2 * ============LICENSE_START=======================================================
3 * DCAEGEN2-SERVICES-SDK
4 * ================================================================================
5 * Copyright (C) 2020 Nokia. 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.
18 * ============LICENSE_END=========================================================
21 package org.onap.dcaegen2.services.sdk.services.external.schema.manager.service;
23 import org.onap.dcaegen2.services.sdk.services.external.schema.manager.model.SchemaReference;
26 public class SchemaReferenceResolver {
28 private static final String ROOT_REFERENCE = "/";
29 private static final int URL_INDEX = 0;
30 private static final int INTERNAL_REFERENCE_INDEX = 1;
31 private static final int REFERENCE_FRAGMENTS_CONTAINING_INTERNAL_REF_SIZE = 2;
33 private final String schemaReference;
35 public SchemaReferenceResolver(String schemaReference) {
36 this.schemaReference = schemaReference;
40 * Extracts the schema reference fragment, provided in the event, corresponding to the url path (before #).
44 public String resolveUrl() {
45 String[] referenceFragments = schemaReference.split(SchemaReference.URL_SEPARATOR);
46 return referenceFragments[URL_INDEX];
50 * Returns internal reference (after #) if it is present in schema reference and add "/" on the beginning if it's
51 * not present, otherwise returns "/".
53 * @return resolved internal reference
55 public String resolveInternalReference() {
57 String[] referenceFragments = schemaReference.split(SchemaReference.URL_SEPARATOR);
58 if (internalReferenceExists(referenceFragments)) {
59 String internalReference = referenceFragments[INTERNAL_REFERENCE_INDEX];
60 reference = prepareExistingInternalReference(internalReference);
62 reference = ROOT_REFERENCE;
68 private boolean internalReferenceExists(String[] referenceFragments) {
69 return referenceFragments.length == REFERENCE_FRAGMENTS_CONTAINING_INTERNAL_REF_SIZE;
72 private String prepareExistingInternalReference(String internalReference) {
73 return (!isAbsolute(internalReference)) ? ROOT_REFERENCE + internalReference : internalReference;
76 private boolean isAbsolute(String internalReference) {
77 return internalReference.startsWith(ROOT_REFERENCE);