EnergyToVolumePointConverter.java

package com.pulseenergy.calorificvalues;

import com.pulseenergy.core.quantity.Quantity;
import com.pulseenergy.core.quantity.Resource;
import com.pulseenergy.point.CorePointKey;
import com.pulseenergy.point.Point;
import com.pulseenergy.point.conversion.PointConverter;
import com.pulseenergy.point.model.EnergyPointModel;
import com.pulseenergy.space.Space;

import java.util.Collections;
import java.util.List;
import java.util.Map;

public class EnergyToVolumePointConverter extends PointConverter {

	private final Space space;

	public EnergyToVolumePointConverter(Space space) {
		this.space = space;
	}

	@Override
	public double getWeight() {
		return Weight.forLevel(2);
	}

	@Override
	public boolean canConvertTo(CorePointKey targetPointKey) {
		return Resource.NaturalGas.equals(targetPointKey.getResource()) &&  Quantity.Volume.equals(targetPointKey.getQuantity());
	}

	@Override
	public List<CorePointKey> getConvertiblePointKeys(CorePointKey targetPointKey) {
		if (canConvertTo(targetPointKey)) {
			return Collections.singletonList(new CorePointKey(Resource.NaturalGas, com.pulseenergy.core.quantity.Quantity.Energy));
		}

		return Collections.emptyList();
	}

	@Override
	public Point createConversionPoint(Map<CorePointKey, Point> sourcePoints, CorePointKey targetPointKey) {
		CorePointKey corePointKey = getConvertiblePointKeys(targetPointKey).get(0);

		if (corePointKey != null) {
			Point p =  new Point(new EnergyPointModel(), space.getOrganization(), targetPointKey.getQuantity());
			p.setSpace(space);
		}

		return null;
	}
}