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.Column;
26 import javax.persistence.Convert;
27 import javax.persistence.EmbeddedId;
28 import javax.persistence.Entity;
29 import javax.persistence.Table;
30 import javax.xml.bind.annotation.XmlAccessType;
31 import javax.xml.bind.annotation.XmlAccessorType;
32 import javax.xml.bind.annotation.XmlElement;
33 import javax.xml.bind.annotation.XmlRootElement;
34 import javax.xml.bind.annotation.XmlType;
35 import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
36 import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
37 import org.onap.policy.apex.model.basicmodel.concepts.AxConcept;
38 import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
39 import org.onap.policy.apex.model.basicmodel.concepts.AxValidationMessage;
40 import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult;
41 import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult.ValidationResult;
42 import org.onap.policy.apex.model.basicmodel.dao.converters.CDataConditioner;
43 import org.onap.policy.common.utils.validation.Assertions;
46 * This class holds a data schema definition in Apex. A data schema describes the structure of a single atom of data
47 * handled by Apex. This atom of data can be a primitive type such as an integer or a string, or it can be a more
48 * complex data type such as a Java object or an object described using a data definition language such as Avro. The
49 * schema flavour defines the type of schema being defined and the schema itself defines the schema. The schema flavour
50 * is used by Apex to look up and load a plugin class that understands and interprets the schema definition and can
51 * create instances of classes for the schema.
53 * <p>An {@link AxContextSchema} is used to define each parameter in Apex events, the messages that enter, exit, and are
54 * passed internally in Apex. In addition, an Apex {@link AxContextAlbum} instances hold a map of
55 * {@link AxContextSchema} instances to represent the context being managed as an {@link AxContextAlbum}. For example,
56 * the state of all cells in a mobile network might be represented as an {@link AxContextAlbum} with its
57 * {@link AxContextSchema} being defined as @code cell} objects.
59 * <p>Validation checks that the schema key is not null. It also checks that the schema flavour is defined and matches
60 * the regular expression SCHEMA_FLAVOUR_REGEXP. Finally, validation checks that the defined schema is not a blank or
64 @Table(name = "AxContextSchema")
66 @XmlAccessorType(XmlAccessType.FIELD)
67 @XmlRootElement(name = "apexContextSchema", namespace = "http://www.onap.org/policy/apex-pdp")
68 @XmlType(name = "AxContextSchema", namespace = "http://www.onap.org/policy/apex-pdp", propOrder =
69 { "key", "schemaFlavour", "schemaDefinition" })
71 public class AxContextSchema extends AxConcept {
72 private static final String SCHEMA_FLAVOUR = "schemaFlavour";
73 private static final String WHITESPACE_REGEXP = "\\s+$";
75 private static final long serialVersionUID = -6443016863162692288L;
77 /** Regular expression that constrains what values a schema flavour can have. */
78 public static final String SCHEMA_FLAVOUR_REGEXP = "[A-Za-z0-9\\-_]+";
80 /** An undefined schema flavour has this value. */
81 public static final String SCHEMA_FLAVOUR_UNDEFINED = "UNDEFINED";
83 /** The maximum permissible size of a schema definition. */
84 public static final int MAX_SCHEMA_SIZE = 32672; // The maximum size supported by Apache Derby
87 @XmlElement(name = "key", required = true)
88 private AxArtifactKey key;
90 @Column(name = SCHEMA_FLAVOUR)
91 @XmlElement(required = true)
92 private String schemaFlavour;
94 @Column(name = "schemaDefinition", length = MAX_SCHEMA_SIZE)
95 @Convert(converter = CDataConditioner.class)
96 @XmlJavaTypeAdapter(value = CDataConditioner.class)
97 @XmlElement(name = "schemaDefinition", required = true)
98 private String schemaDefinition;
101 * The default constructor creates a context schema with a null artifact key. The flavour of the context album is
102 * set as SCHEMA_FLAVOUR_UNDEFINED and the schema itself is defined as an empty string.
104 public AxContextSchema() {
105 this(new AxArtifactKey());
106 schemaFlavour = SCHEMA_FLAVOUR_UNDEFINED;
112 * @param copyConcept the concept to copy from
114 public AxContextSchema(final AxContextSchema copyConcept) {
119 * The key constructor creates a context schema with the given artifact key. The flavour of the context album is set
120 * as SCHEMA_FLAVOUR_UNDEFINED and the schema itself is defined as an empty string.
124 public AxContextSchema(final AxArtifactKey key) {
125 this(key, SCHEMA_FLAVOUR_UNDEFINED, "");
129 * This Constructor creates a context schema with all of its fields defined.
132 * @param schemaFlavour the schema flavour
133 * @param schemaDefinition the schema definition
135 public AxContextSchema(final AxArtifactKey key, final String schemaFlavour, final String schemaDefinition) {
137 Assertions.argumentNotNull(key, "key may not be null");
138 Assertions.argumentNotNull(schemaFlavour, "schemaFlavour may not be null");
139 Assertions.argumentNotNull(schemaDefinition, "schemaDefinition may not be null");
142 this.schemaFlavour = Assertions.validateStringParameter(SCHEMA_FLAVOUR, schemaFlavour, SCHEMA_FLAVOUR_REGEXP);
143 this.schemaDefinition = schemaDefinition.replaceAll(WHITESPACE_REGEXP, "");
150 public AxArtifactKey getKey() {
158 public List<AxKey> getKeys() {
159 return key.getKeys();
163 * Sets the key of the context schema.
