/// <summary>
/// Get a Hit model from a kusto row.
/// </summary>
/// <param name="row">Kusto data row.</param>
/// <param name="query">QueryData containing query information.</param>
/// <param name="highlighter">Lucene Highligher.</param>
/// <returns>Hit model.</returns>
private static Hit ReadHit(DataRow row, QueryData query, LuceneHighlighter highlighter)
{
Ensure.IsNotNull(row, nameof(row));
var hit = HitsFactory.Create(Random.Next().ToString(), query.IndexName);
var columns = row.Table.Columns;
for (int columnIndex = 0; columnIndex < row.ItemArray.Length; columnIndex++)
{
var columnName = columns[columnIndex].ColumnName;
var columnValue = GetTypedValueFromColumn(columns[columnIndex], row[columnName]);
hit.AddSource(columnName, columnValue);
var highlightValue = highlighter.GetHighlightedValue(columnName, columnValue);
if (!string.IsNullOrEmpty(highlightValue))
{
hit.AddColumnHighlight(columnName, new List <string> {
highlightValue
});
}
}
CreateSort(hit, row, query);
CreateField(hit, row, query);
return(hit);
}
/// <summary>
/// Read Hits from KustoResponseDataSet response.
/// </summary>
/// <param name="kustoResponseDataSet">KustoResponseDataSet - Kusto parsed response.</param>
/// <param name="query">QueryData containing query information.</param>
/// <returns>IEnumerable.<Hit> - collection of hits.</returns>
public IEnumerable <Hit> ReadHits(KustoResponseDataSet kustoResponseDataSet, QueryData query)
{
Ensure.IsNotNull(kustoResponseDataSet, nameof(kustoResponseDataSet));
if (kustoResponseDataSet[HitsTableName] != null)
{
using var highlighter = new LuceneHighlighter(query, Logger);
return(HitsMapper.MapRowsToHits(kustoResponseDataSet[HitsTableName].TableData.Rows, query, highlighter));
}
return(Enumerable.Empty <Hit>());
}
private static IEnumerable <Hit> MapAndAnalyzeRows(DataRowCollection kustoResponseDataTable, QueryData query, LuceneHighlighter highlighter) => kustoResponseDataTable.OfType <DataRow>().Select(row => ReadHit(row, query, highlighter));
/// <summary>
/// Parses a kusto datatable to hits.
/// </summary>
/// <param name="kustoResponseDataTable">Kusto data rows.</param>
/// <param name="query">QueryData containing query information.</param>
/// <param name="highlighter">Lucene highlighter.</param>
/// <returns>Hits IEnumerable.</returns>
internal static IEnumerable <Hit> MapRowsToHits(DataRowCollection kustoResponseDataTable, QueryData query, LuceneHighlighter highlighter)
{
return(MapAndAnalyzeRows(kustoResponseDataTable, query, highlighter));
}
