Package com.itextpdf.pdfa.checker

Class PdfA2Checker

java.lang.Object
com.itextpdf.pdfa.checker.PdfAChecker
com.itextpdf.pdfa.checker.PdfA1Checker
com.itextpdf.pdfa.checker.PdfA2Checker
Direct Known Subclasses:
PdfA3Checker
public class PdfA2Checker extends PdfA1Checker
PdfA2Checker defines the requirements of the PDF/A-2 standard and contains a number of methods that override the implementations of its superclass PdfA1Checker.

The specification implemented by this class is ISO 19005-2

  • Field Details

    • forbiddenAnnotations

      protected static final Set<PdfName> forbiddenAnnotations

    • apLessAnnotations

      protected static final Set<PdfName> apLessAnnotations

    • forbiddenActions

      protected static final Set<PdfName> forbiddenActions

    • allowedBlendModes

      protected static final Set<PdfName> allowedBlendModes

    • allowedFilters

      protected static final Set<PdfName> allowedFilters

    • allowedInlineImageFilters

      protected static final Set<PdfName> allowedInlineImageFilters

    • transparencyObjects

      protected Set<PdfObject> transparencyObjects

  • Constructor Details

    • PdfA2Checker

      public PdfA2Checker (PdfAConformanceLevel conformanceLevel)
      Creates a PdfA2Checker with the required conformance level
      Parameters:
      conformanceLevel - the required conformance level, a or u or b

  • Method Details

    • checkInlineImage

      public void checkInlineImage (PdfStream inlineImage, PdfDictionary currentColorSpaces)
      Description copied from class: PdfAChecker
      This method checks compliance with the inline image restrictions in the PDF/A specs, specifically filter parameters.
      Overrides:
      checkInlineImage in class PdfA1Checker
      Parameters:
      inlineImage - a PdfStream containing the inline image
      currentColorSpaces - a PdfDictionary containing the color spaces used in the document

    • checkColor

      public void checkColor (Color color, PdfDictionary currentColorSpaces, Boolean fill, PdfStream contentStream)
      Description copied from class: PdfAChecker
      This method checks compliance with the color restrictions imposed by the available color spaces in the document. This method will be abstract in update 7.2
      Overrides:
      checkColor in class PdfA1Checker
      Parameters:
      color - the color to check
      currentColorSpaces - a PdfDictionary containing the color spaces used in the document
      fill - whether the color is used for fill or stroke operations
      contentStream - current content stream

    • checkColorSpace

      public void checkColorSpace (PdfColorSpace colorSpace, PdfObject pdfObject, PdfDictionary currentColorSpaces, boolean checkAlternate, Boolean fill)
      This method performs a range of checks on the given color space, depending on the type and properties of that color space.
      Overrides:
      checkColorSpace in class PdfA1Checker
      Parameters:
      colorSpace - the color space to check
      pdfObject - the pdf object to check color space in
      currentColorSpaces - a PdfDictionary containing the color spaces used in the document
      checkAlternate - whether or not to also check the parent color space
      fill - whether the color space is used for fill or stroke operations

    • checkExtGState

      public void checkExtGState (CanvasGraphicsState extGState, PdfStream contentStream)
      Description copied from class: PdfAChecker
      Performs a number of checks on the graphics state, among others ISO 19005-1 section 6.2.8 and 6.4 and ISO 19005-2 section 6.2.5 and 6.2.10. This method will be abstract in the update 7.2
      Overrides:
      checkExtGState in class PdfA1Checker
      Parameters:
      extGState - the graphics state to be checked
      contentStream - current content stream

    • checkSignature

      public void checkSignature (PdfDictionary signatureDict)
      Description copied from class: PdfAChecker
      This method checks compliance of the signature dictionary
      Overrides:
      checkSignature in class PdfAChecker
      Parameters:
      signatureDict - a PdfDictionary containing the signature.