165 * @param key the key of the context schema
167 public void setKey(final AxArtifactKey key) {
168 Assertions.argumentNotNull(key, "key may not be null");
173 * Gets the schema flavour, which defines the schema definition type being used.
175 * @return the schema flavour
177 public String getSchemaFlavour() {
178 return schemaFlavour;
182 * Sets the schema flavour, which defines the type of schema definition being used.
184 * @param schemaFlavour the schema flavour
186 public void setSchemaFlavour(final String schemaFlavour) {
187 this.schemaFlavour = Assertions.validateStringParameter(SCHEMA_FLAVOUR, schemaFlavour, SCHEMA_FLAVOUR_REGEXP);
191 * Gets the schema, which defines the structure of this data schema atom.
193 * @return the schema definition
195 public String getSchema() {
196 return schemaDefinition;
200 * Sets the schema, which defines the structure of this data schema atom.
202 * @param schema the schema definition
204 public void setSchema(final String schema) {
205 Assertions.argumentNotNull(schema, "schema may not be null");
206 this.schemaDefinition = schema.replaceAll(WHITESPACE_REGEXP, "");
213 public AxValidationResult validate(final AxValidationResult resultIn) {
214 AxValidationResult result = resultIn;
216 if (key.equals(AxArtifactKey.getNullKey())) {
217 result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
218 "key is a null key"));
221 result = key.validate(result);
223 if (schemaFlavour.replaceAll(WHITESPACE_REGEXP, "").length() == 0
224 || schemaFlavour.equals(SCHEMA_FLAVOUR_UNDEFINED)) {
225 result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
226 "schema flavour is not defined"));
229 String flavourValidationResult = Assertions.getStringParameterValidationMessage(SCHEMA_FLAVOUR, schemaFlavour,
230 SCHEMA_FLAVOUR_REGEXP);
231 if (flavourValidationResult != null) {
232 result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
233 "schema flavour invalid-" + flavourValidationResult));
236 if (schemaDefinition.replaceAll(WHITESPACE_REGEXP, "").length() == 0) {
237 result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
238 "no schemaDefinition specified, schemaDefinition may not be blank"));
248 public void clean() {
250 schemaFlavour = Assertions.validateStringParameter(SCHEMA_FLAVOUR, schemaFlavour, SCHEMA_FLAVOUR_REGEXP);
251 schemaDefinition = schemaDefinition.replaceAll(WHITESPACE_REGEXP, "");
258 public String toString() {
259 final StringBuilder builder = new StringBuilder();
260 builder.append(this.getClass().getSimpleName());
261 builder.append(":(");
262 builder.append("key=");
264 builder.append(",schemaFlavour=");
265 builder.append(schemaFlavour);
266 builder.append(",schemaDefinition=");
267 builder.append(schemaDefinition);
269 return builder.toString();
276 public AxConcept copyTo(final AxConcept target) {
277 Assertions.argumentNotNull(target, "target may not be null");
279 final Object copyObject = target;
280 Assertions.instanceOf(copyObject, AxContextSchema.class);
282 final AxContextSchema copy = ((AxContextSchema) copyObject);
283 copy.setKey(new AxArtifactKey(key));
284 copy.setSchemaFlavour(schemaFlavour);
285 copy.setSchema(schemaDefinition);
294 public int hashCode() {
295 final int prime = 31;
297 result = prime * result + key.hashCode();
298 result = prime * result + schemaFlavour.hashCode();
299 result = prime * result + schemaDefinition.hashCode();
307 public boolean equals(final Object obj) {
315 if (getClass() != obj.getClass()) {
319 final AxContextSchema other = (AxContextSchema) obj;
321 if (!key.equals(other.key)) {
324 if (!schemaFlavour.equals(other.schemaFlavour)) {
327 final String thisSchema = CDataConditioner.clean(schemaDefinition).replaceAll("\n", "");
328 final String otherSchema = CDataConditioner.clean(other.schemaDefinition).replaceAll("\n", "");
329 return thisSchema.equals(otherSchema);
336 public int compareTo(final AxConcept otherObj) {
337 if (otherObj == null) {
340 if (this == otherObj) {
343 if (getClass() != otherObj.getClass()) {
344 return this.hashCode() - otherObj.hashCode();
347 final AxContextSchema other = (AxContextSchema) otherObj;
348 if (!key.equals(other.key)) {
349 return key.compareTo(other.key);
351 if (!schemaFlavour.equals(other.schemaFlavour)) {
352 return schemaFlavour.compareTo(other.schemaFlavour);
354 final String thisSchema = CDataConditioner.clean(schemaDefinition).replaceAll("\n", "");
355 final String otherSchema = CDataConditioner.clean(other.schemaDefinition).replaceAll("\n", "");
356 return thisSchema.compareTo(otherSchema);