org.trancecode.lang.StringPredicates.java Source code

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Here is the source code for org.trancecode.lang.StringPredicates.java

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/*
 * Copyright (C) 2010 Herve Quiroz
 *
 * 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.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 
 */
package org.trancecode.lang;

import com.google.common.base.Predicate;
import com.google.common.base.Predicates;

/**
 * {@link Predicate} implementations related to {@link String}.
 * 
 * @author Herve Quiroz
 */
public final class StringPredicates {
    private StringPredicates() {
        // No instantiation
    }

    /**
     * @see String#endsWith(String)
     */
    public static Predicate<String> endsWith(final String suffix) {
        return string -> string.endsWith(suffix);
    }

    public static Predicate<String> isEmpty() {
        // TODO singleton
        return String::isEmpty;
    }

    public static Predicate<String> isNotEmpty() {
        // TODO singleton
        return Predicates.not(isEmpty());
    }

    public static Predicate<String> isContainedBy(final String string) {
        return string::contains;
    }
}