SawLocalDatasourceImpl class

Implementation of SawLocalDatasource that handles SAW algorithm operations.

This implementation supports:

• Automatic weight normalization
• Isolate-based processing for large datasets
• Performance profiling
• Comprehensive input validation

Example usage:

final datasource = SawLocalDatasourceImpl();

// Generate matrix
final matrix = await datasource.generateSawMatrix(
  listAlternative: alternatives,
  listCriteria: criteria,
);

// Calculate results
final results = await datasource.calculateSawResult(matrix: matrix);