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https://issues.apache.org/jira/browse/PDFBOX-2834?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andreas Lehmkühler resolved PDFBOX-2834.
----------------------------------------
Resolution: Fixed
I've changed the method as proposed by [~tilman].
Thanks for the report
> Violation in PDOutputIntent.getDestOutputProfile() method
> ---------------------------------------------------------
>
> Key: PDFBOX-2834
> URL: https://issues.apache.org/jira/browse/PDFBOX-2834
> Project: PDFBox
> Issue Type: Bug
> Components: PDModel
> Affects Versions: 2.0.0
> Environment: Windows 7, jdk 1.7.0_51
> Reporter: Evgeniy Muravitskiy
> Assignee: Andreas Lehmkühler
> Fix For: 2.0.0
>
> Attachments: OutputIntentTest.pdf
>
>
> Inside this method an Object (the result of
> dictionary.getItem(COSName.DEST_OUTPUT_PROFILE) method call) is casted to
> COSStream, but it can be also a COSObject containing COSStream which leads to
> class cast exception.
> {code}
> public COSStream getDestOutputIntent()
> {
> return (COSStream) dictionary.getItem(COSName.DEST_OUTPUT_PROFILE);
> }
> {code}
> Possible solutions :
> 1) Check class instance and handle them in proper way*
> 2) Usage of visitor pattern
> *{code}
> public COSStream getDestOutputIntent()
> {
> final COSBase item = dictionary.getItem(COSName.DEST_OUTPUT_PROFILE);
> return getDestOutputIntent(item);
> }
> private COSStream getDestOutputIntent(COSBase object) {
> if (object instanceof COSStream) {
> return (COSStream) object;
> } else if (object instanceof COSObject) {
> return getDestOutputIntent(((COSObject) object).getObject());
> } else {
> return null;
> }
> }
> {code}
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