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https://issues.apache.org/jira/browse/JENA-2270?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17486377#comment-17486377
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Martynas Jusevičius commented on JENA-2270:
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{{multipart/form-data}} is useful when multiple files are uploaded at once.
[GSP specifies it for
{{POST}}|https://www.w3.org/TR/sparql11-http-rdf-update/#http-post]:
{quote}When used with POST this operation MUST be understood as a request that
the origin server perform an RDF merge of the graphs - that the documents
submitted with the multipart form are a serialization of - into the RDF graph
content identified by the request or encoded IRI. In such a case, if the
{{Content-Type}} is not provided, implementations MAY attempt to determine it
from the file's extension rather than respond with {{400 Bad Request}}.{quote}
> Improve Fuseki data upload functionality.
> -----------------------------------------
>
> Key: JENA-2270
> URL: https://issues.apache.org/jira/browse/JENA-2270
> Project: Apache Jena
> Issue Type: Improvement
> Components: Fuseki
> Affects Versions: Jena 4.4.0
> Reporter: Andy Seaborne
> Assignee: Andy Seaborne
> Priority: Minor
>
> Continues JENA-2248.
> The upload code has become messy with duplication.
> Functionality for HTML file upload {{<input type="file">}} has a dependency
> on code using {{javax}}, and not {{jakarta}}.
> {{HTML_FileUpload}} is dated and it buffers its input.
> This is a step towards having the option to remove HTML file upload
> capability.
> A new general data uploader for sending data to a dataset will cover the
> functionality better.
> The only use of HTML file upload not covered is when the graph name is in the
> multipart content. This predates SPARQL Graph Store Protocol which is a
> better approach because the graph name is available at the start and so the
> data can transactionally stream to the right destination. HTML file upload
> can, in theory, supply the graph name after the data.
> The UI "add data" tab uses GSP style to load data.
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