com.itextpdf.pdfa.checker

Class PdfA4Checker

java.lang.Object

com.itextpdf.pdfa.checker.PdfAChecker

com.itextpdf.pdfa.checker.PdfA1Checker

com.itextpdf.pdfa.checker.PdfA2Checker

com.itextpdf.pdfa.checker.PdfA3Checker

com.itextpdf.pdfa.checker.PdfA4Checker

public class PdfA4Checker
extends PdfA3Checker

PdfA4Checker defines the requirements of the PDF/A-4 standard and contains a number of methods that override the implementations of its superclass PdfA3Checker.

The specification implemented by this class is ISO 19005-4

Field Summary

Fields inherited from class com.itextpdf.pdfa.checker.PdfA3Checker

allowedAFRelationships

Fields inherited from class com.itextpdf.pdfa.checker.PdfA2Checker

allowedBlendModes, allowedFilters, allowedInlineImageFilters, forbiddenActions, forbiddenAnnotations, transparencyObjects

Fields inherited from class com.itextpdf.pdfa.checker.PdfA1Checker

allowedNamedActions, allowedRenderingIntents, contentAnnotations

Fields inherited from class com.itextpdf.pdfa.checker.PdfAChecker

checkedObjects, checkedObjectsColorspace, cmykIsUsed, cmykUsedObjects, conformanceLevel, grayIsUsed, grayUsedObjects, gsStackDepth, ICC_COLOR_SPACE_CMYK, ICC_COLOR_SPACE_GRAY, ICC_COLOR_SPACE_RGB, ICC_DEVICE_CLASS_MONITOR_PROFILE, ICC_DEVICE_CLASS_OUTPUT_PROFILE, maxGsStackDepth, pdfAOutputIntentColorSpace, pdfAOutputIntentDestProfile, rgbIsUsed, rgbUsedObjects

Constructor Summary

Constructors

Constructor and Description
PdfA4Checker(PdfAConformanceLevel conformanceLevel) Creates a PdfA4Checker with the required conformance level

Method Summary

Modifier and Type	Method and Description
protected void	checkAnnotation(PdfDictionary annotDic) Verify the conformity of the annotation dictionary.
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.
protected void	checkBlendMode(PdfName blendMode) Check if blendMode is compatible with pdf/a standard being used.
void	checkCanvasStack(char stackOperation) This method checks compliance with the graphics state architectural limitation, explained by PdfAChecker.maxGsStackDepth.
protected void	checkCatalog(PdfCatalog catalog) Verify the conformity of the pdf catalog.
protected void	checkCatalogAAConformance(PdfDictionary dict) Check the conformity of the AA dictionary on catalog level.
protected void	checkCatalogValidEntries(PdfDictionary catalogDict) Checks if entries in catalog dictionary are valid.
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.
protected void	checkContentConfigurationDictAgainstAsKey(PdfDictionary config) Check optional content configuration dictionary against AS key.
void	checkExtGState(CanvasGraphicsState extGState, PdfStream contentStream) 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.
protected void	checkFileSpec(PdfDictionary fileSpec) Verify the conformity of the file specification dictionary.
protected void	checkFormXObject(PdfStream form, PdfStream contentStream) Verify the conformity of the Form XObject with appropriate specification.
protected void	checkMetaData(PdfDictionary catalog) Performs a number of checks on the metadata of the document.
protected void	checkNumberOfDeviceNComponents(PdfSpecialCs.DeviceN deviceN)
protected void	checkPageAAConformance(PdfDictionary dict) Check the conformity of the AA dictionary on catalog level.
protected void	checkPageColorsUsages(PdfDictionary pageDict, PdfDictionary pageResources) Verify the conformity of used color spaces on the page.
protected void	checkPageTransparency(PdfDictionary pageDict, PdfDictionary pageResources) Verify the conformity of the page transparency.
protected void	checkPdfNumber(PdfNumber number) Verify the conformity of the PDF number.
void	checkSignatureType(boolean isCAdES) This method checks compliance of the signature type
protected void	checkTrailer(PdfDictionary trailer) Verify the conformity of the trailer dictionary.
protected void	checkWidgetAAConformance(PdfDictionary dict) Check the conformity of the AA dictionary on widget level.
protected Set<PdfName>	getAppearanceLessAnnotations() Gets annotation types which are allowed not to have appearance stream.
protected Set<PdfName>	getForbiddenActions() Retrieve forbidden actions in conforming document.
protected Set<PdfName>	getForbiddenAnnotations() Gets forbidden annotation types.
protected int	getMaxNameLength() Retrieve maximum allowed length of the name object.
protected int	getMaxStringLength() Returns maximum allowed bytes length of the string in a PDF document.
protected String	getTransparencyErrorMessage() Retrieve transparency error message valid for the pdf/a standard being used.

