Marcus Korinth created PDFBOX-5809:
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Summary: PDDocument#importPage slowed down by factor 1300
Key: PDFBOX-5809
URL: https://issues.apache.org/jira/browse/PDFBOX-5809
Project: PDFBox
Issue Type: Bug
Affects Versions: 3.0.2 PDFBox
Reporter: Marcus Korinth
We are using the *PDDocument#importPage* Method in our own splitter where we
split pages from a _SourceDocument_ to a _TargetDocument_. In order to do so we
first extract the page by using the following code:
{code:java}
final PDPage sourcePage = sourceDocument.getPage(pageNumber);
{code}
Immediatly afterwards we are calling:
{code:java}
final PDPage targetPage = targetDocument.importPage(sourcePage);
{code}
This approach worked just fine with *pdfbox 2.0.26*.
We decided to upgrade to version *3.0.2* since it takles a lot of the problems.
Unfortunately the *PDDocument#importPage* method slowed down by around 1300
times. In Version *2.0.26* it took 15ms in an average. With the latest *3.0.2*
it takes 20000 ms in average. That is a huge deal breaker as we usually have to
split documents which have several thousand pages.
Note: The same applies when using *PDDocument#addPage*.
Note: The problem does not appear in *3.0.1*. But we can't use that since it
has other major problems which breaks our application.
I have prepared an example document with which you can replicate the issue. Due
to the file size limitation I had to prepare a WeTransfer-Link for you:
https://we.tl/t-lfN2wz7cAs
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