content: /*
   * Copyright 1999-2012 Alibaba Group.
   *  
   * 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.
   */
  /**
   * (created at 2011-6-8)
   */
  package com.alibaba.cobar.parser.ast.stmt.mts;
  
  import com.alibaba.cobar.parser.ast.fragment.VariableScope;
  import com.alibaba.cobar.parser.ast.stmt.SQLStatement;
  import com.alibaba.cobar.parser.visitor.SQLASTVisitor;
  
  /**
   * @author <a href="mailto:shuo.qius@alibaba-inc.com">QIU Shuo</a>
   */
  public class MTSSetTransactionStatement implements SQLStatement {
      public static enum IsolationLevel {
          READ_UNCOMMITTED,
          READ_COMMITTED,
          REPEATABLE_READ,
          SERIALIZABLE
      }
  
      private final VariableScope scope;
      private final IsolationLevel level;
  
      public MTSSetTransactionStatement(VariableScope scope, IsolationLevel level) {
          super();
          if (level == null)
              throw new IllegalArgumentException("isolation level is null");
          this.level = level;
          this.scope = scope;
      }
  
      /**
       * @retern null means scope undefined
       */
      public VariableScope getScope() {
          return scope;
      }
  
      public IsolationLevel getLevel() {
          return level;
      }
  
      @Override
      public void accept(SQLASTVisitor visitor) {
          visitor.visit(this);
      }
  }
  