    • checkNumberOfDeviceNComponents

      protected void checkNumberOfDeviceNComponents (PdfSpecialCs.DeviceN deviceN)

    • checkNonSymbolicTrueTypeFont

      protected void checkNonSymbolicTrueTypeFont (PdfTrueTypeFont trueTypeFont)
      Description copied from class: PdfAChecker
      Verify the conformity of the non-symbolic TrueType font.
      Overrides:
      checkNonSymbolicTrueTypeFont in class PdfA1Checker
      Parameters:
      trueTypeFont - the PdfTrueTypeFont to check

    • getMaxRealValue

      protected double getMaxRealValue()
      Description copied from class: PdfA1Checker
      Retrieve maximum allowed real value.
      Overrides:
      getMaxRealValue in class PdfA1Checker
      Returns:
      maximum allowed real number

    • getMaxStringLength

      protected int getMaxStringLength()
      Description copied from class: PdfA1Checker
      Returns maximum allowed bytes length of the string in a PDF document.
      Overrides:
      getMaxStringLength in class PdfA1Checker
      Returns:
      maximum string length

    • checkPdfArray

      protected void checkPdfArray (PdfArray array)
      Description copied from class: PdfAChecker
      Verify the conformity of the PDF array.
      Overrides:
      checkPdfArray in class PdfA1Checker
      Parameters:
      array - the PdfArray to check

    • checkPdfDictionary

      protected void checkPdfDictionary (PdfDictionary dictionary)
      Description copied from class: PdfAChecker
      Verify the conformity of the PDF dictionary.
      Overrides:
      checkPdfDictionary in class PdfA1Checker
      Parameters:
      dictionary - the PdfDictionary to check

    • checkAnnotation

      protected void checkAnnotation (PdfDictionary annotDic)
      Verify the conformity of the annotation dictionary.
      Overrides:
      checkAnnotation in class PdfA1Checker
      Parameters:
      annotDic - the annotation PdfDictionary to be checked

    • getAppearanceLessAnnotations

      protected Set<PdfName> getAppearanceLessAnnotations()
      Gets annotation types which are allowed not to have appearance stream.
      Returns:
      set of annotation names.

    • checkAnnotationAgainstActions

      protected void checkAnnotationAgainstActions (PdfDictionary annotDic)
      Checked annotation against actions, exception will be thrown if either A or AA actions aren't allowed for specific type of annotation.
      Parameters:
      annotDic - an annotation PDF dictionary

    • getForbiddenAnnotations

      protected Set<PdfName> getForbiddenAnnotations()
      Gets forbidden annotation types.
      Overrides:
      getForbiddenAnnotations in class PdfA1Checker
      Returns:
      a set of forbidden annotation types

    • checkAppearanceStream

      protected void checkAppearanceStream (PdfStream appearanceStream)
      Description copied from class: PdfAChecker
      Check single annotation appearance stream.
      Overrides:
      checkAppearanceStream in class PdfAChecker
      Parameters:
      appearanceStream - the PdfStream to check

    • checkForm

      protected void checkForm (PdfDictionary form)
      Description copied from class: PdfAChecker
      Verify the conformity of the form dictionary.
      Overrides:
      checkForm in class PdfA1Checker
      Parameters:
      form - the form PdfDictionary to be checked

    • checkCatalogAAConformance

      protected void checkCatalogAAConformance (PdfDictionary dict)
      Checks if the catalog is compliant with the PDF/A-2 standard.
      Parameters:
      dict - the catalog dictionary

    • checkCatalogValidEntries

      protected void checkCatalogValidEntries (PdfDictionary catalogDict)
      Description copied from class: PdfAChecker
      Checks if entries in catalog dictionary are valid.
      Overrides:
      checkCatalogValidEntries in class PdfA1Checker
      Parameters:
      catalogDict - the catalog PdfDictionary to be checked

    • checkPageSize

      protected void checkPageSize (PdfDictionary page)
      Description copied from class: PdfAChecker
      Checks the allowable size of the page.
      Overrides:
      checkPageSize in class PdfA1Checker
      Parameters:
      page - the PdfDictionary of page which size being checked

    • checkFileSpec

      protected void checkFileSpec (PdfDictionary fileSpec)
      Description copied from class: PdfAChecker
      Verify the conformity of the file specification dictionary.
      Overrides:
      checkFileSpec in class PdfA1Checker
      Parameters:
      fileSpec - the PdfDictionary containing file specification to be checked

    • checkPdfStream

      protected void checkPdfStream (PdfStream stream)
      Description copied from class: PdfAChecker
      Verify the conformity of the PDF stream.
      Overrides:
      checkPdfStream in class PdfA1Checker
      Parameters:
      stream - the PdfStream to check

    • checkPageAAConformance

      protected void checkPageAAConformance (PdfDictionary dict)
      Checks if the page is compliant with the PDF/A-2 standard.
      Parameters:
      dict - the page dictionary

