netbout-lite-1.5.6.src.main.java.com.netbout.lite.terms.PosTerm Maven / Gradle / Ivy

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/**
 * Copyright (c) 2009-2012, Netbout.com
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met: 1) Redistributions of source code must retain the above
 * copyright notice, this list of conditions and the following
 * disclaimer. 2) Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following
 * disclaimer in the documentation and/or other materials provided
 * with the distribution. 3) Neither the name of the NetBout.com nor
 * the names of its contributors may be used to endorse or promote
 * products derived from this software without specific prior written
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.netbout.lite.terms;

import com.netbout.lite.Term;
import com.netbout.spi.Message;
import java.util.Arrays;
import java.util.List;

/**
 * Term "Pos".
 *
 * This class is immutable and thread-safe.
 *
 * @author Yegor Bugayenko ([email protected])
 * @version $Id: PosTerm.java 3526 2012-10-30 07:30:27Z guard $
 */
final class PosTerm extends AbstractTerm {

    /**
     * Sub term to use.
     */
    private final transient Term term;

    /**
     * Public ctor.
     * @param args Arguments
     */
    public PosTerm(final List args) {
        super(args);
        this.term = new AndTerm(
            Arrays.asList(
                new FromTerm(args),
                new LimitTerm(Arrays.asList(new TextTerm("1")))
            )
        );
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean matches(final Message message) {
        return this.term.matches(message);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public String value(final Message message) {
        throw new UnsupportedOperationException(
            "POS predicate used as atom"
        );
    }

}