com.isotrol.impe3.core.impl.AbstractParameters.java Source code

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Here is the source code for com.isotrol.impe3.core.impl.AbstractParameters.java

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/**
 * This file is part of Port@l
 * Port@l 3.0 - Portal Engine and Management System
 * Copyright (C) 2010  Isotrol, SA.  http://www.isotrol.com
 *
 * Port@l is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Port@l 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 Port@l.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.isotrol.impe3.core.impl;

import java.util.Set;

import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Sets;
import com.isotrol.impe3.api.Parameters;

/**
 * Skeletal implementation for map-based parameters.
 * @author Andres Rodriguez
 */
abstract class AbstractParameters<V> implements Parameters<V> {
    AbstractParameters() {
    }

    static <T> Set<T> intersect(Set<T> initial, Set<T> included) {
        if (included == null || included.isEmpty()) {
            return ImmutableSet.of();
        }
        return Sets.intersection(initial, included);
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.isotrol.impe3.api.Parameters#contains(java.lang.String)
     */
    public boolean contains(String name) {
        return getNames().contains(name);
    }
}