/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 Lukas Plechinger
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package at.plechinger.scrapeql.relation;

import scala.Option;

/**
 * Created by lukas on 04.08.15.
 */
public class Selector {

    private String selector;
    private String alias = null;

    public Selector(String selector) {
        this.selector = selector;
    }

    public Selector(String selector, String alias) {
        this.selector = selector;
        this.alias = alias;
    }

    public Selector(String selector, Option<String> alias) {
        this.selector = selector;
        if (alias.nonEmpty()) {
            this.alias = alias.get();
        }

    }

    public String getSelector() {
        return selector;
    }

    public String getAlias() {
        return (alias != null) ? alias : generateAlias(selector);
    }

    private static String generateAlias(String selector) {
        return selector.replaceAll("\\W+", "_");
    }
}
