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