Re: [NTG-context] XMP metadata schema yields invalid PDF/A
On Fri, Feb 4, 2022 at 11:11 PM Karl Pettersson via ntg-context < ntg-context@ntg.nl> wrote: > On Fri, Feb 04, 2022 at 10:25:27PM +0100, Hans Hagen via ntg-context wrote: > > On 2/4/2022 7:29 PM, Karl Pettersson via ntg-context wrote: > > > Hi > > > > > > PDF/A files generated using ConTeXt fail validation with veraPDF, and > > > the reason seems to be that the dc:description metadata is defined with > > > the wrong type in the embedded XMP extension schema. > > > > > > > https://tex.stackexchange.com/questions/632380/generate-pdf-a-with-context > > > > > > https://github.com/veraPDF/veraPDF-library/issues/1224 > > > > > > I can reproduce the problem using TeX Live 2021 (MkIV 2021.03.05). The > > > definition seems to be controlled by this code. > > > > > > > https://source.contextgarden.net/tex/context/base/mkiv/lpdf-pua.xml?search=rdf#l81 > > so "dc:description" is not permitted? it is mentioned in > > > > > https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/elements/1.1/description > > > > (btw it never failed before) > > The description element is permitted, but the problem seems to be that > its valueType is defined as Text in the embedded schema, while the > metadata element in the PDF has an embedded xml:lang="x-default"> structure. > > > https://github.com/veraPDF/veraPDF-library/issues/1224#issuecomment-1029932963 > > (I suppose the reference to "title" in the issue comment should be > "description".) > > Validating with veraPDF <1.20 does not raise the error. The validation > seems to have changed for redefined types in that version. > > > https://github.com/veraPDF/veraPDF-library/blob/integration/RELEASENOTES.md#validation I am missing something here... true FOO makes a valid pdf 3a with verapdf 1.20.1. But dc:description is like dc:title, so where we are redefining dc:description as Text ? -- luigi ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___
Re: [NTG-context] XMP metadata schema yields invalid PDF/A
On Fri, Feb 04, 2022 at 10:25:27PM +0100, Hans Hagen via ntg-context wrote: > On 2/4/2022 7:29 PM, Karl Pettersson via ntg-context wrote: > > Hi > > > > PDF/A files generated using ConTeXt fail validation with veraPDF, and > > the reason seems to be that the dc:description metadata is defined with > > the wrong type in the embedded XMP extension schema. > > > > https://tex.stackexchange.com/questions/632380/generate-pdf-a-with-context > > > > https://github.com/veraPDF/veraPDF-library/issues/1224 > > > > I can reproduce the problem using TeX Live 2021 (MkIV 2021.03.05). The > > definition seems to be controlled by this code. > > > > https://source.contextgarden.net/tex/context/base/mkiv/lpdf-pua.xml?search=rdf#l81 > so "dc:description" is not permitted? it is mentioned in > > https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/elements/1.1/description > > (btw it never failed before) The description element is permitted, but the problem seems to be that its valueType is defined as Text in the embedded schema, while the metadata element in the PDF has an embedded structure. https://github.com/veraPDF/veraPDF-library/issues/1224#issuecomment-1029932963 (I suppose the reference to "title" in the issue comment should be "description".) Validating with veraPDF <1.20 does not raise the error. The validation seems to have changed for redefined types in that version. https://github.com/veraPDF/veraPDF-library/blob/integration/RELEASENOTES.md#validation > > Hans > > - > Hans Hagen | PRAGMA ADE > Ridderstraat 27 | 8061 GH Hasselt | The Netherlands >tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl > - > ___ > If your question is of interest to others as well, please add an entry to the > Wiki! > > maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context > webpage : http://www.pragma-ade.nl / http://context.aanhet.net > archive : https://bitbucket.org/phg/context-mirror/commits/ > wiki : http://contextgarden.net > ___ -- Karl Pettersson Uppsala, Sweden https://static-dust.klpn.se/ ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___
Re: [NTG-context] XMP metadata schema yields invalid PDF/A
On Fri, Feb 4, 2022 at 10:26 PM Hans Hagen via ntg-context < ntg-context@ntg.nl> wrote: > On 2/4/2022 7:29 PM, Karl Pettersson via ntg-context wrote: > > Hi > > > > PDF/A files generated using ConTeXt fail validation with veraPDF, and > > the reason seems to be that the dc:description metadata is defined with > > the wrong type in the embedded XMP extension schema. > > > > > https://tex.stackexchange.com/questions/632380/generate-pdf-a-with-context > > > > https://github.com/veraPDF/veraPDF-library/issues/1224 > > > > I can reproduce the problem using TeX Live 2021 (MkIV 2021.03.05). The > > definition seems to be controlled by this code. > > > > > https://source.contextgarden.net/tex/context/base/mkiv/lpdf-pua.xml?search=rdf#l81 > > so "dc:description" is not permitted? it is mentioned in > > > https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/elements/1.1/description > > and also in XMPSpecificationPart1.pdf https://github.com/adobe/XMP-Toolkit-SDK/tree/main/docs dc:description Language Alternative DCMI definition: An account of the resource. XMP addition: XMP usage is a list of textual descriptions of the content of the resource, given in various languages. -- luigi ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___
Re: [NTG-context] XMP metadata schema yields invalid PDF/A
On 2/4/2022 7:29 PM, Karl Pettersson via ntg-context wrote: Hi PDF/A files generated using ConTeXt fail validation with veraPDF, and the reason seems to be that the dc:description metadata is defined with the wrong type in the embedded XMP extension schema. https://tex.stackexchange.com/questions/632380/generate-pdf-a-with-context https://github.com/veraPDF/veraPDF-library/issues/1224 I can reproduce the problem using TeX Live 2021 (MkIV 2021.03.05). The definition seems to be controlled by this code. https://source.contextgarden.net/tex/context/base/mkiv/lpdf-pua.xml?search=rdf#l81 so "dc:description" is not permitted? it is mentioned in https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/elements/1.1/description (btw it never failed before) Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___
[NTG-context] XMP metadata schema yields invalid PDF/A
Hi PDF/A files generated using ConTeXt fail validation with veraPDF, and the reason seems to be that the dc:description metadata is defined with the wrong type in the embedded XMP extension schema. https://tex.stackexchange.com/questions/632380/generate-pdf-a-with-context https://github.com/veraPDF/veraPDF-library/issues/1224 I can reproduce the problem using TeX Live 2021 (MkIV 2021.03.05). The definition seems to be controlled by this code. https://source.contextgarden.net/tex/context/base/mkiv/lpdf-pua.xml?search=rdf#l81 Regards -- Karl Pettersson Uppsala, Sweden https://static-dust.klpn.se/ ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___
