Add custom property support to trans-unit and source attributes in XLIFF 1.2 and XLIFF 2.0

[Former user]

Adding custom property to trans-unit/source element. The following code seems to support that but the actual implementation seems to be missing.

TextUnit tUnit = new TextUnit(id, text);
tUnit.setName(name);
tUnit.setProperty(new Property("abc", "def"));
xliffWriter.writeTextUnit(tUnit);

[YvesS]

XLIFF 1.2 and 2.0 are separate cases as there is no support at all for XLIFF 2.0 with the current XLIFFWriter class in the main Okapi project.

Instead, there is a whole separate library that supports both the Metadata module and custom extensions (elements and attributes in a private namespace). The library offers writer and reader classes with which one can easily create, read and modify XLIFF 2.0 files.

• The XLIFF Toolkit: https://bitbucket.org/okapiframework/xliff-toolkit
• Creating a XLIFF 2.0 file: https://bitbucket.org/okapiframework/xliff-toolkit/wiki/Creating
• Metadata support: https://bitbucket.org/okapiframework/xliff-toolkit/wiki/Metadata

The main Okapi project has a simple XLIFF 2 filter that currently provides basic support for extraction/merge with ITextUnit. We should probably have in a separate helper class the functions to convert back and forth a ITextUnit to/from a Unit, to facilitate the use of the XLIFF 2 package with the main Okapi resources.