content: /*
   * 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.bvt.sql.oracle.select;
  
  import com.alibaba.druid.sql.OracleTest;
  import com.alibaba.druid.sql.SQLUtils;
  import com.alibaba.druid.sql.ast.SQLStatement;
  import com.alibaba.druid.sql.ast.expr.SQLAggregateExpr;
  import com.alibaba.druid.sql.ast.expr.SQLMethodInvokeExpr;
  import com.alibaba.druid.sql.ast.statement.SQLSelectQueryBlock;
  import com.alibaba.druid.sql.ast.statement.SQLSelectStatement;
  import com.alibaba.druid.sql.dialect.oracle.parser.OracleStatementParser;
  import com.alibaba.druid.sql.dialect.oracle.visitor.OracleSchemaStatVisitor;
  
  import java.util.List;
  
  public class OracleSelectTest97_wmsys_wmconat extends OracleTest {
      public void test_0() throws Exception {
          String sql = //
                  "SELECT NVL(TO_CHAR(WMSYS.WM_CONCAT(NVL(O.CHILD_ITEM_CODE, O.ITEM_CODE))), ?)\n" +
                          "FROM ECC_CPR.CCG_GTS_OSG3A_V O\n" +
                          "WHERE O.ENABLED_FLAG = ?\n" +
                          "\tAND NVL(O.PRICE, ?) = ?\n" +
                          "\tAND O.CONTRACT_HEADER_ID = :B1";
  
          System.out.println(sql);
  
          OracleStatementParser parser = new OracleStatementParser(sql);
          List<SQLStatement> statementList = parser.parseStatementList();
          SQLSelectStatement stmt = (SQLSelectStatement) statementList.get(0);
          System.out.println(stmt.toString());
  
          assertEquals(1, statementList.size());
  
          SQLMethodInvokeExpr expr = (SQLMethodInvokeExpr) stmt.getSelect().getQueryBlock().getSelectList().get(0).getExpr();
          SQLMethodInvokeExpr param0 = (SQLMethodInvokeExpr) expr.getArguments().get(0);
          assertTrue(param0.getArguments().get(0)
                  instanceof SQLAggregateExpr);
  
          OracleSchemaStatVisitor visitor = new OracleSchemaStatVisitor();
          stmt.accept(visitor);
  
          {
              String text = SQLUtils.toOracleString(stmt);
  
              assertEquals("SELECT NVL(TO_CHAR(WMSYS.WM_CONCAT(NVL(O.CHILD_ITEM_CODE, O.ITEM_CODE))), ?)\n" +
                      "FROM ECC_CPR.CCG_GTS_OSG3A_V O\n" +
                      "WHERE O.ENABLED_FLAG = ?\n" +
                      "\tAND NVL(O.PRICE, ?) = ?\n" +
                      "\tAND O.CONTRACT_HEADER_ID = :B1", text);
          }
  
          System.out.println("Tables : " + visitor.getTables());
          System.out.println("fields : " + visitor.getColumns());
          System.out.println("coditions : " + visitor.getConditions());
          System.out.println("relationships : " + visitor.getRelationships());
          System.out.println("orderBy : " + visitor.getOrderByColumns());
  
          assertEquals(1, visitor.getTables().size());
          assertEquals(5, visitor.getColumns().size());
          assertEquals(2, visitor.getConditions().size());
          assertEquals(0, visitor.getRelationships().size());
          assertEquals(0, visitor.getOrderByColumns().size());
      }
  
      public void test_1() throws Exception {
          String sql = //
                  "SELECT NVL(TO_CHAR(WMSYS.WM_CONCAT(NVL(O.CHILD_ITEM_CODE, O.ITEM_CODE))), ?)\n" +
                          "FROM ECC_CPR.CCG_GTS_OSG3A_V O\n" +
                          "WHERE O.ENABLED_FLAG = ?\n" +
                          "\tAND NVL(O.PRICE, ?) = ?\n" +
                          "\tAND O.CONTRACT_HEADER_ID = :B1";
  
          System.out.println(sql);
  
          OracleStatementParser parser = new OracleStatementParser(sql);
          List<SQLStatement> statementList = parser.parseStatementList();
          SQLSelectStatement stmt = (SQLSelectStatement) statementList.get(0);
          System.out.println(stmt.toString());
  
          assertEquals(1, statementList.size());
  
          SQLSelectQueryBlock queryBlock = stmt.getSelect()
                  .getQueryBlock();
  
          SQLMethodInvokeExpr nvl = (SQLMethodInvokeExpr) queryBlock.getSelectList()
                  .get(0).getExpr();
          SQLMethodInvokeExpr toChar = (SQLMethodInvokeExpr) nvl.getArguments().get(0);
          assertTrue(toChar.getArguments().get(0) instanceof SQLAggregateExpr);
  
          OracleSchemaStatVisitor visitor = new OracleSchemaStatVisitor();
          stmt.accept(visitor);
  
          {
              String text = SQLUtils.toOracleString(stmt);
  
              assertEquals("SELECT NVL(TO_CHAR(WMSYS.WM_CONCAT(NVL(O.CHILD_ITEM_CODE, O.ITEM_CODE))), ?)\n" +
                      "FROM ECC_CPR.CCG_GTS_OSG3A_V O\n" +
                      "WHERE O.ENABLED_FLAG = ?\n" +
                      "\tAND NVL(O.PRICE, ?) = ?\n" +
                      "\tAND O.CONTRACT_HEADER_ID = :B1", text);
          }
  
          System.out.println("Tables : " + visitor.getTables());
          System.out.println("fields : " + visitor.getColumns());
          System.out.println("coditions : " + visitor.getConditions());
          System.out.println("relationships : " + visitor.getRelationships());
          System.out.println("orderBy : " + visitor.getOrderByColumns());
  
          assertEquals(1, visitor.getTables().size());
          assertEquals(5, visitor.getColumns().size());
          assertEquals(2, visitor.getConditions().size());
          assertEquals(0, visitor.getRelationships().size());
          assertEquals(0, visitor.getOrderByColumns().size());
      }
  }
  