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XML/Ada NEW FEATURES LIST
=========================
Copyright (C) 2001-2012, AdaCore
This file contains a list of new features introduced in XML/Ada.
A full description of all GPS features can be found in the XML/Ada
documentation.
An ISO date (YYYY-MM-DD) appears in parentheses after the
description line. This date shows the implementation date
of the feature.
Compatibility with previous releases
------------------------------------
This new release introduces a few changes to the API for schema
validation. In particular, the calls to Global_Check that were
previously needed in some cases to detect missing declarations in the
XSD files are no longer necessary.
The Set_Validating_Grammar and Set_Created_Grammar subprograms were
merged into Set_Grammar.
Get_Created_Grammar was renames to Get_Grammar.
In case of validation error, Parse raises the exception XML_Validation_Error
as before; the text of the error message is no longer retrieved through
Exception_Message (where GNAT limits its length), but through a new subprogram
Get_Error_Message.
Various optimizations were performed on the code (impacting all modules,
but especially the schema validation). They significantly reduce the number
of calls to malloc and memcpy by using a symbol table rather than access
to strings. These symbols are also made available to you through new
callbacks (Start_Element, End_Element,...) with different profiles. A new
tagged type Sax_Reader was added for that purpose. Existing code based on
Reader will still work, although it will be less efficient in most cases.
New features in version 4.0
---------------------------
NF-40-J818-003 Unicode: new exception Incomplete_Encoding (2010-08-31)
A new exception was defined in the unicode module. This exception is
used to distinguish between cases where we might simply be missing
some characters (and thus should wait for more) with cases where the
encoding is indeed invalid.
NF-40-J610-021 XML/Ada is compatible with pragma Ravenscar (2010-06-29)
XML/Ada is now compatible with the ravenscar profile
NF-40-J302-043 New exception XML_Not_Implemented (2010-03-24)
A new exception is raised when using a schema (.xsd) validator, and
the schema uses features that are not supported by XML/Ada.
Unsupported features are: xsd:key elements, IDREF and IDREFS types,
various forms of regexps, and redefine.
It is also possible to explicitly disable support for some features
to make sure the subset of Schema you use is fully supported by
XML/Ada and passes all relevant tests of the W3C testsuite
The W3C committee has reviewed the status of some of their schema
tests since their last release. Support was added to use this latest
version. See the README file for information on the setup.
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