JGMmongo

Java Object Mapper for MongoDB

#Based in:

• Java Driver for MongoDB
• GSon

Contacts: Aristides Villareal Bravo email:[email protected] http://avbravo.blogspot.com

It works similar to JPA, visit Wiki for Documentation

JGMongo

1.Add to pom.xml

<repositories>

	<repository>

	  <id>jitpack.io</id>

	   <url>https://jitpack.io</url>

	</repository>

</repositories>

  
<dependencies>
     <dependency>
    <groupId>com.github.avbravo</groupId>
    <artifactId>jgmongo</artifactId>
    <version>0.4</version>
</dependency>
</dependencies>

2. Create beans

@Getter

@Setter

public class Paises extends GenericBeans {

@Id  

@SerializedName("Siglas")

private String siglas;

@SerializedName("Pais")

private String pais;

@SerializedName("Logo")

private String logo;


public Document toDocument(Paises paises) {
    Document doc = new Document();
    try {
        doc = Document.parse(getGson().toJson(paises));
    } catch (Exception e) {
        System.out.println("toDocument() " + e.getLocalizedMessage());
    }
    return doc;
}

public Paises toPojo(Document doc) {
    Paises paises = new Paises();
    try {
        paises = (Paises) fromJsontoPojo(doc.toJson(), new Paises().getClass());
    } catch (Exception e) {
        System.out.println("toPojo() " + e.getLocalizedMessage());
    }
    return paises;
}

@Override

public String toString() {

    return "Paises{" + "siglas=" + siglas + ", pais=" + pais + '}';
    
}

}

A. For Java Standar Edition

Create Facade

public class PaisesFacade extends AbstractFacade{

public PaisesFacade( ){
    super(Paises.class, "mydatabase", "paises");
}

@Override
protected MongoClient getMongoClient() {
     MongoClient mongoClient = new MongoClient();
     return mongoClient;
}

}

** Example**

PaisesFacade paisesFacade =new PaisesFacade();

    Paises paises = new Paises();
    paises.setSiglas("pa");
    paises.setPais("Panama");
    paises.setLogo("");
    //save document
    paisesFacade.save(paises);
    //list all document
    List<Paises> list = paisesFacade.findAll();
    list.stream().forEach((p) -> {
        System.out.println(p.toString());
    });

B. For Java Enterprise Edition

Create MongoClientProvider

@Singleton

@ConcurrencyManagement(ConcurrencyManagementType.CONTAINER)

public class MongoClientProvider {

private MongoClient mongoClient = null;
	
@Lock(LockType.READ)
public MongoClient getMongoClient(){	
	return mongoClient;
}

@PostConstruct
public void init() {
        try {		
            mongoClient = new MongoClient();
        } catch (Exception e) {
            JSFUtil.addErrorMessage("init() "+e.getLocalizedMessage());
        }
			
}

}

Create Facade

@Stateless

public class PaisesFacade extends AbstractFacade {

@EJB

 MongoClientProvider mongoClientProvider;

@Override

protected MongoClient getMongoClient() {

     return mongoClientProvider.getMongoClient();

}

public PaisesFacade() {      

     super(Paises.class, "mydatabase", "paises");

}

}

Example

@Named

@ViewScoped

public class PaisesController implements Serializable {

@Inject

PaisesFacade paisesFacade;

public Boolean save(Paises paises){

   return paisesFacade.save(paises);

}

public List getPaises(){

  return paisesFacade.findAll();

}