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

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * org.openecomp.aai
   4  * ================================================================================
   5  * Copyright (C) 2017 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
  21 package org.openecomp.aai.introspection.sideeffect;
  22
  23 import org.apache.tinkerpop.gremlin.structure.Vertex;
  24 import org.openecomp.aai.db.props.AAIProperties;
  25 import org.openecomp.aai.exceptions.AAIException;
  26 import org.openecomp.aai.introspection.Introspector;
  27 import org.openecomp.aai.introspection.sideeffect.exceptions.AAIMultiplePropertiesException;
  28 import org.openecomp.aai.parsers.query.QueryParser;
  29 import org.openecomp.aai.parsers.uri.URIToObject;
  30 import org.openecomp.aai.restcore.util.URITools;
  31 import org.openecomp.aai.schema.enums.PropertyMetadata;
  32 import org.openecomp.aai.serialization.db.DBSerializer;
  33 import org.openecomp.aai.serialization.engines.TransactionalGraphEngine;
  34
  35 import javax.ws.rs.core.MultivaluedMap;
  36 import java.io.UnsupportedEncodingException;
  37 import java.net.URI;
  38 import java.net.URISyntaxException;
  39 import java.util.List;
  40 import java.util.Map.Entry;
  41 import java.util.Optional;
  42
  43 public class DataLinkWriter extends SideEffect {
  44
  45         public DataLinkWriter(Introspector obj, Vertex self, TransactionalGraphEngine dbEngine, DBSerializer serializer) {
  46                 super(obj, self, dbEngine, serializer);
  47         }
  48
  49         @Override
  50         protected PropertyMetadata getPropertyMetadata() {
  51                 return PropertyMetadata.DATA_LINK;
  52         }
  53
  54         @Override
  55         protected void processURI(Optional<String> completeUri, Entry<String, String> entry)
  56                         throws URISyntaxException, UnsupportedEncodingException, AAIException {
  57                 if (completeUri.isPresent()) {
  58                         URI uri = new URI(completeUri.get());
  59                         MultivaluedMap<String, String> map = URITools.getQueryMap(uri);
  60                         QueryParser uriQuery = dbEngine.getQueryBuilder(this.latestLoader).createQueryFromURI(uri, map);
  61                         List<Vertex> results = uriQuery.getQueryBuilder().toList();
  62                         if (results.size() == 1) {
  63                                 if (results.get(0).<Boolean>property(AAIProperties.LINKED).orElse(false) && obj.getValue(entry.getKey()) == null) {
  64                                         //delete vertex because property was removed
  65                                         serializer.delete(results.get(0), "", false);
  66                                 } else {
  67                                         //link vertex that already exists
  68                                         this.addLinkedProperty(results.get(0));
  69                                 }
  70                         } else {
  71                                 if (results.isEmpty()) {
  72                                         //locate previously linked vertex
  73                                         List<Vertex> linkedVertices = uriQuery.getQueryBuilder().getContainerQuery().getVerticesByProperty(AAIProperties.LINKED, true).toList();
  74                                         if (!linkedVertices.isEmpty()) {
  75                                                 if (linkedVertices.size() > 1) {
  76                                                         throw new AAIMultiplePropertiesException("multiple vertices found for single cardinality propery found when searching " + uri);
  77                                                 } else {
  78                                                         //found one, remove the linked property because it didn't match the uri
  79                                                         linkedVertices.get(0).property(AAIProperties.LINKED).remove();
  80                                                 }
  81                                         }
  82                                         if (obj.getValue(entry.getKey()) != null) {
  83                                                 //add new vertex to database if we have values
  84                                                 URIToObject parser = new URIToObject(this.latestLoader, uri);
  85                                                 Introspector resultObj = parser.getEntity();
  86                                                 Vertex newV = serializer.createNewVertex(resultObj);
  87                                                 serializer.serializeToDb(resultObj, newV, uriQuery, completeUri.get(), this.latestLoader.getVersion().toString());
  88                                                 this.addLinkedProperty(newV);
  89                                         }
  90                                 } else if (results.size() > 1) {
  91                                         throw new AAIMultiplePropertiesException("multiple values of " + entry.getKey() + " found when searching " + uri);
  92                                 }
  93                         }
  94                 } else {
  95                         //skip processing because no required properties were specified
  96                 }
  97         }
  98
  99         @Override
 100         protected boolean replaceWithWildcard() {
 101                 return true;
 102         }
 103
 104         private void addLinkedProperty(Vertex v) {
 105                 v.property(AAIProperties.LINKED, true);
 106         }
 107
 108
 109 }