This project is just to demonstrate tagging problems with tables in the PDF/UA-1 mode of FOP.
Content is:
- a minimal table as XSL-FO document: table.fo
- A FOP config with
PDF/UA-1mode inactive: config/fop-config.xml - A FOP config with
PDF/UA-1mode active: config/fop-config-ua.xml - A FOP config with
PDF/UA-1mode inactive but forcing PDF 1.4: config/fop-config14.xml - A GitHub workflow which calls FOP via Maven to generate PDFs from the
table.fo:- One PDF with the
fop-config.xml: out/table.pdf - One PDF with the
fop-config-ua.xml: out/table-ua.pdf - One PDF with the
fop-config14.xml: out/table14.pdf
- One PDF with the
- Screenshots from the logical structure view of the PAC of all results:
Comparing the screenshots makes the issue clear:
| Inacitve | Active | PDF 1.4 |
|---|---|---|
 |
 |
 |
You see that if the PDF/UA-1 mode is active the tagging of TBody, THead and TFoot are lost and the TFoot row is missplaced.
The reason for adding the PDF 1.4 version was, that PDF 1.4 knows only the tags Table, TR, TH and TD (See PDF 1.4 specification Table 9.22). With PDF 1.5 TBody, THead and TFoot was introduced (see PDF 1.5 specification Table 10.22).
Conclusion: FOP tags tables in PDF 1.4 style if PDF/UA-1 mode is active. If PDF/UA-1 mode is inactive it tags tables in PDF 1.5 style even if PDF 1.4 is generated.