content: /*
   * Copyright 1999-2018 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.bvt.sql.oceanbase;
  
  import com.alibaba.druid.DbType;
  import com.alibaba.druid.sql.MysqlTest;
  import com.alibaba.druid.sql.SQLUtils;
  import com.alibaba.druid.sql.ast.SQLStatement;
  import com.alibaba.druid.sql.visitor.SchemaStatVisitor;
  import com.alibaba.druid.util.JdbcConstants;
  
  import java.util.List;
  
  public class OceanbaseSelectTest extends MysqlTest {
      protected final DbType dbType = JdbcConstants.MYSQL;
  
      public void test_0() throws Exception {
          String sql = "SELECT EmpID, EmpName, MgrId, Level FROM emp START WITH MgrId IS NULL CONNECT BY PRIOR EmpId = MgrId";
  
          List<SQLStatement> stmtList = SQLUtils.parseStatements(sql, dbType);
          SQLStatement stmt = stmtList.get(0);
  
          {
              String result = SQLUtils.toSQLString(stmt, dbType);
              assertEquals("SELECT EmpID, EmpName, MgrId, Level\n" +
                      "FROM emp\n" +
                      "START WITH MgrId IS NULL\n" +
                      "CONNECT BY PRIOR EmpId = MgrId", result);
          }
          {
              String result = SQLUtils.toSQLString(stmt, dbType, SQLUtils.DEFAULT_LCASE_FORMAT_OPTION);
              assertEquals("select EmpID, EmpName, MgrId, Level\n" +
                      "from emp\n" +
                      "start with MgrId is null\n" +
                      "connect by prior EmpId = MgrId", result);
          }
  
          assertEquals(1, stmtList.size());
  
          SchemaStatVisitor visitor = SQLUtils.createSchemaStatVisitor(dbType);
          stmt.accept(visitor);
  
          System.out.println("Tables : " + visitor.getTables());
          System.out.println("fields : " + visitor.getColumns());
          System.out.println("coditions : " + visitor.getConditions());
          System.out.println("orderBy : " + visitor.getOrderByColumns());
  
          assertEquals(1, visitor.getTables().size());
          assertEquals(3, visitor.getColumns().size());
          assertEquals(3, visitor.getConditions().size());
  
          // assertTrue(visitor.getTables().containsKey(new TableStat.Name("t_basic_store")));
      }
  }
  