/*
 * #%L
 * JSQLParser library
 * %%
 * Copyright (C) 2004 - 2015 JSQLParser
 * %%
 * 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 2.1 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
 * <http://www.gnu.org/licenses/lgpl-2.1.html>.
 * #L%
 */
 /*
 * Copyright (C) 2015 JSQLParser.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301  USA
 */
package net.sf.jsqlparser.expression;

import java.util.List;
import net.sf.jsqlparser.expression.operators.relational.ExpressionList;
import net.sf.jsqlparser.statement.select.OrderByElement;
import net.sf.jsqlparser.statement.select.PlainSelect;

/**
 *
 * @author toben
 */
public class MySQLGroupConcat implements Expression {

    private ExpressionList expressionList;
    private boolean distinct = false;
    private List<OrderByElement> orderByElements;
    private String separator;

    public ExpressionList getExpressionList() {
        return expressionList;
    }

    public void setExpressionList(ExpressionList expressionList) {
        this.expressionList = expressionList;
    }

    public boolean isDistinct() {
        return distinct;
    }

    public void setDistinct(boolean distinct) {
        this.distinct = distinct;
    }

    public List<OrderByElement> getOrderByElements() {
        return orderByElements;
    }

    public void setOrderByElements(List<OrderByElement> orderByElements) {
        this.orderByElements = orderByElements;
    }

    public String getSeparator() {
        return separator;
    }

    public void setSeparator(String separator) {
        this.separator = separator;
    }

    @Override
    public void accept(ExpressionVisitor expressionVisitor) {
        expressionVisitor.visit(this);
    }

    @Override
    public String toString() {
        StringBuilder b = new StringBuilder();
        b.append("GROUP_CONCAT(");
        if (isDistinct()) {
            b.append("DISTINCT ");
        }
        b.append(PlainSelect.getStringList(expressionList.getExpressions(), true, false));
        if (orderByElements != null && !orderByElements.isEmpty()) {
            b.append(" ORDER BY ");
            for (int i = 0; i < orderByElements.size(); i++) {
                if (i > 0) {
                    b.append(", ");
                }
                b.append(orderByElements.get(i).toString());
            }
        }
        if (separator != null) {
            b.append(" SEPARATOR ").append(separator);
        }
        b.append(")");
        return b.toString();
    }
}
