Пример #1
0
  private List<String> selectViewCodes(String schema) throws UnknownHostException {
    // Initiate variables
    List<String> l = new ArrayList<String>();
    MongoDBConnectionManager mgr = MongoDBConnectionManager.getInstance();
    Mongo mongo = mgr.getMongo();
    DB db = mongo.getDB(schema);
    DBCollection collection = db.getCollection("views");

    // Compose NoSQL query
    BasicDBObject groupFiels = new BasicDBObject("_id", "$view_id");
    BasicDBObject group = new BasicDBObject("$group", groupFiels);
    BasicDBObject sortFiels = new BasicDBObject("_id", 1);
    BasicDBObject sort = new BasicDBObject("$sort", sortFiels);

    // Create the output
    AggregationOutput output = collection.aggregate(group, sort);
    Iterable<DBObject> results = output.results();
    for (DBObject result : results) {
      try {
        l.add(result.get("_id").toString());
      } catch (NullPointerException e) {
        System.out.println("Skipping NULL");
      }
    }

    // Return the result
    return l;
  }
Пример #2
0
  private String selectBooks(String collectionType, String type, String text, String schema)
      throws UnknownHostException {
    System.out.println(type);
    System.out.println(schema);
    List<String> l = new ArrayList<String>();
    MongoDBConnectionManager mgr = MongoDBConnectionManager.getInstance();
    Mongo mongo = mgr.getMongo();
    DB db = mongo.getDB(schema);
    // collectionType = "view"
    try {
      DBCollection collection = db.getCollection(collectionType);
      BasicDBObject searchQuery = new BasicDBObject();
      BasicDBObject regexQuery = new BasicDBObject();
      // regexQuery.put("title", new BasicDBObject("$regex", "^.*mi.*$").append("$options", "i"));

      regexQuery.put(type, new BasicDBObject("$regex", text).append("$options", "i"));

      DBCursor cursor = collection.find(regexQuery);
      while (cursor.hasNext()) l.add(cursor.next().toString());
    } catch (Exception e) {
      System.out.println(e.getMessage());
    }
    System.out.println(l);
    if (l.size() > 0) return l.toString();
    return "error";
  }
Пример #3
0
  private String selectBooks(
      String schema, String collection, String title, String author, String isbn)
      throws UnknownHostException {
    System.out.println(schema);
    System.out.println(collection);
    System.out.println(title);
    System.out.println(author);
    List<String> l = new ArrayList<String>();
    MongoDBConnectionManager mgr = MongoDBConnectionManager.getInstance();
    Mongo mongo = mgr.getMongo();
    DB db = mongo.getDB(schema);

    try {
      DBCollection c = db.getCollection(collection);
      BasicDBObject titleQuery = new BasicDBObject();
      titleQuery.put("title", new BasicDBObject("$regex", title));
      BasicDBObject authorQuery = new BasicDBObject();
      authorQuery.put("author", new BasicDBObject("$regex", author));

      BasicDBList or = new BasicDBList();
      or.add(titleQuery);
      or.add(titleQuery);

      DBObject query = new BasicDBObject("$and", or);

      DBCursor cursor = c.find(titleQuery);
      while (cursor.hasNext()) l.add(cursor.next().toString());
    } catch (Exception e) {
      System.out.println(e.getMessage());
    }
    System.out.println(l);
    if (l.size() > 0) return l.toString();
    else return null;
  }
Пример #4
0
 private void saveJson(String schema, String collection, String json) throws UnknownHostException {
   MongoDBConnectionManager mgr = MongoDBConnectionManager.getInstance();
   Mongo mongo = mgr.getMongo();
   DB db = mongo.getDB(schema);
   DBCollection c = db.getCollection(collection);
   DBObject dbObject = (DBObject) JSON.parse(json);
   c.insert(dbObject);
 }