2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2016-2018 Ericsson. All rights reserved.
4 * Modifications Copyright (C) 2019 Nordix Foundation.
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.apex.model.contextmodel.concepts;
24 import java.util.List;
25 import javax.persistence.AttributeOverride;
26 import javax.persistence.AttributeOverrides;
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 @AttributeOverrides({
105 @AttributeOverride(name = "name", column = @Column(name = "itemSchemaName")),
106 @AttributeOverride(name = "version", column = @Column(name = "itemSchemaVersion"))
108 @Column(name = "itemSchema")
109 @XmlElement(name = "itemSchema", required = true)
110 private AxArtifactKey itemSchema;
114 * The default constructor creates a context album with a null artifact key. The scope of the context album is set
115 * as SCOPE_UNDEFINED, the album is writable, and the artifact key of the context schema is set to the null artifact
118 public AxContextAlbum() {
119 this(new AxArtifactKey());
120 scope = SCOPE_UNDEFINED;
122 itemSchema = AxArtifactKey.getNullKey();
128 * @param copyConcept the concept to copy from
130 public AxContextAlbum(final AxContextAlbum copyConcept) {
135 * The keyed constructor creates a context album with the specified artifact key. The scope of the context album is
136 * set as SCOPE_UNDEFINED, the album is writable, and the artifact key of the context schema is set to the null
139 * @param key the key of the context album
141 public AxContextAlbum(final AxArtifactKey key) {
142 this(key, SCOPE_UNDEFINED, true, AxArtifactKey.getNullKey());
146 * Constructor that sets all the fields of the context album.
148 * @param key the key of the context album
149 * @param scope the scope field, must match the regular expression SCOPE_REGEXP
150 * @param isWritable specifies whether the context album will be writable or not
151 * @param itemSchema the artifact key of the context schema to use for this context album
153 public AxContextAlbum(final AxArtifactKey key, final String scope, final boolean isWritable,
154 final AxArtifactKey itemSchema) {
156 Assertions.argumentNotNull(key, "key may not be null");
157 Assertions.argumentNotNull(scope, "scope may not be null");
158 Assertions.argumentNotNull(itemSchema, "itemSchema may not be null");
161 this.scope = Assertions.validateStringParameter(SCOPE_STRING, scope, SCOPE_REGEXP);
162 this.isWritable = isWritable;
163 this.itemSchema = itemSchema;
170 public AxArtifactKey getKey() {
178 public List<AxKey> getKeys() {
179 final List<AxKey> keyList = key.getKeys();
180 keyList.add(new AxKeyUse(itemSchema.getKey()));
186 * Sets the key of the context album.
188 * @param key the context album key
190 public void setKey(final AxArtifactKey key) {
191 Assertions.argumentNotNull(key, "key may not be null");
196 * Gets the scope of the context album.
198 * @return the context album scope
200 public String getScope() {
205 * Sets the scope of the context album.
207 * @param scope the context album scope
209 public void setScope(final String scope) {
210 Assertions.argumentNotNull(scope, "scope may not be null");
211 this.scope = Assertions.validateStringParameter(SCOPE_STRING, scope, SCOPE_REGEXP);
215 * Sets whether the album is writable or not.
217 * @param writable the writable flag value
219 public void setWritable(final boolean writable) {
220 this.isWritable = writable;
224 * Checks if the album is writable.
226 * @return true, if the album is writable
228 public boolean isWritable() {
233 * Gets the artifact key of the item schema of this context album.
235 * @return the item schema key
237 public AxArtifactKey getItemSchema() {
242 * Sets the artifact key of the item schema of this context album.
244 * @param itemSchema the item schema key
246 public void setItemSchema(final AxArtifactKey itemSchema) {
247 Assertions.argumentNotNull(itemSchema, "itemSchema key may not be null");
248 this.itemSchema = itemSchema;
255 public AxValidationResult validate(final AxValidationResult resultIn) {
256 AxValidationResult result = resultIn;
258 if (key.equals(AxArtifactKey.getNullKey())) {
259 result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
260 "key is a null key"));
262 result = key.validate(result);
264 if (scope.replaceAll("\\s+$", "").length() == 0 || scope.equals(SCOPE_UNDEFINED)) {
265 result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
266 "scope is not defined"));
269 String stringCheckResult = Assertions.getStringParameterValidationMessage(SCOPE_STRING, scope, SCOPE_REGEXP);
270 if (stringCheckResult != null) {
271 result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
272 "scope invalid-" + stringCheckResult));
275 if (itemSchema.equals(AxArtifactKey.getNullKey())) {
276 result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
277 "itemSchema reference is a null key, an item schema must be specified"));
279 result = itemSchema.validate(result);
288 public void clean() {
290 scope = Assertions.validateStringParameter(SCOPE_STRING, scope, SCOPE_REGEXP);
298 public String toString() {
299 final StringBuilder builder = new StringBuilder();
300 builder.append(this.getClass().getSimpleName());
301 builder.append(":(");
302 builder.append("key=");
304 builder.append(",scope=");
305 builder.append(scope);
306 builder.append(",isWritable=");
307 builder.append(isWritable);
308 builder.append(",itemSchema=");
309 builder.append(itemSchema);
311 return builder.toString();
318 public AxConcept copyTo(final AxConcept target) {
319 Assertions.argumentNotNull(target, "targetObject may not be null");
321 final Object copyObject = target;
322 Assertions.instanceOf(copyObject, AxContextAlbum.class);
324 final AxContextAlbum copy = ((AxContextAlbum) copyObject);
325 copy.setKey(new AxArtifactKey(key));
326 copy.setScope(scope);
327 copy.setWritable(isWritable);
328 copy.setItemSchema(new AxArtifactKey(itemSchema));
337 public int hashCode() {
338 final int prime = 31;
340 result = prime * result + key.hashCode();
341 result = prime * result + scope.hashCode();
342 result = prime * result + (isWritable ? HASH_PRIME_0 : HASH_PRIME_1);
343 result = prime * result + itemSchema.hashCode();
351 public boolean equals(final Object obj) {
359 if (getClass() != obj.getClass()) {
363 final AxContextAlbum other = (AxContextAlbum) obj;
364 if (!key.equals(other.key)) {
367 if (!scope.equals(other.scope)) {
370 if (isWritable != other.isWritable) {
373 return itemSchema.equals(other.itemSchema);
380 public int compareTo(final AxConcept otherObj) {
381 if (otherObj == null) {
384 if (this == otherObj) {
387 if (getClass() != otherObj.getClass()) {
388 return this.hashCode() - otherObj.hashCode();
391 final AxContextAlbum other = (AxContextAlbum) otherObj;
392 if (!key.equals(other.key)) {
393 return key.compareTo(other.key);
395 if (!scope.equals(other.scope)) {
396 return scope.compareTo(other.scope);
398 if (isWritable != other.isWritable) {
399 return (isWritable ? 1 : -1);
401 return itemSchema.compareTo(other.itemSchema);