package org.simantics.interop.mapping.data;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;


public class ObjectSetIdentifiable implements Identifiable {

	private Set<Object> objs;
	
	public ObjectSetIdentifiable(Object obj) {
		objs = new HashSet<Object>();
		objs.add(obj);
	}
	
	public ObjectSetIdentifiable(Object... obj) {
		this.objs = new HashSet<Object>();
		for (Object r : obj)
			this.objs.add(r);
	}
	
	public ObjectSetIdentifiable(Collection<Object> obj) {
		this.objs = new HashSet<Object>();
		for (Object r : obj)
			this.objs.add(r);
	}
	
	public Set<Object> getObjects() {
		return objs;
	}
	
	@SuppressWarnings("unchecked")
	@Override
	public <T> T getAdapter(Class<T> clazz) {
		if (clazz.equals(String.class)) {
			String s = "";
			for (Object o : objs)
				s += o.toString() + " ";
			return (T)s;
		}
		return null;
	}
	
	@Override
	public int hashCode() {
		return objs.hashCode();
	}
	
	@Override
	public boolean equals(Object arg0) {
		if (arg0 == null)
			return false;
		if (this.getClass() != arg0.getClass())
			return false;
		ObjectSetIdentifiable other = (ObjectSetIdentifiable)arg0;
		return objs.equals(other.objs);
	}
	
	@Override
	public Identifiable merge(Identifiable other) {
		if (other instanceof ObjectIdentifiable) {
			Collection<Object> coll = new ArrayList<Object>();
			coll.addAll(this.objs);
			coll.add(((ObjectIdentifiable)other).getObject());
			ObjectSetIdentifiable i = new ObjectSetIdentifiable(coll);
			return i;
		} else if (other instanceof ObjectSetIdentifiable) {
			Collection<Object> coll = new ArrayList<Object>();
			coll.addAll(this.objs);
			coll.addAll(((ObjectSetIdentifiable)other).getObjects());
			ObjectSetIdentifiable i = new ObjectSetIdentifiable(coll);
			return i;
		}
		return null;
	}
	
}