Difference between revisions of "Eclipse4/RCP/EAS/Common Services"

Revision as of 12:28, 12 April 2011

Besides OSGi services, the E4AP also exposes other services that can be consumed by clients.

Logging

The org.eclipse.e4.core.services.log.Logger class provides clients with a number of convenience methods for logging information. Some of its methods takes Object[] arrays and will perform binding internally to format the message appropriately.

Adapter Pattern

The org.eclipse.e4.core.services.adapter.Adapter interface provides a way for clients to adapt an object to another type. This is akin to the org.eclipse.core.runtime.IAdapterFactory and org.eclipse.core.runtime.IAdaptable interfaces from Eclipse 3.x.

API Comparison

public class Consumer {
 
  private Model model;
 
  public void update(Object object) {
    IModelProvider provider = (IModelProvider) Platform.getAdapterManager(object, IModelProvider.class);
    if (provider != null) {
      model = provider.getModel();
    }
  }
}

public class Consumer {
 
  @Inject
  private Adapter adapter;
 
  private Model model;
 
  public void update(Object object) {
    IModelProvider provider = adapter.adapt(object, IModelProvider.class);
    if (provider != null) {
      model = provider.getModel();
    }
  }
}