CsvSchema class
Defines constraints for CSV table validation.
Constructors
-
CsvSchema({required List<
CsvColumnDef> columns, bool allowExtraColumns = true, bool allowMissingColumns = false}) -
Creates a schema from
columns.const -
CsvSchema.infer(List<
String> headers, List<List> rows) -
Infer a schema from observed headers and data.
factory
Properties
- allowExtraColumns → bool
-
Whether extra columns (not in schema) are allowed.
final
- allowMissingColumns → bool
-
Whether fewer columns than defined are allowed.
final
-
columns
→ List<
CsvColumnDef> -
Column definitions.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
coerce(
List< String> headers, List<List> rows) → List<List> - Coerce each column's values to its declared CsvColumnDef.type, returning freshly built rows (the input is left untouched).
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
-
validate(
List< String> headers, List<List> rows) → List<CsvValidationException> - Validate rows against this schema. Returns list of violations.
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited