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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.extend;

import org.tinygroup.jsqlparser.expression.Expression;
import org.tinygroup.jsqlparser.expression.ExpressionVisitorAdapter;
import org.tinygroup.jsqlparser.expression.JdbcParameter;
import org.tinygroup.jsqlparser.expression.operators.relational.ExpressionList;
import org.tinygroup.jsqlparser.expression.operators.relational.MultiExpressionList;
import org.tinygroup.jsqlparser.statement.select.SelectVisitor;
import org.tinygroup.jsqlparser.statement.select.SubSelect;

import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * 
 * @author renhui
 * 
 */
public class ParameterExpressionVisitor extends ExpressionVisitorAdapter {
	private Map positionMap;
	private AtomicInteger paramLength;
	private SelectVisitor selectVisitor;

	public ParameterExpressionVisitor(Map positionMap,
			AtomicInteger paramLength, SelectVisitor selectVisitor) {
		super();
		this.positionMap = positionMap;
		this.paramLength = paramLength;
		this.selectVisitor = selectVisitor;
	}

	@Override
	public void visit(JdbcParameter parameter) {
		paramLength.incrementAndGet();
	}

	@Override
	public void visit(SubSelect subSelect) {
		subSelect.getSelectBody().accept(selectVisitor);
	}

	@Override
	public void visit(ExpressionList expressionList) {
		List expressions = expressionList.getExpressions();
		if (expressions != null) {
			for (Expression expression : expressions) {
				expression.accept(this);
			}
		}
	}

	@Override
	public void visit(MultiExpressionList multiExprList) {
		List expressionLists = multiExprList.getExprList();
		if (expressionLists != null) {
			for (ExpressionList expressionList : expressionLists) {
				expressionList.accept(this);
			}
		}
	}
}