Package eu.europa.esig.dss.pdf.modifications

Class DefaultPdfObjectModificationsFinder

java.lang.Object
eu.europa.esig.dss.pdf.modifications.DefaultPdfObjectModificationsFinder
All Implemented Interfaces:
PdfObjectModificationsFinder
public class DefaultPdfObjectModificationsFinder extends Object implements PdfObjectModificationsFinder
Default implementation used to find the differences between two provided PDF revisions.

  • Constructor Details

    • DefaultPdfObjectModificationsFinder

      public DefaultPdfObjectModificationsFinder()
      Default constructor instantiating object with default configuration

  • Method Details

    • setMaximumObjectVerificationDeepness

      public void setMaximumObjectVerificationDeepness(int maximumObjectVerificationDeepness)
      Sets the maximum objects verification deepness of enveloped objects to be compared.

      NOTE: In case of large PDFs, a too deep object nesting structure may lead to a StackOverflowError. This parameter is needed to prevent the Error. Please adjust the value in case you system may handle less or more recursion.

      Default: 500

      Parameters:
      maximumObjectVerificationDeepness - defining the maximum recursion deepness on objects analysis

    • setLaxNumericComparison

      public void setLaxNumericComparison(boolean laxNumericComparison)
      Sets whether an integer number shall be promoted to a real for comparison against a real number. Example: when enabled, numbers 612.0 and 612 would be considered as equal. If disabled, the numbers will not be considered as equivalent. Default: TRUE (integer number is promoted to real for comparison against real number)
      Parameters:
      laxNumericComparison - whether the integer number shall be promoted to a real for comparison against a real number

    • getPdfObjectModificationsFilter

      public PdfObjectModificationsFilter getPdfObjectModificationsFilter()
      Gets a PdfObjectModificationsFilter. If not set, creates a new instance.
      Returns:
      PdfObjectModificationsFilter

    • setPdfObjectModificationsFilter

      public void setPdfObjectModificationsFilter(PdfObjectModificationsFilter pdfObjectModificationsFilter)
      Sets the PdfObjectModificationsFilter used to categorize found differences between PDF objects.
      Parameters:
      pdfObjectModificationsFilter - PdfObjectModificationsFilter

    • find

      public PdfObjectModifications find(PdfDocumentReader originalRevisionReader, PdfDocumentReader finalRevisionReader)
      Description copied from interface: PdfObjectModificationsFinder
      Returns found and categorized object modifications occurred between originalRevisionReader and finalRevisionReader.
      Specified by:
      find in interface PdfObjectModificationsFinder
      Parameters:
      originalRevisionReader - PdfDocumentReader representing original (e.g. signed) PDF revision
      finalRevisionReader - PdfDocumentReader representing the final PDF document revision
      Returns:
      PdfObjectModifications found between two given revisions

    • find

      public PdfObjectModifications find(PdfDict originalRevisionDict, PdfDict finalRevisionDict)
      Returns found and categorized object differences between two provided PdfDict objects
      Parameters:
      originalRevisionDict - PdfDict representing dictionary extracted from original (e.g. signed) PDF revision
      finalRevisionDict - PdfDict representing dictionary extracted the final PDF document revision
      Returns:
      PdfObjectModifications found between two given PDF dictionaries