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/**
 *  Copyright (c) 1997-2013, www.tinygroup.org ([email protected]).
 *
 *  Licensed under the GPL, Version 3.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.gnu.org/licenses/gpl.html
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.tinygroup.jsqlparser.util.deparser;

import org.tinygroup.jsqlparser.expression.ExpressionVisitor;
import org.tinygroup.jsqlparser.statement.delete.Delete;

/**
 * A class to de-parse (that is, tranform from JSqlParser hierarchy into a
 * string) a {@link org.tinygroup.jsqlparser.statement.delete.Delete}
 */
public class DeleteDeParser {

	protected StringBuilder buffer;
	protected ExpressionVisitor expressionVisitor;
    
    public DeleteDeParser(){
    	
    }

	/**
	 * @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 DeleteDeParser(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(Delete delete) {
		buffer.append("DELETE FROM ").append(delete.getTable().getFullyQualifiedName());
		if (delete.getWhere() != null) {
			buffer.append(" WHERE ");
			delete.getWhere().accept(expressionVisitor);
		}

	}

	public ExpressionVisitor getExpressionVisitor() {
		return expressionVisitor;
	}

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