Author: tilman
Date: Tue Mar  6 21:03:37 2018
New Revision: 1826044

URL: http://svn.apache.org/viewvc?rev=1826044&view=rev
Log:
PDFBOX-4020: add comment + reformat

Modified:
    
pdfbox/branches/2.0/examples/src/main/java/org/apache/pdfbox/examples/signature/CreateEmbeddedTimeStamp.java

Modified: 
pdfbox/branches/2.0/examples/src/main/java/org/apache/pdfbox/examples/signature/CreateEmbeddedTimeStamp.java
URL: 
http://svn.apache.org/viewvc/pdfbox/branches/2.0/examples/src/main/java/org/apache/pdfbox/examples/signature/CreateEmbeddedTimeStamp.java?rev=1826044&r1=1826043&r2=1826044&view=diff
==============================================================================
--- 
pdfbox/branches/2.0/examples/src/main/java/org/apache/pdfbox/examples/signature/CreateEmbeddedTimeStamp.java
 (original)
+++ 
pdfbox/branches/2.0/examples/src/main/java/org/apache/pdfbox/examples/signature/CreateEmbeddedTimeStamp.java
 Tue Mar  6 21:03:37 2018
@@ -194,11 +194,15 @@ public class CreateEmbeddedTimeStamp
      * Extracts last Document-Signature from the document
      * 
      * @param document to get the Signature from
-     * @return the Signature, where a TimeStamp will be added. 
<code>null</code> when no Document-Signature available.
-     * @throws IOException
+     * 
+     * @return the Signature, where a TimeStamp will be added. 
<code>null</code> when no
+     * Document-Signature is available.
      */
     private void getRelevantSignature(PDDocument document) throws IOException
     {
+        // we can't use getLastSignatureDictionary() because this will fail 
(see PDFBOX-3978) 
+        // if a signature is assigned to a pre-defined empty signature field 
that isn't the last.
+        // we get the last in time by looking at the offset in the PDF file.
         SortedMap<Integer, PDSignature> sortedMap = new TreeMap<Integer, 
PDSignature>();
         for (PDSignature sig : document.getSignatureDictionaries())
         {


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