verigraph/src/it/polito/verigraph/service/GraphService.java

   1 /*******************************************************************************
   2  * Copyright (c) 2017 Politecnico di Torino and others.
   3  *
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Apache License, Version 2.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.apache.org/licenses/LICENSE-2.0
   8  *******************************************************************************/
   9 package it.polito.verigraph.service;
  10
  11 import java.io.IOException;
  12 import java.util.List;
  13 import javax.xml.bind.JAXBException;
  14 import com.fasterxml.jackson.core.JsonParseException;
  15 import com.fasterxml.jackson.core.JsonProcessingException;
  16 import com.fasterxml.jackson.databind.JsonMappingException;
  17 import it.polito.neo4j.manager.Neo4jDBManager;
  18 import it.polito.neo4j.exceptions.MyInvalidIdException;
  19 import it.polito.neo4j.exceptions.MyNotFoundException;
  20 import it.polito.verigraph.exception.ForbiddenException;
  21 import it.polito.verigraph.model.Graph;
  22 import it.polito.verigraph.model.Node;
  23
  24 public class GraphService {
  25
  26     private Neo4jDBManager manager= new Neo4jDBManager();
  27     public static VerigraphLogger vlogger = VerigraphLogger.getVerigraphlogger();
  28
  29     public GraphService() {}
  30
  31     public List<Graph> getAllGraphs() throws JsonProcessingException, MyNotFoundException {
  32         List<Graph> result;
  33         result=manager.getGraphs();
  34         for(Graph g : result){
  35             validateGraph(g);
  36         }
  37         return result;
  38     }
  39
  40     public Graph getGraph(long id) throws JsonParseException, JsonMappingException, JAXBException, IOException {
  41         if (id < 0) {
  42             throw new ForbiddenException("Illegal graph id: " + id);
  43         }
  44         Graph localGraph=manager.getGraph(id);
  45         validateGraph(localGraph);
  46         return localGraph;
  47     }
  48
  49     public Graph updateGraph(Graph graph) throws JAXBException, JsonParseException, JsonMappingException, IOException, MyInvalidIdException {
  50         if (graph.getId() < 0) {
  51             throw new ForbiddenException("Illegal graph id: " + graph.getId());
  52         }
  53         validateGraph(graph);
  54         Graph localGraph=new Graph();
  55         localGraph=manager.updateGraph(graph);
  56         vlogger.logger.info("Graph updated");
  57         validateGraph(localGraph);
  58         return localGraph;
  59     }
  60
  61
  62     public void removeGraph(long id) {
  63
  64         if (id < 0) {
  65             throw new ForbiddenException("Illegal graph id: " + id);
  66         }
  67         manager.deleteGraph(id);
  68     }
  69
  70     public Graph addGraph(Graph graph) throws JAXBException, JsonParseException, JsonMappingException, IOException, MyInvalidIdException {
  71         validateGraph(graph);
  72         Graph g=manager.addGraph(graph);
  73         validateGraph(g);
  74         return g;
  75     }
  76
  77     public static void validateGraph(Graph graph) throws JsonProcessingException {
  78         for (Node node : graph.getNodes().values()) {
  79             NodeService.validateNode(graph, node);
  80         }
  81     }
  82 }