Add verigraph code base

JIRA: PARSER-111

Change-Id: Ie76e14fabbb6c388ebc89d9a15dd3021b25fa892
Signed-off-by: serena.spinoso <serena.spinoso@polito.it>

1 files changed, 129 insertions, 0 deletions

diff --git a/verigraph/src/main/java/it/polito/escape/verify/service/GraphService.java b/verigraph/src/main/java/it/polito/escape/verify/service/GraphService.java
new file mode 100644
index 0000000..b34eb08
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/service/GraphService.java
@@ -0,0 +1,129 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.service;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import it.polito.escape.verify.database.DatabaseClass;
+import it.polito.escape.verify.exception.DataNotFoundException;
+import it.polito.escape.verify.exception.ForbiddenException;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Neighbour;
+import it.polito.escape.verify.model.Node;
+
+public class GraphService {
+
+	private Map<Long, Graph> graphs = DatabaseClass.getInstance().getGraphs();
+
+	public GraphService() {
+
+	}
+
+	public List<Graph> getAllGraphs() {
+		return new ArrayList<Graph>(graphs.values());
+	}
+
+	public Graph getGraph(long id) {
+		if (id <= 0) {
+			throw new ForbiddenException("Illegal graph id: " + id);
+		}
+		Graph graph = graphs.get(id);
+		if (graph == null) {
+			throw new DataNotFoundException("Graph with id " + id + " not found");
+		}
+		return graph;
+	}
+
+	public Graph updateGraph(Graph graph) {
+		if (graph.getId() <= 0) {
+			throw new ForbiddenException("Illegal graph id: " + graph.getId());
+		}
+		Graph localGraph = graphs.get(graph.getId());
+		if (localGraph == null) {
+			throw new DataNotFoundException("Graph with id " + graph.getId() + " not found");
+		}
+
+		validateGraph(graph);
+
+//		int numberOfNodes = 0;
+//		for (Node node : graph.getNodes().values()) {
+//
+//			node.setId(++numberOfNodes);
+//
+//			int numberOfNodeNeighbours = 0;
+//			for (Neighbour neighbour : node.getNeighbours().values()) {
+//				neighbour.setId(++numberOfNodeNeighbours);
+//			}
+//		}
+
+		for (Map.Entry<Long, Node> nodeEntry : graph.getNodes().entrySet()){
+			nodeEntry.getValue().setId(nodeEntry.getKey());
+
+			for (Map.Entry<Long, Neighbour> neighbourEntry : nodeEntry.getValue().getNeighbours().entrySet()){
+				neighbourEntry.getValue().setId(neighbourEntry.getKey());
+			}
+		}
+
+		synchronized(this){
+			graphs.put(graph.getId(), graph);
+			DatabaseClass.persistDatabase();
+			return graph;
+		}
+	}
+
+	public Graph removeGraph(long id) {
+		if (id <= 0) {
+			throw new ForbiddenException("Illegal graph id: " + id);
+		}
+		synchronized(this){
+			return graphs.remove(id);
+		}
+	}
+
+	public Graph addGraph(Graph graph) {
+		validateGraph(graph);
+
+		synchronized (this) {
+			graph.setId(DatabaseClass.getInstance().getNumberOfGraphs() + 1);
+		}
+//		int numberOfNodes = 0;
+//		for (Node node : graph.getNodes().values()) {
+//
+//			node.setId(++numberOfNodes);
+//
+//			int numberOfNodeNeighbours = 0;
+//			for (Neighbour neighbour : node.getNeighbours().values()) {
+//				neighbour.setId(++numberOfNodeNeighbours);
+//			}
+//		}
+
+		for (Map.Entry<Long, Node> nodeEntry : graph.getNodes().entrySet()){
+			nodeEntry.getValue().setId(nodeEntry.getKey());
+
+			for (Map.Entry<Long, Neighbour> neighbourEntry : nodeEntry.getValue().getNeighbours().entrySet()){
+				neighbourEntry.getValue().setId(neighbourEntry.getKey());
+			}
+		}
+
+		synchronized(this){
+			graphs.put(graph.getId(), graph);
+			DatabaseClass.persistDatabase();
+			return graph;
+		}
+	}
+
+	public static void validateGraph(Graph graph) {
+		for (Node node : graph.getNodes().values()) {
+			NodeService.validateNode(graph, node);
+		}
+	}
+}