OpenEnergyMonitorValueStore.java

/**
 * Copyright (c) 2010-2016 by the respective copyright holders.
 *
 * 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 org.openhab.binding.openenergymonitor.internal;

import java.util.HashMap;

/**
 * This class provide temporary value store for Open Energy Monitor values.
 *
 * @author Pauli Anttila
 * @since 1.4.0
 */
public class OpenEnergyMonitorValueStore {

    HashMap<String, Double> latestValues = null;

    OpenEnergyMonitorValueStore() {
        latestValues = new HashMap<String, Double>();
    }

    public double getValue(String item) throws IllegalArgumentException {

        if (latestValues.containsKey(item)) {
            return latestValues.get(item);
        }

        throw new IllegalArgumentException();
    }

    public void setValue(String item, double value) {
        latestValues.put(item, value);
    }

    public double incValue(String item, double value) throws IllegalArgumentException {
        double val = getValue(item) + value;
        setValue(item, val);
        return val;
    }

}