Package co.cask.cdap.proto

Examples of co.cask.cdap.proto.ColumnDesc

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  protected List<ColumnDesc> getResultSchemaInternal(OperationHandle operationHandle) throws SQLException {
    ImmutableList.Builder<ColumnDesc> listBuilder = ImmutableList.builder();
    if (operationHandle.hasResultSet()) {
      TableSchema tableSchema = cliService.getResultSetMetadata(operationHandle);
      for (ColumnDescriptor colDesc : tableSchema.getColumnDescriptors()) {
        listBuilder.add(new ColumnDesc(colDesc.getName(), colDesc.getTypeName(),
                                       colDesc.getOrdinalPosition(), colDesc.getComment()));
      }
    }
    return listBuilder.build();
  }
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    if (status.hasResults()) {
      List<ColumnDesc> schema = queryClient.getSchema(queryHandle);
      String[] header = new String[schema.size()];
      for (int i = 0; i < header.length; i++) {
        ColumnDesc column = schema.get(i);
        // Hive columns start at 1
        int index = column.getPosition() - 1;
        header[index] = column.getName() + ": " + column.getType();
      }
      List<QueryResult> results = queryClient.getResults(queryHandle, 20);

      new AsciiTable<QueryResult>(header, results, new RowMaker<QueryResult>() {
        @Override
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      throw new SQLException("Resultset is closed");
    }
    ImmutableList.Builder builder = ImmutableList.builder();
    for (int i = 0; i < schema.size(); i++) {
      ImmutablePair<String, String> pair = schema.get(i);
      builder.add(new ColumnDesc(pair.getFirst(), pair.getSecond(), i + 1, ""));
    }
    return new ExploreResultSetMetaData(builder.build());
  }
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    return columnDescs.size();
  }

  @Override
  public int getColumnType(int column) throws SQLException {
    ColumnDesc desc = getColumnDesc(column);
    return JdbcColumn.hiveTypeToSqlType(desc.getType());
  }
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    return JdbcColumn.hiveTypeToSqlType(desc.getType());
  }

  @Override
  public String getColumnTypeName(int column) throws SQLException {
    ColumnDesc desc = getColumnDesc(column);
    return JdbcColumn.getColumnTypeName(desc.getType());
  }
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    return JdbcColumn.columnClassName(columnType);
  }

  @Override
  public String getColumnName(int column) throws SQLException {
    ColumnDesc desc = getColumnDesc(column);
    return desc.getName();
  }
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  @Override
  public boolean isCaseSensitive(int column) throws SQLException {
    // Content of a column is case sensitive only if it is a string
    // This includes maps, arrays and structs, since they are passed as json
    ColumnDesc desc = getColumnDesc(column);
    if ("string".equalsIgnoreCase(desc.getType())) {
      return true;
    }
    return false;
  }
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Related Classes of co.cask.cdap.proto.ColumnDesc

  • co.cask.cdap.explore.jdbc.ExploreResultSetMetaData
  • co.cask.cdap.explore.jdbc.StaticEmptyExploreResultSet
  • co.cask.cdap.explore.service.hive.BaseHiveExploreService
  • co.cask.cdap.shell.command.ExecuteQueryCommand
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