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/*
 * #%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
 * .
 * #L%
 */
package net.sf.jsqlparser.util.deparser;

import net.sf.jsqlparser.expression.ExpressionVisitor;
import net.sf.jsqlparser.statement.SetStatement;

public class SetStatementDeParser {

    protected StringBuilder buffer;
    private ExpressionVisitor expressionVisitor;

    /**
     * @param expressionVisitor a {@link ExpressionVisitor} to de-parse expressions. It has to share
     * the same

     * StringBuilder (buffer parameter) as this object in order to work
     * @param buffer the buffer that will be filled with the select
     */
    public SetStatementDeParser(ExpressionVisitor expressionVisitor, StringBuilder buffer) {
        this.buffer = buffer;
        this.expressionVisitor = expressionVisitor;
    }

    public StringBuilder getBuffer() {
        return buffer;
    }

    public void setBuffer(StringBuilder buffer) {
        this.buffer = buffer;
    }

    public void deParse(SetStatement set) {
        buffer.append("SET ").append(set.getName());
        if (set.isUseEqual()) {
            buffer.append(" =");
        }
        buffer.append(" ");
        set.getExpression().accept(expressionVisitor);
    }

    public ExpressionVisitor getExpressionVisitor() {
        return expressionVisitor;
    }

    public void setExpressionVisitor(ExpressionVisitor visitor) {
        expressionVisitor = visitor;
    }
}