Module profile_builder 

Shared conversion from StreamingColumnCollection / StreamingStatistics into ColumnProfile and quality-check sample maps.

All engines that need to produce a ColumnProfile should call build_column_profile instead of constructing one manually. This ensures consistent stats calculation and pattern detection.

Structs

ColumnProfileInput

Inputs that every engine can provide for centralized profile construction.

ExactNumericAggregates

Exact streaming aggregates for a numeric column: O(1)-memory statistics that an engine computed over the entire stream, as opposed to the bounded sample_values it retained.

TextLengths

Pre-computed text length stats from streaming/columnar engines.

Functions

build_column_profile

Build a ColumnProfile from engine-agnostic inputs.

infer_data_type_streaming

Infer DataType from StreamingStatistics sample values.

profile_from_stats

Convert a single column’s StreamingStatistics into a ColumnProfile.

profile_from_stats_with_hints

Convert a single column into a ColumnProfile while applying semantic hints.

profiles_from_streaming

Convert all columns in a StreamingColumnCollection into ColumnProfiles.

profiles_from_streaming_with_hints

Convert all columns into ColumnProfiles while applying semantic hints.

quality_check_samples

Build a sample HashMap from a StreamingColumnCollection suitable for QualityMetrics::calculate_from_data().