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https://issues.apache.org/jira/browse/TIKA-4466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18015200#comment-18015200
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Hudson commented on TIKA-4466:
------------------------------
SUCCESS: Integrated in Jenkins build Tika » tika-main-jdk17 #865 (See
[https://ci-builds.apache.org/job/Tika/job/tika-main-jdk17/865/])
TIKA-4466 -- allow multiple values for many DublinCore values (#2308) (github:
[https://github.com/apache/tika/commit/dc69e39e332adee20c54b7e8db040e4b771e8fdc])
* (edit) CHANGES.txt
* (edit)
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-miscoffice-module/src/test/java/org/apache/tika/parser/epub/EpubParserTest.java
* (edit) tika-xmp/src/test/java/org/apache/tika/xmp/TikaToXMPTest.java
* (add)
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-miscoffice-module/src/test/resources/test-documents/testEPUB_multi-metadata-vals.epub
* (edit) tika-core/src/main/java/org/apache/tika/metadata/DublinCore.java
* (edit)
tika-xmp/src/main/java/org/apache/tika/xmp/convert/AbstractConverter.java
* (edit)
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-xml-module/src/main/java/org/apache/tika/parser/xml/DcXMLParser.java
* (edit)
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-pdf-module/src/main/java/org/apache/tika/parser/pdf/PDMetadataExtractor.java
* (edit)
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-pdf-module/src/test/java/org/apache/tika/parser/pdf/PDFParserTest.java
> OPFParser: Only the last dc:identifier is parsed, while multiple are valid.
> ---------------------------------------------------------------------------
>
> Key: TIKA-4466
> URL: https://issues.apache.org/jira/browse/TIKA-4466
> Project: Tika
> Issue Type: Bug
> Components: parser
> Affects Versions: 3.2.2
> Reporter: Grigorii Ioffe
> Priority: Major
> Fix For: 4.0.0, 3.3.0
>
> Attachments: image-2025-08-15-10-35-10-476.png, test_file.epub
>
>
> I have an ePub file with metadata stored in an OPF file with multiple
> dc:identifier fields. But during its parsing OPFParser extracts only the last
> one.
> For example, if a OPF file inside ePub contains such entries of dc:identifier:
> {code:java}
> <dc:identifier>isbn:9780765350381</dc:identifier>
> <dc:identifier>mobi-asin:JD4PTHPBGIAQYZUBFUU3VFPVEUKY7S3U</dc:identifier>
> <dc:identifier>amazon:0765350386</dc:identifier>
> <dc:identifier>goodreads:243272</dc:identifier>
> <dc:identifier>calibre:55</dc:identifier>
> <dc:identifier>uuid:7dcb83b5-7364-4e29-9e5c-1d7b966a3595</dc:identifier>
> <dc:identifier
> id="uuid_id">uuid:7dcb83b5-7364-4e29-9e5c-1d7b966a3595</dc:identifier> {code}
> only uuid:7dcb83b5-7364-4e29-9e5c-1d7b966a3595 will be in parsed metadata.
> According to the Dublin Core spec it is a valid situation as identifier
> marked as repeatable:
> [https://www.w3.org/TR/epub-33/#sec-opf-dcidentifier]
> My investigation showed that the field is created with PropertyType.SIMPLE
> here:
> `org.apache.tika.metadata/DublinCore.class:60`
> as a result,
> `org.apache.tika.metadata/Property.class:272`
> returns false and therefore each entry overrides a value stored before
> instead of adding to an array.
>
> Also, this is not the only field with incorrect type definition. Looks like
> that Title, language, description and some others fields are also defined
> incorrectly (or at least parsed in OPFParser and DCXmlParcer incorrectly)
>
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