EntryCreateDateComparator.java

/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This file is part of Liferay Social Office. Liferay Social Office is free
 * software: you can redistribute it and/or modify it under the terms of the GNU
 * Affero General Public License as published by the Free Software Foundation,
 * either version 3 of the License, or (at your option) any later version.
 *
 * Liferay Social Office 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 Affero General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * Liferay Social Office. If not, see http://www.gnu.org/licenses/agpl-3.0.html.
 */

package com.liferay.microblogs.util.comparator;

import com.liferay.microblogs.model.MicroblogsEntry;
import com.liferay.portal.kernel.util.DateUtil;
import com.liferay.portal.kernel.util.OrderByComparator;

/**
 * @author Jonathan Lee
 */
public class EntryCreateDateComparator
	extends OrderByComparator<MicroblogsEntry> {

	public static final String ORDER_BY_ASC = "createDate ASC";

	public static final String ORDER_BY_DESC = "createDate DESC";

	public static final String[] ORDER_BY_FIELDS = {"createDate"};

	public EntryCreateDateComparator() {
		this(false);
	}

	public EntryCreateDateComparator(boolean ascending) {
		_ascending = ascending;
	}

	@Override
	public int compare(
		MicroblogsEntry microblogsEntry1, MicroblogsEntry microblogsEntry2) {

		int value = DateUtil.compareTo(
			microblogsEntry1.getCreateDate(), microblogsEntry2.getCreateDate());

		if (_ascending) {
			return value;
		}
		else {
			return -value;
		}
	}

	@Override
	public String getOrderBy() {
		if (_ascending) {
			return ORDER_BY_ASC;
		}
		else {
			return ORDER_BY_DESC;
		}
	}

	@Override
	public String[] getOrderByFields() {
		return ORDER_BY_FIELDS;
	}

	@Override
	public boolean isAscending() {
		return _ascending;
	}

	private boolean _ascending;

}