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/*
 * #%L
 * Wikitty :: api
 * %%
 * Copyright (C) 2009 - 2010 CodeLutin, Benjamin Poussin
 * %%
 * This program 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 3 of the 
 * License, or (at your option) any later version.
 * 
 * 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 Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public 
 * License along with this program.  If not, see
 * .
 * #L%
 */
package org.nuiton.wikitty.search.operators;

import java.io.Serializable;
import java.util.List;

/**
 * And operator is used to build conjunctive restriction for request on content.
 * It take at least 2 args. 

 * 

 * For example, use:
 * 
 * RestrictionHelper.and( restriction1, restriction2 )
 * RestrictionHelper.and( restriction1, restriction2, restriction3 )
 * RestrictionHelper.and(
 * my_JavaUtilList_Of_Restriction_Witch_Size_Is_Upper_Than2 )
 * 
 * @deprecated since 3.3 use new query api {@link org.nuiton.wikitty.query.WikittyQuery}
 */
@Deprecated
public class And extends Restriction implements Serializable {

    // serialVersionUID is used for serialization.
    private static final long serialVersionUID = 1L;

    protected List restrictions;

    /**
     * Default constructor
     */
    public And() {
        super();
    }

    /**
     * Constructor with all parameters initialized
     * 
     * @param restrictions
     */
    public And(List restrictions) {
        this();
        this.restrictions = restrictions;
    }

    /**
     * Return restrictions
     * 
     * @return
     */
    public List getRestrictions() {
        return restrictions;
    }

    /**
     * Set a value to parameter restrictions.
     * 
     * @param restrictions
     */
    public void setRestrictions(List restrictions) {
        this.restrictions = restrictions;
    }

    /**
     * Equality test based attributes values
     * 
     * @param value
     *            Value to compare
     */
    public boolean equals(Object other) {
        if (this == other) {
            return true;
        }
        if (!(other instanceof And)) {
            return false;
        }

        final And and = (And) other;

        if ((restrictions == null && and.getRestrictions() != null)
                || (restrictions != null && !restrictions.equals(and
                        .getRestrictions()))) {
            return false;
        }

        return true;
    }

    public int hashCode() {
        // equals use restrictions but unable to create hashCode from
        // restrictions because it is not
        // constant through time using arbitrary constant hash-code
        return And.class.hashCode();
    }

}