/*
 * Copyright 1999-2017 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.statement;

import com.alibaba.druid.sql.ast.SQLExpr;
import com.alibaba.druid.sql.ast.SQLObject;
import com.alibaba.druid.sql.ast.SQLStatementImpl;
import com.alibaba.druid.sql.visitor.SQLASTVisitor;

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

public class MySqlKillStatement extends SQLStatementImpl {
    private Type type;
    private List<SQLExpr> threadIds = new ArrayList<SQLExpr>();

    public static enum Type {
        CONNECTION, QUERY
    }

    public Type getType() {
        return type;
    }

    public void setType(Type type) {
        this.type = type;
    }

    public SQLExpr getThreadId() {
        return threadIds.get(0);
    }

    public void setThreadId(SQLExpr threadId) {
        if (this.threadIds.isEmpty()) {
            this.threadIds.add(threadId);
            return;
        }
        this.threadIds.set(0, threadId);
    }

    public List<SQLExpr> getThreadIds() {
        return threadIds;
    }

    protected void accept0(SQLASTVisitor visitor) {
        if (visitor.visit(this)) {
            acceptChild(visitor, threadIds);
        }
        visitor.endVisit(this);
    }

    @Override
    public List<SQLObject> getChildren() {
        return Collections.<SQLObject>emptyList();
    }
}
