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f1b7809a4521caaf20690101eae0c4ba8e83e234
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5 Commits

Author SHA1 Message Date
Joseph Doherty f1b7809a45 feat(etl): implement ColumnDropTransformer 
Add a data transformer that removes specified columns from the data stream.
Columns are matched by name (case-insensitive) and multiple columns can be
dropped in a single transformer. Includes comprehensive tests using NSubstitute
for mock IDataReader.
 2026-01-03 09:10:54 -05:00
Joseph Doherty 6e7bcadf68 feat(etl): implement TransformingDataReader and DataTransformerBase 
Add core transformer infrastructure for the ETL pipeline:
- DataTransformerBase: abstract base class with virtual methods for
  field count, names, types, values, ordinals, and null checking
- TransformingDataReader: IDataReader wrapper that delegates to
  transformer, enabling on-the-fly data transformations
 2026-01-03 09:08:17 -05:00
Joseph Doherty c644b578ba feat(etl): add CommonScripts factory for index and statistics scripts 2026-01-03 09:05:13 -05:00
Joseph Doherty 82573df023 feat(etl): implement SqlScriptRunner 
Add SqlScriptRunner class that implements IScriptRunner for executing
SQL scripts against the LotFinderDB cache database. Includes constructor
validation and configurable timeout support (default 1 hour).
 2026-01-03 09:03:14 -05:00
Joseph Doherty dac3d216fd feat(etl): add result models for pipeline execution 2026-01-03 08:58:06 -05:00