[jira] [Created] (PDFBOX-3799) Problem in TextPosition's hashCode

["Miro Mannino (JIRA)" <ji...@apache.org>]

Miro Mannino created PDFBOX-3799:
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             Summary: Problem in TextPosition's hashCode
                 Key: PDFBOX-3799
                 URL: https://issues.apache.org/jira/browse/PDFBOX-3799
             Project: PDFBox
          Issue Type: Bug
          Components: Text extraction
    Affects Versions: 2.0.6
            Reporter: Miro Mannino


Just another side effect related to TextPosition's hashCode

I am using the hashCode because I want to know the color of each letter. To do this, during the processTextPosition, I save the current graphic state in a map, using the current text position as key. Then, on writeString, I iterate all the text positions and I get the color for each of them though this map.

Of course would be easier if this information could be saved in the text position. But this is just a desired feature.

I am discovering that from processTextPosition to writeString sometimes happens that the same textPosition has just a different unicode. In processTextPosition is just a "x" (char 120), but then on writeString the same textPosition the unicode is the x, followed by '̄' (char 772). Everything about the textPosition remains the same: same coordinates, same System.identityHashCode; the only thing that changes is the unicode, which causes the computation of a different hashCode.

That is giving problem. As workaround I am using now System.identityHashCode instead of the current TextPosition's implementation





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