public static SeQueryInfo parse(ISession session, PlainSelect select)
      throws SeException, IOException {
    String[] columns = null;
    String[] tables = null;
    String where = null;
    String orderAndOrGroupByClause = null;

    if (LOGGER.isLoggable(Level.FINER)) {
      LOGGER.finer("building SeQueryInfo to reflect " + select);
    }

    // obtain needed SeQueryInfo components

    columns = getColumns(session, select.getSelectItems());
    tables = getTables(select.getFromItems());

    Expression whereClause = select.getWhere();
    if (whereClause != null) {
      where = whereClause.toString();
    }

    if (select.getGroupByColumnReferences() != null
        && select.getGroupByColumnReferences().size() > 0) {
      String gb = PlainSelect.getFormatedList(select.getGroupByColumnReferences(), " GROUP BY ");
      orderAndOrGroupByClause = gb;
    }
    if (select.getOrderByElements() != null && select.getOrderByElements().size() > 0) {
      String ob = PlainSelect.orderByToString(select.getOrderByElements());
      if (orderAndOrGroupByClause == null) {
        orderAndOrGroupByClause = "";
      }
      orderAndOrGroupByClause += " " + ob;
    }

    // build SeQueryInfo
    SeQueryInfo qinfo = new SeQueryInfo();
    qinfo.setColumns(columns);

    SeSqlConstruct sqlConstruct = new SeSqlConstruct();
    sqlConstruct.setTables(tables);
    if (where != null) {
      sqlConstruct.setWhere(where);
    }

    qinfo.setConstruct(sqlConstruct);

    if (orderAndOrGroupByClause != null) {
      qinfo.setByClause(orderAndOrGroupByClause);
    }

    return qinfo;
  }
  public void testGroupBy() throws JSQLParserException {
    String statement = "SELECT * FROM tab1 WHERE a > 34 GROUP BY tab1.b";
    PlainSelect plainSelect =
        (PlainSelect) ((Select) parserManager.parse(new StringReader(statement))).getSelectBody();
    assertEquals(1, plainSelect.getGroupByColumnReferences().size());
    assertEquals(
        "tab1.b", ((Column) plainSelect.getGroupByColumnReferences().get(0)).getWholeColumnName());
    assertEquals(statement, "" + plainSelect);

    statement = "SELECT * FROM tab1 WHERE a > 34 GROUP BY 2, 3";
    plainSelect =
        (PlainSelect) ((Select) parserManager.parse(new StringReader(statement))).getSelectBody();
    assertEquals(2, plainSelect.getGroupByColumnReferences().size());
    assertEquals(2, ((ColumnIndex) plainSelect.getGroupByColumnReferences().get(0)).getIndex());
    assertEquals(3, ((ColumnIndex) plainSelect.getGroupByColumnReferences().get(1)).getIndex());
    assertEquals(statement, "" + plainSelect);
  }
 @SuppressWarnings("unchecked")
 @Override
 public void visit(PlainSelect select) {
   if (!CollectionUtils.isEmpty(select.getGroupByColumnReferences())
       || !CollectionUtils.isEmpty(select.getJoins())) {
     isSimple = false;
   } else {
     select.getFromItem().accept(this);
     for (SelectItem item : (List<SelectItem>) select.getSelectItems()) {
       item.accept(this);
     }
   }
 }
示例#4
0
  /** @brief The following functions override functions of the interfaces. */
  public void visit(PlainSelect plainSelect) throws Exception {
    if (plainSelect.getFromItem() != null) {
      if (plainSelect.getFromItem().getAlias() != null) {
        this.aliasTableNameList.add(plainSelect.getFromItem().getAlias().getName());
      }
      plainSelect.getFromItem().accept(this);
    }

    if (plainSelect.getJoins() != null) {
      for (Iterator joinsIt = plainSelect.getJoins().iterator(); joinsIt.hasNext(); ) {
        Join join = (Join) joinsIt.next();
        if (join.getRightItem().getAlias() != null) {
          this.aliasTableNameList.add(join.getRightItem().getAlias().getName());
        }
        if (join.getOnExpression() != null) {
          join.getOnExpression().accept(this);
        }
        join.getRightItem().accept(this);
      }
    }

    // Select selectItem From fromItem, joinItem Where whereClause.
    if (plainSelect.getSelectItems() != null) {
      for (SelectItem selectItem : plainSelect.getSelectItems()) {
        selectItem.accept(this);
      }
    }

    if (plainSelect.getWhere() != null) {
      plainSelect.getWhere().accept(this);
    }

    if (plainSelect.getGroupByColumnReferences() != null) {
      for (Iterator groupByIt = plainSelect.getGroupByColumnReferences().iterator();
          groupByIt.hasNext(); ) {
        Expression groupBy = (Expression) groupByIt.next();
        groupBy.accept(this);
      }
    }

    if (plainSelect.getClusterByElements() != null) {
      for (Iterator clusterByit = plainSelect.getClusterByElements().iterator();
          clusterByit.hasNext(); ) {
        ClusterByElement clusterByElement = (ClusterByElement) clusterByit.next();
        visit(clusterByElement);
      }
    }

    if (plainSelect.getDistributeByElements() != null) {
      for (Iterator distributeByIt = plainSelect.getDistributeByElements().iterator();
          distributeByIt.hasNext(); ) {
        DistributeByElement distributeByElement = (DistributeByElement) distributeByIt.next();
        visit(distributeByElement);
      }
    }

    if (plainSelect.getOrderByElements() != null) {
      for (Iterator orderByIt = plainSelect.getOrderByElements().iterator();
          orderByIt.hasNext(); ) {
        OrderByElement orderByElement = (OrderByElement) orderByIt.next();
        orderByElement.accept(this);
      }
    }

    if (plainSelect.getSortByElements() != null) {
      for (Iterator sortByIt = plainSelect.getSortByElements().iterator(); sortByIt.hasNext(); ) {
        SortByElement sortByElement = (SortByElement) sortByIt.next();
        visit(sortByElement);
      }
    }

    if (plainSelect.getHaving() != null) {
      plainSelect.getHaving().accept(this);
    }
  }