MapFlatteningHelper.java

/*
 * Copyright (c) 2012 Diamond Light Source Ltd.
 *
 * 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
 */

package uk.ac.diamond.scisoft.analysis.rpc.flattening.helpers;

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

import uk.ac.diamond.scisoft.analysis.rpc.flattening.IFlattener;
import uk.ac.diamond.scisoft.analysis.rpc.flattening.IRootFlattener;

abstract public class MapFlatteningHelper<T> extends FlatteningHelper<T> {
	protected static final String CONTENT = "content";

	public MapFlatteningHelper(Class<T> type) {
		super(type);
	}

	public abstract T unflatten(Map<?, ?> thisMap, IRootFlattener rootFlattener);

	public Map<String, Object> createMap(String typeName) {
		Map<String, Object> outMap = new HashMap<String, Object>();
		outMap.put(IFlattener.TYPE_KEY, typeName);
		return outMap;
	}

	@Override
	public T unflatten(Object obj, IRootFlattener rootFlattener) {
		return unflatten((Map<?, ?>) obj, rootFlattener);
	}

	@Override
	public boolean canUnFlatten(Object obj) {
		if (obj instanceof Map<?, ?>) {
			Map<?, ?> thisMap = (Map<?, ?>) obj;
			return getTypeCanonicalName().equals(thisMap.get(IFlattener.TYPE_KEY));
		}

		return false;
	}
}