/*******************************************************************************
 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
 * in Industry THTH ry.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.db.common.procedure.wrapper;

import org.simantics.db.AsyncReadGraph;
import org.simantics.db.ReadGraph;
import org.simantics.db.common.request.ReadRequest;
import org.simantics.db.common.utils.Logger;
import org.simantics.db.exception.DatabaseException;
import org.simantics.db.procedure.AsyncListener;
import org.simantics.db.procedure.Procedure;
import org.simantics.db.procedure.SyncListener;

final public class SyncToAsyncListener<T> implements AsyncListener<T> {

	final private SyncListener<T> procedure;

	public SyncToAsyncListener(SyncListener<T> procedure) {
		this.procedure = procedure;
	}
	
	@Override
	final public void execute(AsyncReadGraph graph, final T result) {
//	    System.out.println("SyncToAsyncListener for " + procedure + " - execute " + result);
		graph.asyncRequest(new ReadRequest() {

			@Override
			public void run(ReadGraph graph) throws DatabaseException {
//		        System.out.println("SyncToAsyncListener for " + procedure + " - execute " + result);
				procedure.execute(graph, result);
			}
			
			@Override
			public String toString() {
			    return "execute for " + SyncToAsyncListener.this.toString();
			}
			
		}, new Procedure<Object>() {

            @Override
            public void exception(Throwable t) {
	    		Logger.defaultLogError(t);
            }

            @Override
            public void execute(Object result) {
            }
		    
		});
	}

	@Override
	final public void exception(AsyncReadGraph graph, final Throwable t) {
        graph.asyncRequest(new ReadRequest() {

            @Override
            public void run(ReadGraph graph) throws DatabaseException {
                procedure.exception(graph, t);
            }
            
        });
	}

	@Override
	public boolean isDisposed() {
	    return procedure.isDisposed();
	}
	
    @Override
    public String toString() {
        return "SyncToAsyncListener -> " + procedure;
   }
	
}