Package de.fhg.igd.mongomvcc

Examples of de.fhg.igd.mongomvcc.VDatabase.checkout()

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    VFactory factory = new MongoDBVFactory();
    VDatabase db = factory.createDatabase();
    db.connect("mongomvcc-five-minutes-tutorial");
   
    // Checkout the "master" branch
    VBranch master = db.checkout(VConstants.MASTER);
   
    // 2. Put something into the index
    VCollection persons = master.getCollection("persons");
    Map<String, Object> elvis = factory.createDocument();
    elvis.put("name", "Elvis");
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    // 6. Checkout a previous version
    System.out.println("There are " + persons.find().size() + " persons");
    Map<String, Object> elvis3 = persons.findOne(factory.createDocument("name", "Elvis"));
    System.out.println("Elvis is now " + elvis3.get("age") + " years old");
   
    VBranch oldMaster = db.checkout(firstCid);
    VCollection oldPersons = oldMaster.getCollection("persons");
    System.out.println("Previously, there were only " + oldPersons.find().size() + " persons");
    Map<String, Object> oldElvis = oldPersons.findOne(factory.createDocument("name", "Elvis"));
    System.out.println("Last year, Elvis was " + oldElvis.get("age") + " years old");
   
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