arangodb object mapper

A simple object mapper (based on Jackson) to store java objects into a ArangoDB database.

Installation & Testing

Please check the ArangoDB Installation Manual for installation and compilation instructions.

Start ArangoDB on localhost port 8529.

The arangodb object mapper is built with mvn clean install

First Steps

Create a new class

public class Point extends ArangoDbDocument {
    private Integer x;
    private Integer y;
    public Point() {
    }
    public Point(Integer x, Integer y) {
        this.x = x;
        this.y = y;
    }    
    public Integer getX() {
        return x;
    }
    public void setX(Integer x) {
        this.x = x;
    }
    public Integer getY() {
        return y;
    }
    public void setY(Integer y) {
        this.y = y;
    }
}

Create a new repository class

class PointRepository extends ArangoDbRepository<Point> {        
    public PointRepository(Database database) {
        super(database, Point.class);
    }

Create database connection and repository

ArangoDbHttpClient client = new ArangoDbHttpClient.Builder().host("localhost")
                                                            .port(8529)
                                                            .build();       

/* use "_system" database. can use any other database if required */
Database database = new Database(client, "_system");

PointRepository repo = new PointRepository(database);

Save a object

Point p = new Point(1, 2);        
try {
    repo.create(p);
} catch (ArangoDb4JException e) {
    ...
}

Update the object

p.setX(5);        
try {
    repo.update(p);
} catch (ArangoDb4JException e) {
    ...
}

Get all Objects

Cursor<Point> cursor = null;
try {
    cursor = repo.getAll();
} catch (ArangoDb4JException e) {
    ...
}
while (cursor.hasNext()) {
    Point p = cursor.next();
    ...
}

Sort by key

Cursor<Point> cursor = repo.getQuery().sort("x", PropertySort.Direction.DESCENDING).execute();
while (cursor.hasNext()) {
	Point p = cursor.next();
	...
}

Windowing

Cursor<Point> cursor = repo.getQuery().limit(11,10).sort("x", PropertySort.Direction.DESCENDING).execute();
while (cursor.hasNext()) {
	Point p = cursor.next();
	...
}

Creating databases and collections

ArangoDbHttpClient client = new ArangoDbHttpClient.Builder().host("localhost")
                                                            .port(8529)
                                                            .build();      
Database db = Database.createDatabase(client, "MyDatabase"); 
Collection coll = db.createCollection("MyCollection");