@grafana/data#Column TypeScript Examples

The following examples show how to use @grafana/data#Column. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: table_model.ts    From grafana-chinese with Apache License 2.0 6 votes vote down vote up 
// Returns true if both rows have matching non-empty fields as well as matching
// indexes where one field is empty and the other is not
function areRowsMatching(columns: Column[], row: any[], otherRow: any[]) {
  let foundFieldToMatch = false;
  for (let columnIndex = 0; columnIndex < columns.length; columnIndex++) {
    if (row[columnIndex] !== undefined && otherRow[columnIndex] !== undefined) {
      if (row[columnIndex] !== otherRow[columnIndex]) {
        return false;
      }
    } else if (row[columnIndex] === undefined || otherRow[columnIndex] === undefined) {
      foundFieldToMatch = true;
    }
  }
  return foundFieldToMatch;
}
Example #2
Source File: table_model.ts    From grafana-chinese with Apache License 2.0 5 votes vote down vote up 
addColumn(col: Column) {
    if (!this.columnMap[col.text]) {
      this.columns.push(col);
      this.columnMap[col.text] = col;
    }
  }
Example #3
Source File: transformers.ts    From grafana-chinese with Apache License 2.0 5 votes vote down vote up 
transformers['table'] = {
  description: 'Table',
  getColumns: data => {
    if (!data || data.length === 0) {
      return [];
    }

    // Single query returns data columns as is
    if (data.length === 1) {
      return [...data[0].columns];
    }

    const filteredData = tableDataFormatFilterer(data);

    // Track column indexes: name -> index
    const columnNames: any = {};

    // Union of all columns
    const columns = filteredData.reduce((acc: Column[], series: TableData) => {
      series.columns.forEach(col => {
        const { text } = col;
        if (columnNames[text] === undefined) {
          columnNames[text] = acc.length;
          acc.push(col);
        }
      });
      return acc;
    }, []);

    return columns;
  },
  transform: (data: any[], panel, model) => {
    if (!data || data.length === 0) {
      return;
    }
    const filteredData = tableDataFormatFilterer(data);
    const noTableIndex = _.findIndex(filteredData, d => 'columns' in d && 'rows' in d);
    if (noTableIndex < 0) {
      throw {
        message: `Result of query #${String.fromCharCode(
          65 + noTableIndex
        )} is not in table format, try using another transform.`,
      };
    }

    mergeTablesIntoModel(model, ...filteredData);
  },
};