catalog-dao/src/main/java/org/openecomp/sdc/be/dao/api/BasicDao.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * SDC
   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.sdc.be.dao.api;
  22
  23 import java.util.ArrayList;
  24 import java.util.List;
  25 import java.util.Map;
  26 import java.util.Map.Entry;
  27
  28 import org.openecomp.sdc.be.dao.graph.datatype.GraphElement;
  29 import org.openecomp.sdc.be.dao.graph.datatype.GraphElementTypeEnum;
  30 import org.openecomp.sdc.be.dao.graph.datatype.GraphNode;
  31 import org.openecomp.sdc.be.dao.impl.Neo4jResourceDAO;
  32 import org.openecomp.sdc.be.dao.neo4j.BatchBuilder;
  33 import org.openecomp.sdc.be.dao.neo4j.GraphNeighbourTable;
  34 import org.openecomp.sdc.be.dao.neo4j.GraphPropertiesDictionary;
  35 import org.openecomp.sdc.be.dao.neo4j.Neo4jClient;
  36 import org.openecomp.sdc.be.dao.neo4j.Neo4jGraphBatchBuilder;
  37 import org.openecomp.sdc.be.dao.neo4j.Neo4jOperationStatus;
  38 import org.openecomp.sdc.be.dao.neo4j.filters.MatchFilter;
  39 import org.openecomp.sdc.be.datatypes.enums.NodeTypeEnum;
  40 import org.slf4j.Logger;
  41 import org.slf4j.LoggerFactory;
  42
  43 import fj.data.Either;
  44
  45 public abstract class BasicDao implements IBasicDAO {
  46
  47         Neo4jGraphBatchBuilder graphBatchBuilder = new Neo4jGraphBatchBuilder();
  48
  49         Neo4jClient neo4jClient;
  50
  51         private static Logger logger = LoggerFactory.getLogger(Neo4jResourceDAO.class.getName());
  52
  53         public <T extends GraphNode> Either<T, Neo4jOperationStatus> create(GraphNeighbourTable graphNeighbourTable,
  54                         Class<T> clazz, NodeTypeEnum nodeType) {
  55
  56                 if (graphNeighbourTable != null) {
  57
  58                         Either<BatchBuilder, Neo4jOperationStatus> bbResult = graphBatchBuilder
  59                                         .buildBatchBuilderFromTable(graphNeighbourTable);
  60
  61                         if (bbResult.isLeft()) {
  62
  63                                 BatchBuilder batchBuilder = bbResult.left().value();
  64                                 // Neo4jOperationStatus neo4jOperationStatus =
  65                                 // neo4jClient.execute(batchBuilder);
  66                                 Either<List<List<GraphElement>>, Neo4jOperationStatus> executeResult = neo4jClient
  67                                                 .execute(batchBuilder);
  68
  69                                 if (executeResult.isRight()) {
  70                                         return Either.right(executeResult.right().value());
  71                                 }
  72
  73                                 T result = null;
  74                                 List<List<GraphElement>> listOfResults = executeResult.left().value();
  75                                 if (listOfResults != null) {
  76                                         for (List<GraphElement> listOfElements : listOfResults) {
  77                                                 if (listOfElements != null && false == listOfElements.isEmpty()) {
  78                                                         for (GraphElement element : listOfElements) {
  79                                                                 logger.debug("element {} was returned after running batch operation {}",
  80                                                                                 element, batchBuilder);
  81                                                                 if (element instanceof GraphNode) {
  82                                                                         GraphNode neo4jNode = (GraphNode) element;
  83                                                                         if (NodeTypeEnum.getByName(neo4jNode.getLabel()) == nodeType) {
  84                                                                                 result = clazz.cast(neo4jNode);
  85                                                                         }
  86                                                                 }
  87                                                         }
  88                                                 }
  89                                         }
  90                                 }
  91
  92                                 return Either.left(result);
  93
  94                         } else {
  95                                 return Either.right(bbResult.right().value());
  96                         }
  97
  98                 } else {
  99                         logger.error("The table sent in order to create resource is empty.");
 100                         return Either.right(Neo4jOperationStatus.BAD_REQUEST);
 101                 }
 102
 103         }
 104
 105         @Override
 106         public <T extends GraphNode> Either<T, Neo4jOperationStatus> getNodeData(String uniqueid, Class<T> clazz,
 107                         NodeTypeEnum nodeTypeEnum) {
 108
 109                 MatchFilter filter = new MatchFilter();
 110                 filter.addToMatch(GraphPropertiesDictionary.UNIQUE_ID.getProperty(), uniqueid);
 111
 112                 return getNodeData(filter, clazz, nodeTypeEnum);
 113
 114         }
 115
 116         @Override
 117         public <T extends GraphNode> Either<T, Neo4jOperationStatus> getNodeData(String keyName, String uniqueid,
 118                         Class<T> clazz, NodeTypeEnum nodeTypeEnum) {
 119
 120                 MatchFilter filter = new MatchFilter();
 121                 filter.addToMatch(keyName, uniqueid);
 122
 123                 return getNodeData(filter, clazz, nodeTypeEnum);
 124
 125         }
 126
 127         private <T extends GraphNode> Either<T, Neo4jOperationStatus> getNodeData(MatchFilter filter, Class<T> clazz,
 128                         NodeTypeEnum nodeTypeEnum) {
 129
 130                 Either<List<GraphElement>, Neo4jOperationStatus> status = neo4jClient.getByFilter(GraphElementTypeEnum.Node,
 131                                 nodeTypeEnum.getName(), filter);
 132
 133                 if (status.isRight()) {
 134                         return Either.right(status.right().value());
 135                 } else {
 136                         List<GraphElement> value = status.left().value();
 137                         if (value == null || value.isEmpty()) {
 138                                 return Either.right(Neo4jOperationStatus.NOT_FOUND);
 139                         } else {
 140                                 return Either.left(clazz.cast(value.get(0)));
 141                         }
 142                 }
 143         }
 144
 145         @Override
 146         public <T extends GraphNode> Either<List<T>, Neo4jOperationStatus> getNodesData(
 147                         Map<String, Object> propertiesToMatch, Class<T> clazz, NodeTypeEnum nodeTypeEnum) {
 148
 149                 MatchFilter filter = new MatchFilter();
 150                 if (propertiesToMatch != null) {
 151                         for (Entry<String, Object> property : propertiesToMatch.entrySet()) {
 152                                 filter.addToMatch(property.getKey(), property.getValue());
 153                         }
 154                 }
 155
 156                 Either<List<GraphElement>, Neo4jOperationStatus> status = neo4jClient.getByFilter(GraphElementTypeEnum.Node,
 157                                 nodeTypeEnum.getName(), filter);
 158
 159                 if (status.isRight()) {
 160                         return Either.right(status.right().value());
 161                 } else {
 162                         List<GraphElement> value = status.left().value();
 163                         if (value == null || value.isEmpty()) {
 164                                 return Either.right(Neo4jOperationStatus.NOT_FOUND);
 165                         } else {
 166                                 List<T> list = new ArrayList<T>();
 167                                 for (GraphElement element : value) {
 168                                         list.add(clazz.cast(element));
 169                                 }
 170                                 return Either.left(list);
 171                         }
 172                 }
 173         }
 174
 175         public Neo4jClient getNeo4jClient() {
 176                 return neo4jClient;
 177         }
 178
 179         public void setNeo4jClient(Neo4jClient neo4jClient) {
 180                 this.neo4jClient = neo4jClient;
 181         }
 182
 183 }