aai-core/src/main/java/org/onap/aai/introspection/sideeffect/DataLinkWriter.java

   1 /**
   2  * ============LICENSE_START=======================================================
   3  * org.onap.aai
   4  * ================================================================================
   5  * Copyright © 2017-2018 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
  10  *
  11  *    http://www.apache.org/licenses/LICENSE-2.0
  12  *
  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=========================================================
  19  */
  20 package org.onap.aai.introspection.sideeffect;
  21
  22 import org.apache.tinkerpop.gremlin.structure.Vertex;
  23 import org.onap.aai.db.props.AAIProperties;
  24 import org.onap.aai.exceptions.AAIException;
  25 import org.onap.aai.introspection.Introspector;
  26 import org.onap.aai.introspection.sideeffect.exceptions.AAIMultiplePropertiesException;
  27 import org.onap.aai.parsers.query.QueryParser;
  28 import org.onap.aai.parsers.uri.URIToObject;
  29 import org.onap.aai.restcore.util.URITools;
  30 import org.onap.aai.schema.enums.PropertyMetadata;
  31 import org.onap.aai.serialization.db.DBSerializer;
  32 import org.onap.aai.serialization.engines.TransactionalGraphEngine;
  33
  34 import javax.ws.rs.core.MultivaluedMap;
  35 import java.io.UnsupportedEncodingException;
  36 import java.net.URI;
  37 import java.net.URISyntaxException;
  38 import java.util.List;
  39 import java.util.Map.Entry;
  40 import java.util.Optional;
  41
  42 public class DataLinkWriter extends SideEffect {
  43
  44         public DataLinkWriter(Introspector obj, Vertex self, TransactionalGraphEngine dbEngine, DBSerializer serializer) {
  45                 super(obj, self, dbEngine, serializer);
  46         }
  47
  48         @Override
  49         protected PropertyMetadata getPropertyMetadata() {
  50                 return PropertyMetadata.DATA_LINK;
  51         }
  52
  53         @Override
  54         protected void processURI(Optional<String> completeUri, Entry<String, String> entry)
  55                         throws URISyntaxException, UnsupportedEncodingException, AAIException {
  56                 if (completeUri.isPresent()) {
  57                         URI uri = new URI(completeUri.get());
  58                         MultivaluedMap<String, String> map = URITools.getQueryMap(uri);
  59                         QueryParser uriQuery = dbEngine.getQueryBuilder(this.latestLoader).createQueryFromURI(uri, map);
  60                         List<Vertex> results = uriQuery.getQueryBuilder().toList();
  61                         if (results.size() == 1) {
  62                                 if (results.get(0).<Boolean>property(AAIProperties.LINKED).orElse(false) && obj.getValue(entry.getKey()) == null) {
  63                                         //delete vertex because property was removed
  64                                         serializer.delete(results.get(0), "", false);
  65                                 } else {
  66                                         //link vertex that already exists
  67                                         this.addLinkedProperty(results.get(0));
  68                                 }
  69                         } else {
  70                                 if (results.isEmpty()) {
  71                                         //locate previously linked vertex
  72                                         List<Vertex> linkedVertices = uriQuery.getQueryBuilder().getContainerQuery().getVerticesByProperty(AAIProperties.LINKED, true).toList();
  73                                         if (!linkedVertices.isEmpty()) {
  74                                                 if (linkedVertices.size() > 1) {
  75                                                         throw new AAIMultiplePropertiesException("multiple vertices found for single cardinality propery found when searching " + uri);
  76                                                 } else {
  77                                                         //found one, remove the linked property because it didn't match the uri
  78                                                         linkedVertices.get(0).property(AAIProperties.LINKED).remove();
  79                                                 }
  80                                         }
  81                                         if (obj.getValue(entry.getKey()) != null) {
  82                                                 //add new vertex to database if we have values
  83                                                 URIToObject parser = new URIToObject(this.latestLoader, uri);
  84                                                 Introspector resultObj = parser.getEntity();
  85                                                 Vertex newV = serializer.createNewVertex(resultObj);
  86                                                 serializer.serializeToDb(resultObj, newV, uriQuery, completeUri.get(), this.latestLoader.getVersion().toString());
  87                                                 this.addLinkedProperty(newV);
  88                                         }
  89                                 } else if (results.size() > 1) {
  90                                         throw new AAIMultiplePropertiesException("multiple values of " + entry.getKey() + " found when searching " + uri);
  91                                 }
  92                         }
  93                 } else {
  94                         //skip processing because no required properties were specified
  95                 }
  96         }
  97
  98         @Override
  99         protected boolean replaceWithWildcard() {
 100                 return true;
 101         }
 102
 103         private void addLinkedProperty(Vertex v) {
 104                 v.property(AAIProperties.LINKED, true);
 105         }
 106
 107
 108 }