    • checkPageObject

      protected void checkPageObject (PdfDictionary pageDict, PdfDictionary pageResources)
      Description copied from class: PdfAChecker
      Verify the conformity of the page dictionary.
      Overrides:
      checkPageObject in class PdfA1Checker
      Parameters:
      pageDict - the PdfDictionary to check
      pageResources - the page's resources dictionary

    • checkPageTransparency

      protected void checkPageTransparency (PdfDictionary pageDict, PdfDictionary pageResources)
      Description copied from class: PdfAChecker
      Verify the conformity of the page transparency.
      Overrides:
      checkPageTransparency in class PdfA1Checker
      Parameters:
      pageDict - the PdfDictionary contains contents for transparency to be checked
      pageResources - the PdfDictionary contains resources for transparency to be checked

    • checkOutputIntents

      protected void checkOutputIntents (PdfDictionary catalog)
      Description copied from class: PdfAChecker
      Verify the conformity of the output intents array in the catalog dictionary.
      Overrides:
      checkOutputIntents in class PdfA1Checker
      Parameters:
      catalog - the PdfDictionary to check

    • getForbiddenActions

      protected Set<PdfName> getForbiddenActions()
      Description copied from class: PdfAChecker
      Retrieve forbidden actions in conforming document.
      Overrides:
      getForbiddenActions in class PdfA1Checker
      Returns:
      set of PdfName with forbidden actions

    • getAllowedNamedActions

      protected Set<PdfName> getAllowedNamedActions()
      Description copied from class: PdfAChecker
      Retrieve allowed actions in conforming document.
      Overrides:
      getAllowedNamedActions in class PdfA1Checker
      Returns:
      set of PdfName with allowed named actions

    • checkPageColorsUsages

      protected void checkPageColorsUsages (PdfDictionary pageDict, PdfDictionary pageResources)
      Verify the conformity of used color spaces on the page.
      Overrides:
      checkPageColorsUsages in class PdfA1Checker
      Parameters:
      pageDict - the PdfDictionary contains contents for colors to be checked.
      pageResources - the PdfDictionary contains resources for colors to be checked.

    • checkImage

      protected void checkImage (PdfStream image, PdfDictionary currentColorSpaces)
      Description copied from class: PdfAChecker
      Verify the conformity of the given image.
      Overrides:
      checkImage in class PdfA1Checker
      Parameters:
      image - the image to check
      currentColorSpaces - the PdfDictionary containing the color spaces used in the document

    • checkFontGlyphs

      public void checkFontGlyphs (PdfFont font, PdfStream contentStream)
      Description copied from class: PdfAChecker
      Performs a check of the each font glyph as a Form XObject. See ISO 19005-2 Annex A.5. This only applies to type 3 fonts. This method will be abstract in update 7.2
      Overrides:
      checkFontGlyphs in class PdfA1Checker
      Parameters:
      font - PdfFont to be checked
      contentStream - stream containing checked font

    • checkFormXObject

      @Deprecated protected void checkFormXObject (PdfStream form)
      Deprecated.
      For pdf/a-2+ checkers use the checkFormXObject(PdfStream form, PdfStream contentStream) method
      Overrides:
      checkFormXObject in class PdfA1Checker
      Parameters:
      form - the PdfStream to check

    • checkFormXObject

      protected void checkFormXObject (PdfStream form, PdfStream contentStream)
      Verify the conformity of the Form XObject with appropriate specification. Throws PdfAConformanceException if any discrepancy was found
      Parameters:
      form - the PdfStream to be checked
      contentStream - the PdfStream current content stream

    • checkTransparencyGroup

      protected void checkTransparencyGroup (PdfStream form, PdfStream contentStream)
      Verify the conformity of the transparency group XObject with appropriate specification. Throws PdfAConformanceException if any discrepancy was found
      Parameters:
      form - the PdfStream transparency group XObject.
      contentStream - the PdfStream current content stream

    • checkContentConfigurationDictAgainstAsKey

      protected void checkContentConfigurationDictAgainstAsKey (PdfDictionary config)
      Check optional content configuration dictionary against AS key.
      Parameters:
      config - a content configuration dictionary

    • getTransparencyErrorMessage

      protected String getTransparencyErrorMessage()
      Retrieve transparency error message valid for the pdf/a standard being used.
      Returns:
      error message.

    • checkBlendMode

      protected void checkBlendMode (PdfName blendMode)
      Check if blendMode is compatible with pdf/a standard being used.
      Parameters:
      blendMode - blend mode name to check.