libdbi NEWS file
================

$Id: NEWS,v 1.5 2007/02/20 00:55:46 mhoenicka Exp $

__________________________________________________________
libdbi 0.8.2 (the "Sunday Night Buttermilk Waltz" release)

Minor enhancements:

- the TIME and DATETIME types now support a numeric timezone suffix,
  like in "23:12:30+01:00"
- improved error handling and error reporting code
- some memory leaks were plugged
- the "--disable-docs" configure switch now allows to build libdbi
  without having the sgml toolchain installed


___________________________________________
libdbi 0.8.1 (the "Get used to it" release)

This is a bugfix release. It fixes the following bug:

- dbi_result_get_string_idx() and dbi_result_get_string() returned
  NULL if the database returned an empty string. However, ''!= NULL in
  SQL. Now the functions correctly return a pointer to an
  empty string if the database returns an empty string, and NULL if the
  database returns NULL. The functions
  dbi_result_get_string_copy_idx() and dbi_result_get_string_copy() were
  not affected by this bug.


_______________________________________________
libdbi 0.8.0 (the "When I come around" release)

Major internal fixes. Remember that the integer type changes are
mostly silent on 32bit platforms, but you should check in detail. The
changes in the return codes of some functions require particular
attention.


- Functions that return string sizes or accept string sizes as an
argument now use size_t throughout. Affected functions are:

dbi_driver_quote_string()
dbi_driver_quote_string_copy()
dbi_conn_query_null()
dbi_result_get_field_length()
dbi_result_get_field_length_idx()
dbi_result_get_field_size()
dbi_result_get_field_size_idx()

as well as the new dbi_conn_quote_* functions


- Functions that deal with field indexes or field counts now use
unsigned int throughout. Affected functions are:

dbi_result_get_field_idx()
dbi_result_get_field_name()
dbi_result_get_numfields()
dbi_result_get_field_type_idx()
dbi_result_get_field_attrib_idx()
dbi_result_get_field_attribs_idx()
dbi_result_field_is_null_idx()
dbi_result_get_fields()
dbi_result_bind_fields()
dbi_result_get_char_idx()
dbi_result_get_uchar_idx()
dbi_result_get_short_idx()
dbi_result_get_ushort_idx()
dbi_result_get_long_idx()
dbi_result_get_int_idx()
dbi_result_get_uint_idx()
dbi_result_get_ulong_idx()
dbi_result_get_longlong_idx()
dbi_result_get_ulonglong_idx()
dbi_result_get_float_idx()
dbi_result_get_double_idx()
dbi_result_get_string_idx()
dbi_result_get_binary_idx()
dbi_result_get_string_copy_idx()
dbi_result_get_binary_copy_idx()
dbi_result_get_datetime_idx()


- Functions that get or bind 4-byte integers were renamed and their
return type was changed from long to int, because long is an 8byte
value on 64bit platforms. The old versions are still around, but they
also use int as the return type.

long dbi_result_get_long() -> int dbi_result_get_int()
long dbi_result_get_ulong() -> int dbi_result_get_uint()
long dbi_result_get_long_idx() -> int dbi_result_get_int_idx()
long dbi_result_get_ulong_idx() -> int dbi_result_get_uint_idx()
dbi_result_bind_long() -> dbi_result_bind_int()
dbi_result_bind_ulong() -> dbi_result_bind_uint()


- Field attributes are now implemented using unsigned int instead of
unsigned long. Functions that deal with attributes were adapted
accordingly:

dbi_result_get_field_attrib()
dbi_result_get_field_attrib_idx()
dbi_result_get_field_attribs()
dbi_result_get_field_attribs_idx()


- The return values in case of an error were changed in the following
functions:

dbi_result_get_field_length(): DBI_LENGTH_ERROR instead of 0
dbi_driver_quote_string(), dbi_driver_quote_string_copy(): 0 instead
  of -1 
dbi_result_seek_row(): 0 instead of (0 or -1)
dbi_result_get_numrows(): DBI_ROW_ERROR instead of 0
dbi_result_get_field_length(), dbi_result_get_field_length_idx(),
  dbi_result_get_field_size(), dbi_result_get_field_size_idx():
  DBI_LENGTH_ERROR instead of 0
dbi_result_get_field_type(),dbi_result_get_field_type_idx():
  DBI_TYPE_ERROR instead of 0 (the same numerical value!)
dbi_result_get_field_attrib(), dbi_result_get_field_attrib_idx(),
  dbi_result_get_field_attribs(), dbi_result_get_field_attribs_idx():
  DBI_ATTRIBUTE_ERROR instead of 0
dbi_result_field_is_null(), dbi_result_field_is_null_idx():
  DBI_FIELD_FLAG_ERROR instead of 0
dbi_result_bind_fields(): DBI_FIELD_ERROR instead of -1
dbi_result_bind_*(): DBI_BIND_ERROR instead of -1 (same numerical
  value!)


- New functions were added to improve the support for character
encodings:

dbi_conn_quote_string()
dbi_conn_quote_string_copy()
dbi_driver_encoding_to_iana()
dbi_driver_encoding_from_iana()


- A new function was added to improve support for binary strings:

dbi_conn_quote_binary_copy()

- Two functions were added to retrieve the version number of the
database engine:
dbi_conn_get_engine_version()
dbi_conn_get_engine_version_string()

- The following functions were labelled "deprecated". They are still
implemented in the current version, but you should use their
replacements as these functions are likely to be dropped in a future
release:

dbi_result_get_field_size() -> dbi_result_get_field_length()
dbi_result_get_field_size_idx() -> dbi_result_get_field_length_idx()
dbi_result_get_long() -> dbi_result_get_int()
dbi_result_get_ulong() -> dbi_result_get_uint()
dbi_result_get_long_idx() -> dbi_result_get_int_idx()
dbi_result_get_ulong_idx() -> dbi_result_get_uint_idx()
dbi_result_bind_long() -> dbi_result_bind_int()
dbi_result_bind_ulong() -> dbi_result_bind_uint()

