Function useExecuteCsvQuery

useExecuteCsvQuery(...args): CsvQueryState

React hook that executes a CSV data query. Similar to useExecuteQuery, but returns the data in CSV format as text or as a stream.

Parameters

Parameter	Type
...`args`	[`ExecuteCsvQueryParams`]

Returns

CsvQueryState

Query state that contains the status of the query execution, the result data, or the error if any occurred

Example

An example of using the hook to obtain data in a CSV string:

const { data, isLoading, isError } = useExecuteCsvQuery({
  dataSource: DM.DataSource,
  dimensions: [DM.Commerce.AgeRange],
  measures: [measureFactory.sum(DM.Commerce.Revenue)],
  filters: [filterFactory.greaterThan(DM.Commerce.Revenue, 1000)],
});
if (isLoading) {
  return <div>Loading...</div>;
}
if (isError) {
  return <div>Error</div>;
}
if (data) {
  return <div>{`CSV as string: ${data}`}</div>;
}
return null;

An example of using the hook to obtain data in CSV format as a stream, translating headers, and triggering file download:

const { data, isLoading, isError } = useExecuteCsvQuery({
  dataSource: DM.DataSource,
  dimensions: [DM.Commerce.AgeRange],
  measures: [measureFactory.sum(DM.Commerce.Revenue)],
  filters: [filterFactory.greaterThan(DM.Commerce.Revenue, 1000)],
  config: { asDataStream: true },
});
if (isLoading) {
  return <div>Loading...</div>;
}
if (isError) {
  return <div>Error</div>;
}
if (data) {
  const reader = new FileReader();
  reader.onload = () => {
    if (reader.result) {
      const text = reader.result as string;
      const lines = text.split('\n');
      // Update headers
      if (lines.length > 0) {
        lines[0] = translateHeaders(lines[0]); // replace with own implementation
      }
      // Join modified lines back to a text
      const modifiedCsv = lines.join('\n');
      // Create a new Blob with modified content
      const modifiedBlob = new Blob([modifiedCsv], { type: 'text/csv' });
      // Trigger file download
      const blobURL = window.URL.createObjectURL(modifiedBlob);
      const a = document.createElement('a');
      a.href = blobURL;
      const fileName = 'data_translated_headers'
      a.download = fileName;
      document.body.appendChild(a);
      a.click();
      window.URL.revokeObjectURL(blobURL);
      document.body.removeChild(a);
    }
  };
  reader.readAsText(data as Blob);
}
return null;