A type-safe Java library that helps your code to interact with MongoDB documents and convert them to/from Java objects. (aka pojongo)
Switch branches/tags
Nothing to show
Pull request Compare This branch is 28 commits behind rdllopes:master.
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Failed to load latest commit information.


Monjo is a lightweight type-safe library for mapping Java objects to/from MongoDB:

    * Easy to use, and very lightweight
    * Type-safe Query support
    * Annotations describe mapping behavior; there are no XML files.
    * Extensions: Validation (jsr330), and SLF4J Logging

    * Standard Mapping: use a set of rules for determining the physical fields and collections 
     names given the information in the mapping  document (ex: naming strategy prefers
     embedded underscores to mixed case names)
    * Javabeans: accessors and mutators are always used to infer fields 
class Employee implements IdentificableDocument<ObjectId>{
  ObjectId id; // auto-generated, if not set (see ObjectId)
  String firstName, lastName; // value types are automatically persisted
  Long salary = null; // only non-null values are stored 

  Address address; // by default fields are embedded

  @ReferenceKey<Employee> manager; //references can be saved without automatic loading
  List<Employee> underlings = new ArrayList<Employee>(); 
     // by default, use DBList to persist inner collections

  @Indexed boolean active = false; //fields can be indexed for better performance
  @Transient int notStored; //fields can be ignored (no load/save)
  transient boolean stored = true; //not @Transient, will be ignored by Serialization/GWT for example.


Special features

    * Find By Example (find a object using any field, maybe an inner inner inner ... object )

		PojoWithListInnerObject pojo = PojoBuilder.createMegaZordePojo();
		Monjo<ObjectId, PojoWithListInnerObject> monjo = new Monjo<ObjectId, PojoWithListInnerObject>(getMongoDB(), PojoWithListInnerObject.class);
		List<Category> categories = pojo.getCategories();
		Category category = categories.get(0);
		PojoWithListInnerObject result = pojongo.findByExample(pojo.toList().get(0);

    * Cursor (select page of selection, sort and so on) 
    	List<SimplePOJO> list = monjo.find().limit(5).toList();
     * Update inner Objects
     	 monjo.<Category> updateInnerObject("categories", category, pojo);

    * Does not store Null/Empty values (by default).
    * GWT support (entities are just POJOs) -- (GWT ignores annotations)

Note: @Reference will not save objects, just a reference to them; You must save them yourself. 

This library is currently at a very early development stage.