RulesItemRefresher.java

/**
 * Copyright (c) 2014-2017 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.eclipse.smarthome.model.rule.jvmmodel;

import java.util.Collection;

import org.eclipse.smarthome.core.items.Item;
import org.eclipse.smarthome.core.items.ItemRegistry;
import org.eclipse.smarthome.core.items.ItemRegistryChangeListener;

/**
 * The {@link RulesItemRefresher} is responsible for reloading rules resources every time an item is added or removed.
 *
 * @author Oliver Libutzki - Initial contribution
 * @author Kai Kreuzer - added delayed execution
 * @author Maoliang Huang - refactor
 *
 */
public class RulesItemRefresher extends RulesRefresher implements ItemRegistryChangeListener {

    private ItemRegistry itemRegistry;

    public void setItemRegistry(ItemRegistry itemRegistry) {
        this.itemRegistry = itemRegistry;
        this.itemRegistry.addRegistryChangeListener(this);
    }

    public void unsetItemRegistry(ItemRegistry itemRegistry) {
        this.itemRegistry.removeRegistryChangeListener(this);
        this.itemRegistry = null;
    }

    @Override
    public void added(Item element) {
        scheduleRuleRefresh();
    }

    @Override
    public void removed(Item element) {
        scheduleRuleRefresh();
    }

    @Override
    public void updated(Item oldElement, Item element) {

    }

    @Override
    public void allItemsChanged(Collection<String> oldItemNames) {
        scheduleRuleRefresh();
    }
}