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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package org.openecomp.sdc.be.dao.neo4j;
import fj.data.Either;
import org.openecomp.sdc.be.dao.graph.datatype.*;
import org.openecomp.sdc.be.datatypes.enums.NodeTypeEnum;
import org.openecomp.sdc.common.log.wrappers.Logger;
import java.util.*;
public class Neo4jGraphBatchBuilder {
private static Logger logger = Logger.getLogger(Neo4jGraphBatchBuilder.class.getName());
public Either<BatchBuilder, Neo4jOperationStatus> buildBatchBuilderFromTable(
GraphNeighbourTable graphNeighbourTable) {
logger.debug("The table sent in order to build BatchBuilder is {}", graphNeighbourTable);
List<GraphNode> nodes = graphNeighbourTable.getNodes();
if (nodes != null && nodes.size() > 0) {
List<NodeRelation> directedEdges = graphNeighbourTable.getDirectedEdges();
List<RelationEndPoint> relationEndPoints = new ArrayList<>(nodes.size());
Set<Integer> nodesInRelations = findDistinctNodesIndex(directedEdges);
buildRelationEndPoints(nodes, nodesInRelations, relationEndPoints);
BatchBuilder batchBuilder = BatchBuilder.getBuilder();
for (GraphElement neo4jElement : nodes) {
if (neo4jElement.getAction() != ActionEnum.Delete) {
logger.debug("Goint to add node {} to batch builder.", neo4jElement);
batchBuilder.add(neo4jElement);
}
}
if (directedEdges != null) {
for (NodeRelation nodeRelation : directedEdges) {
GraphRelation relation = buildNeo4jRelation(relationEndPoints, nodeRelation);
logger.debug("Goint to add relation {} to batch builder.", relation);
batchBuilder.add(relation);
}
}
for (GraphElement neo4jElement : nodes) {
if (neo4jElement.getAction() == ActionEnum.Delete) {
logger.debug("Goint to add node {} to batch builder.", neo4jElement);
batchBuilder.add(neo4jElement);
}
}
return Either.left(batchBuilder);
} else {
logger.error("No node was sent in order to create the resource.");
return Either.right(Neo4jOperationStatus.BAD_REQUEST);
}
}
private Pair<String, String> getUniqueIdKeyValue(GraphNode neo4jNode) {
// String label = neo4jNode.getLabel();
// NodeTypeEnum nodeTypeEnum = NodeTypeEnum.getByName(label);
//
return Pair.createPair(neo4jNode.getUniqueIdKey(), neo4jNode.getUniqueId().toString());
}
private Set<Integer> findDistinctNodesIndex(List<NodeRelation> directedEdges) {
HashSet<Integer> nodesIndex = new HashSet<>();
if (directedEdges != null) {
for (NodeRelation nodeRelation : directedEdges) {
nodesIndex.add(nodeRelation.getFromIndex());
nodesIndex.add(nodeRelation.getToIndex());
}
}
return nodesIndex;
}
private String findResourceDataIdFromNodes(List<GraphNode> nodes) {
if (nodes != null) {
for (GraphNode neo4jNode : nodes) {
String label = neo4jNode.getLabel();
if (label.equals(NodeTypeEnum.Resource.getName())) {
return neo4jNode.getUniqueId().toString();
}
}
}
return null;
}
private GraphRelation buildNeo4jRelation(List<RelationEndPoint> relationEndPoints, NodeRelation nodeRelation) {
GraphRelation relation = new GraphRelation();
int fromIndex = nodeRelation.getFromIndex();
int toIndex = nodeRelation.getToIndex();
Neo4jEdge neo4jEdge = nodeRelation.getEdge();
relation.setFrom(relationEndPoints.get(fromIndex));
relation.setTo(relationEndPoints.get(toIndex));
relation.setType(neo4jEdge.getEdgeType().getProperty());
// TODO: fix it after change
Map<String, Object> edgeProps = neo4jEdge.getProperties();
if (edgeProps != null && !edgeProps.isEmpty()) {
relation.addPropertis(edgeProps);
}
relation.setAction(neo4jEdge.getAction());
return relation;
}
private void buildRelationEndPoints(List<GraphNode> nodes, Set<Integer> nodesInRelations,
List<RelationEndPoint> relationEndPoints) {
if (nodesInRelations != null) {
for (Integer nodeIndex : nodesInRelations) {
GraphElement neo4jElement = nodes.get(nodeIndex);
GraphNode neo4jNode = (GraphNode) neo4jElement;
String label = neo4jNode.getLabel();
Pair<String, String> uniqueKeyValue = getUniqueIdKeyValue(neo4jNode);
RelationEndPoint endPoint = new RelationEndPoint(NodeTypeEnum.getByName(label), uniqueKeyValue.getKey(),
uniqueKeyValue.getValue());
relationEndPoints.add(nodeIndex, endPoint);
}
}
}
public static class Pair<K, V> {
private final K key;
private final V value;
public static <K, V> Pair<K, V> createPair(K key, V value) {
return new Pair<>(key, value);
}
public Pair(K key, V value) {
this.key = key;
this.value = value;
}
public K getKey() {
return key;
}
public V getValue() {
return value;
}
}
}
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