EditableEntity.java

package nebula.data.impl;

import java.util.HashMap;
import java.util.Map;

import nebula.data.Editable;
import nebula.data.Entity;

public class EditableEntity extends EntityImp implements Editable {
	final Map<String, Object> newData;
	EntityImp source;

	boolean dirty = false;// <->pristine
	boolean valid = true;// <->invalid

	EditableEntity(DataStoreEx<Entity> store) {
		super(store, null);
		this.source = null;
		this.newData = new HashMap<String, Object>();
	}

	EditableEntity(DataStoreEx<Entity> store, EntityImp source) {
		super(store, source.data);
		this.source = source;
		this.newData = new HashMap<String, Object>();
	}

	public EditableEntity() {
		super(null, null);
		this.source = null;
		this.newData = new HashMap<String, Object>();
	}

	void resetWith(EntityImp source) {
		this.newData.clear();
		this.dirty = false;
		this.source = source;
		this.data = source.data;
	}

	@SuppressWarnings("unchecked")
	@Override
	public <T> T get(String name) {
		return newData.containsKey(name) || data == null ?  (T)newData.get(name) : (T)data.get(name);
	}

	public void put(String name, Object v) {
		newData.put(name, v);
		if (!this.dirty && data != null) {
			store.markChanged(this);
		}
		this.dirty = true;
	}

	public boolean isDirty() {
		return dirty;
	}

	@Override
	public String toString() {
		return "EditableEntity {" + newData.toString() + "}";
	}

	@Override
	public boolean isFresh() {
		return true;
	}

	@Override
	public void apply() {
		this.store.apply(this);
	}
}