Helpers

MeemDefinitionFactory

MeemDefinition createMeemDefinition(Class<?> meemSpecification);
MeemDefinition createMeemDefinition(Class<?>... wedgeClasses);
MeemDefinition createMeemDefinition(Collection<Class<?>> wedgeClasses);
MeemDefinition createMeemDefinition(String meemTypeIdentifier);

Example

MeemDefinition meemDefinition = MeemDefinitionFactory.spi.create().createMeemDefinition(EmbeddedJettyWedge.class);

LifeCycleManagerHelper

This may be used to create Meems

LifeCycleManagerHelper.createTransientMeem(meemDefinition, LifeCycleState.LOADED, new AsyncCallback<Meem>() {
	public void result(Meem webServerMeem) {
		logger.info("created web server meem");
		configureWebServer(webServerMeem);			// configure the web server
	}

	public void exception(Exception e) {
		logger.log(Level.INFO, "problem creating web server meem", e);
	}
});

MeemPathResolverHelper

Resolves a Meem from a MeemPath

void resolveMeemPath(MeemPath meemPath, AsyncCallback<Meem> callback)

ReferenceHelper

To retrieve Facet interfaces from Meems.

<T extends Facet> void getTarget(Meem meem, String facetName, Class<T> specification, AsyncCallback<T> callback)

Example

ReferenceHelper.getTarget(webServerMeem, "configurationHandler", ConfigurationHandler.class, new AsyncCallback<ConfigurationHandler>() {
	public void result(ConfigurationHandler configurationHandler) {
		logger.info("!!!! got configuration handler");
		ConfigurationIdentifier id = new ConfigurationIdentifier("embeddedJettyWedge", "port");
		configurationHandler.valueChanged(id, Integer.valueOf(8888));
		makeReady(webServerMeem);
	}
	public void exception(Exception e) {
		logger.log(Level.INFO, "problem getting configuration handler", e);
	}
});

HyperspaceHelper

CategoryHelper

MeemHelper

MetaMeemHelper

EssentialMeemHelper

SubsystemManagerHelper