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

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

public class SetStatementDeParser {

	private StringBuilder buffer;
	private ExpressionVisitor expressionVisitor;

	/**
	 * @param expressionVisitor a {@link ExpressionVisitor} to de-parse
	 * expressions. It has to share the same<br>
	 * 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());
		buffer.append(" = ");
        set.getExpression().accept(expressionVisitor);
	}

	public ExpressionVisitor getExpressionVisitor() {
		return expressionVisitor;
	}

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