0.14.1

• Support _ separators when serializing strings to "Float16, Float32, Float64", and "Decimal128"
• Allow to build bools from integers. Nonzero integers are mapped to true
• Allow to deserialize "Float16", "Float32", "Float64", "Decimal128" to string
• Allow to deserialize tuples and bytes from FixedSizeList
• Allow to deserialize bytes from List arrays

0.14.0

• Add arrow=58 support
• Performance improvements:
  • Avoid unnecessary allocations in serialization
  • Reserve elements up front
• Breaking change: refactored error handling
  • Turn Error into a struct
  • Expand ErrorKind with the variants MissingField, NullabilityViolation
  • Remove Error::custom in favor of Error::new
  • Remove Error::custom_from in favor of Error::new_from
• Improved error reporting in serialization:
  • The field and data type is now reported more consistently across builders
• More consistent handling of the serde data model in serialization:
  • Tuple variants, tuple structs can be used where tuples could be used
  • Treat newtype variants as transparent wrappers
  • Struct variants can be used where structs could be used
  • Support tuples, tuple, structs, tuple variants, bytes for FixedSizeList
  • Allow to serialize sequences for structs, similar to tuples
• Add options to consume the builder, ArrayBuilder::into_arrow, ArrayBuilder::into_record_batch, ArrayBuilder::into_marrow, that avoid additional allocations for metadata
• Refactored internals: all serializers now directly implement serde::Serializer instead of a custom trait.

0.14.0-rc.1

This release refactors the implementation for serialization. All serializers now directly implement serde::Serializer instead of a custom trait. There are no breaking changes to the public interface, except for a polish of error messages.

• Performance improvements:
  • Avoid unncessary allocations in serialization
  • Reserve elements up front
• Improved error reporting in serialization:
  • The field and data type is now reported more consistently across builders
• More consistent handling of the serde data model in serialization:
  • Tuple variants, tuple structs can be used where tuples could be used
  • Treat newtype variants as transparents wrappers
  • Struct variants can be used where structs could be used
  • Support tuples, tuple, structs, tuple variants, bytes for FixedSizeList
  • Allow to serialize sequences for structs, similar to tuples
• Add options to consume the builder ArrayBuilder::into_arrow, ArrayBuilder::into_record_batch, ArrayBuilder::into_marrow that avoid additional allocations for metadata

0.13.7

• @lonless9: Add 57 support + Release 0.13.7 (#287)

0.13.6

• @jpopesculian added the option bytes_as_large_binary to TracingOptions (#282)
• @jpopesculian added support to serialize strings as bytes (#281)

0.13.5

• Add arrow=56 support

0.13.4

• Allow dictionaries with nullable values to be deserialized, if all values are valid

Thanks

The following people contributed to this release:

• @ryzhyk improved the null checks in dictionary deserialization (#277)

0.13.3

• Fix: Use the correct lower bound for marrow to enable arrow=55

0.13.2

• Add arrow=55 support
• Allow primitive to string conversion (#272)
  • Adds the option allow_to_string to TracerOptions to allow numbers, booleans and chars to coerce to strings (false by default)
  • Allows for numbers, booleans and chars to be serialized to strings

Thanks

The following people contributed to this release:

• @jpopesculian added support for serializing primitives to string (#272)

0.13.1

• Allow to use enums / unions in nullable structs. The arrow format requires that each child field of a null struct value contains a dummy value. For union fields such dummy values were not supported before. With this release the following dummy values for unions are used:
  • For unions, the first variant is used as a dummy
  • For dictionary encoded strings, the first non-null value is used as a dummy value or an empty string if no values are encountered

Thanks

The following people contributed to this release:

• @bartek358 discovered that unions in nullable structs are not supported and fixed the implementation in (#265)