 : HASH_PRIME_1);
341 result = prime * result + itemSchema.hashCode();
349 public boolean equals(final Object obj) {
357 if (getClass() != obj.getClass()) {
361 final AxContextAlbum other = (AxContextAlbum) obj;
362 if (!key.equals(other.key)) {
365 if (!scope.equals(other.scope)) {
368 if (isWritable != other.isWritable) {
371 return itemSchema.equals(other.itemSchema);
378 public int compareTo(final AxConcept otherObj) {
379 if (otherObj == null) {
382 if (this == otherObj) {
385 if (getClass() != otherObj.getClass()) {
386 return this.hashCode() - otherObj.hashCode();
389 final AxContextAlbum other = (AxContextAlbum) otherObj;
390 if (!key.equals(other.key)) {
391 return key.compareTo(other.key);
393 if (!scope.equals(other.scope)) {
394 return scope.compareTo(other.scope);
396 if (isWritable != other.isWritable) {
397 return (isWritable ? 1 : -1);
399 return itemSchema.compareTo(other.itemSchema);