Eclipse e4 Kepler: IEclipsePreferences read/write -


i using di (dependency injection) access ieclipsepreferences handlers. need access same ieclipsepreferences other code parts save/load these settings.

this example how preferences , show em in dialog:

import java.lang.reflect.invocationtargetexception; import javax.inject.inject; import javax.inject.named; import org.eclipse.core.runtime.preferences.ieclipsepreferences; import org.eclipse.e4.core.di.annotations.execute; import org.eclipse.e4.core.di.extensions.preference; import org.eclipse.e4.ui.model.application.mapplication; import org.eclipse.e4.ui.services.iserviceconstants; import org.eclipse.jface.dialogs.messagedialog; import org.eclipse.swt.widgets.shell; import org.osgi.service.prefs.backingstoreexception;  public class pojoshowpersistencepreferenceshandler { @inject @preference ieclipsepreferences preferences;  @inject mapplication application;  @execute public void execute(@named(iserviceconstants.active_shell) shell shell ) throws invocationtargetexception, interruptedexception {     system.out.println(getclass().getsimplename() + ".execute()");     system.out.println("preferences: " + preferences);     system.out.println("application: " + application);     try {          string msg = "driver:\t"    + preferences.get("jdbc_driver", "404") + "\n" + //                 "url:\t" + preferences.get("jdbc_url", "404") + "\n" + //                 "user:\t" + preferences.get("jdbc_user", "404") + "\n" + //                 "password:\t" + preferences.get("jdbc_pwd", "404");         preferences.flush();         messagedialog.openinformation(shell,                 "info :: save persistence preferences",msg //         );         system.out.println(msg);     } catch (backingstoreexception e) {         e.printstacktrace();     } }

}

a) how can same without using handler? b) need set these values code without di or handler parameters, can called programmatically

i've been trying this (vogella) article somehow cannot find values stored in these (instance, configuration) scopes, stored, shown handler!

note: using 3.x plugin style, using old style not problem.

try this:

@preference(nodepath = "com.example.e4.rcp.todo")

this may reason why not find preferences.


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