OrientDB is an open source NoSQL DBMS. It is fully written in Java. While it's a Document Database, it also has Graph and Object database features and API.
Wisdom-OrientDB brings OrientDB to your wisdom framework projects.
The wisdom-orientdb-object project provides an implementation of the Crud service; wrapping the object database features of OrientDB.
In order to use wisdom-orientdb-object within your wisdom project, you must follow two steps.
The first is to add it's dependency in your pom.xml.
<dependency>
<groupId>org.wisdom-framework</groupId>
<artifactId>wisdom-orientdb-object</artifactId>
<version>${release.version}</version>
</dependency>The second step is to configure your OrientDB database in wisdom application.conf
orientdb.test.url = memory:todolist
orientdb.test.user = test
orientdb.test.pass = test
orientdb.test.package = todolist.model
The example above shows how to set up an orientdb database with an alias test. The orientdb.test.package is the name of the package that contains your entities.
The optional orientdb.<alias>.autolazyloading boolean property is a convenient way to configure the default orientDB lazy loading behavior.
As an alternative you can set up your OrientDB model by providing an OrientDbRepoCommand service.
WOrientConf getConf();
List<Class<?>> getEntityClass();
void init(OObjectDatabaseTx db);
void destroy(OObjectDatabaseTx db);The service implementation must contain the configuration and the entities class list. The init and destroy
callback are hook that allows for: registering and de-registering your entities, as well as manage evolution.
Once wisdom-orientDB has been properly set up you can now requires either wisdom Crud services or the specialized OrientDbCrud for each of the entity available in your model package.
The following example illustrates how to inject an OrientDBCrud service for the entity Todo.class. An entity is a java class annotated with javax.persistence.Entity.
@Model(value = Todo.class)
private OrientDbCrud<Todo,String> todoCrud;More information about the behavior of the OrientDB database is available on their wiki.
OrientDB uses javassist in order to create proxy for the entity object. This can cause your project to experience some problems when being dynamicaly updated if it does not have javassist.util.proxy.Proxy in its classpath. A work around is to load this class in one of your component.
import javassist.util.proxy.Proxy;
//...
static {Class workaround = Proxy.class;}
//...