/*
 * Copyright 1999-2011 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 * 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 com.alibaba.druid.sql.dialect.mysql.ast;

import java.util.ArrayList;
import java.util.List;

import com.alibaba.druid.sql.ast.SQLExpr;
import com.alibaba.druid.sql.ast.statement.SQLConstaintImpl;
import com.alibaba.druid.sql.ast.statement.SQLTableConstaint;
import com.alibaba.druid.sql.ast.statement.SQLUniqueConstraint;
import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlASTVisitor;
import com.alibaba.druid.sql.visitor.SQLASTVisitor;

@SuppressWarnings("serial")
public class MySqlKey extends SQLConstaintImpl implements SQLUniqueConstraint, SQLTableConstaint {

    private List<SQLExpr> columns = new ArrayList<SQLExpr>();
    private String        indexType;

    public MySqlKey(){

    }

    @Override
    protected void accept0(SQLASTVisitor visitor) {
        if (visitor instanceof MySqlASTVisitor) {
            accept0((MySqlASTVisitor) visitor);
        }
    }

    protected void accept0(MySqlASTVisitor visitor) {
        if (visitor.visit(this)) {
            acceptChild(visitor, this.getName());
            acceptChild(visitor, this.getColumns());
        }
        visitor.endVisit(this);
    }

    @Override
    public List<SQLExpr> getColumns() {
        return columns;
    }

    public String getIndexType() {
        return indexType;
    }

    public void setIndexType(String indexType) {
        this.indexType = indexType;
    }

}
