com.liferay.portal.convert.ConvertProcessUtil Maven / Gradle / Ivy

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/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.portal.convert;

import com.liferay.osgi.service.tracker.collections.map.ServiceTrackerMap;
import com.liferay.osgi.service.tracker.collections.map.ServiceTrackerMapFactory;
import com.liferay.portal.kernel.module.util.SystemBundleUtil;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;

import org.osgi.framework.BundleContext;

/**
 * @author Iván Zaera
 */
public class ConvertProcessUtil {

	public static ConvertProcess getConvertProcess(String className) {
		return _convertProcesses.getService(className);
	}

	public static Collection getConvertProcesses() {
		return _convertProcesses.values();
	}

	public static Collection getEnabledConvertProcesses() {
		Collection convertProcesses = new ArrayList<>(
			getConvertProcesses());

		Iterator iterator = convertProcesses.iterator();

		while (iterator.hasNext()) {
			ConvertProcess convertProcess = iterator.next();

			if (!convertProcess.isEnabled()) {
				iterator.remove();
			}
		}

		return convertProcesses;
	}

	private static final BundleContext _bundleContext =
		SystemBundleUtil.getBundleContext();

	private static final ServiceTrackerMap
		_convertProcesses = ServiceTrackerMapFactory.openSingleValueMap(
			_bundleContext, ConvertProcess.class, null,
			(serviceReference, emitter) -> {
				ConvertProcess convertProcess = _bundleContext.getService(
					serviceReference);

				Class clazz = convertProcess.getClass();

				emitter.emit(clazz.getName());

				_bundleContext.ungetService(serviceReference);
			});

}