package org.simantics.document.server.state;

import org.simantics.db.ReadGraph;
import org.simantics.db.exception.DatabaseException;
import org.simantics.db.layer0.variable.NodeSupport;
import org.simantics.simulator.toolkit.StandardNodeManager;
import org.simantics.simulator.toolkit.StandardRealm;
import org.simantics.simulator.toolkit.db.StandardSessionManager;

public class StateSessionManager extends StandardSessionManager<StateNode, StateNodeManagerSupport> {

	private static StateSessionManager INSTANCE;

	public static StateSessionManager getInstance() {
		if(INSTANCE == null) {
			INSTANCE = new StateSessionManager();
		}
		return INSTANCE;
	}

	@Override
	protected StateNodeManagerSupport createEngine(ReadGraph graph, String id) throws DatabaseException {
		return new StateNodeManagerSupport();
	}

	@Override
	protected StandardRealm<StateNode, StateNodeManagerSupport> createRealm(StateNodeManagerSupport engine, String id) {
		return new StateRealm(engine, id);
	}

	@Override
	public void registerNodeSupport(StandardNodeManager<StateNode, StateNodeManagerSupport> manager,
			NodeSupport<StateNode> support) {
		((StateNodeManager)manager).registerSupport(support);
	}

}