li.klass.fhem.util.Optionals.java Source code

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Here is the source code for li.klass.fhem.util.Optionals.java

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/*
 * AndFHEM - Open Source Android application to control a FHEM home automation
 * server.
 *
 * Copyright (c) 2011, Matthias Klass or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Inc.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU GENERAL PUBLIC LICENSE, as published by the Free Software Foundation.
 *
 * This program 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 GENERAL PUBLIC LICENSE
 * for more details.
 *
 * You should have received a copy of the GNU GENERAL PUBLIC LICENSE
 * along with this distribution; if not, write to:
 *   Free Software Foundation, Inc.
 *   51 Franklin Street, Fifth Floor
 *   Boston, MA  02110-1301  USA
 */

package li.klass.fhem.util;

import com.google.common.base.Function;
import com.google.common.base.Optional;
import com.google.common.base.Predicate;

public class Optionals {
    public static final Predicate<Optional<?>> PRESENT = new Predicate<Optional<?>>() {
        @Override
        public boolean apply(Optional<?> input) {
            return input.isPresent();
        }
    };

    public static <T> Function<Optional<T>, T> get() {
        return new Function<Optional<T>, T>() {
            @Override
            public T apply(Optional<T> input) {
                return input.get();
            }
        };
    }
}