Methods inherited from class com.itextpdf.pdfa.checker.PdfA2Checker

checkAppearanceStream, checkColor, checkFontGlyphs, checkForm, checkFormXObject, checkImage, checkInlineImage, checkNonSymbolicTrueTypeFont, checkOutputIntents, checkPageObject, checkPageSize, checkPdfArray, checkPdfDictionary, checkPdfStream, checkSignature, checkTransparencyGroup, getAllowedNamedActions, getMaxRealValue

Methods inherited from class com.itextpdf.pdfa.checker.PdfA1Checker

checkAction, checkColorsUsages, checkContentStream, checkCrypto, checkFont, checkLogicalStructure, checkPdfName, checkPdfString, checkRenderingIntent, checkSymbolicTrueTypeFont, checkText, checkXrefTable, getFormFields, getMaxIntegerValue, getMaxNumberOfIndirectObjects, getMinIntegerValue

Methods inherited from class com.itextpdf.pdfa.checker.PdfAChecker

checkColorSpace, checkContentStreamObject, checkDocument, checkFlag, checkPdfObject, checkResources, checkResources, checkResourcesOfAppearanceStreams, checkSinglePage, checkStructure, checkTagStructureElement, getConformanceLevel, isAlreadyChecked, isContainsTransparencyGroup, isFullCheckMode, objectIsChecked, setFullCheckMode, setPdfAOutputIntentColorSpace

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PdfA4Checker

public PdfA4Checker(PdfAConformanceLevel conformanceLevel)

Creates a PdfA4Checker with the required conformance level

Parameters:

conformanceLevel - the required conformance level

Method Detail

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 PdfA2Checker

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

checkPageColorsUsages

protected void checkPageColorsUsages(PdfDictionary pageDict,
                                     PdfDictionary pageResources)

Verify the conformity of used color spaces on the page.

Overrides:

checkPageColorsUsages in class PdfA2Checker

Parameters:

pageDict - the PdfDictionary contains contents for colors to be checked.

pageResources - the PdfDictionary contains resources for colors to be checked.

checkTrailer

protected void checkTrailer(PdfDictionary trailer)

Verify the conformity of the trailer dictionary.

Overrides:

checkTrailer in class PdfA1Checker

Parameters:

trailer - the PdfDictionary of trailer to check

checkCatalog

protected void checkCatalog(PdfCatalog catalog)

Verify the conformity of the pdf catalog.

Overrides:

checkCatalog in class PdfA1Checker

Parameters:

catalog - the PdfCatalog of trailer to check.

checkCatalogValidEntries

protected void checkCatalogValidEntries(PdfDictionary catalogDict)

Checks if entries in catalog dictionary are valid.

Overrides:

checkCatalogValidEntries in class PdfA2Checker

Parameters:

catalogDict - the catalog PdfDictionary to be checked

checkFileSpec

protected void checkFileSpec(PdfDictionary fileSpec)

Verify the conformity of the file specification dictionary.

Overrides:

checkFileSpec in class PdfA3Checker

Parameters:

fileSpec - the PdfDictionary containing file specification to be checked

checkPageTransparency

protected void checkPageTransparency(PdfDictionary pageDict,
                                     PdfDictionary pageResources)

Verify the conformity of the page transparency.

Overrides:

checkPageTransparency in class PdfA2Checker

Parameters:

pageDict - the PdfDictionary contains contents for transparency to be checked

pageResources - the PdfDictionary contains resources for transparency to be checked

checkCatalogAAConformance

protected void checkCatalogAAConformance(PdfDictionary dict)

Check the conformity of the AA dictionary on catalog level.

Overrides:

checkCatalogAAConformance in class PdfA2Checker

Parameters:

dict - the catalog dictionary

checkPageAAConformance

protected void checkPageAAConformance(PdfDictionary dict)

Check the conformity of the AA dictionary on catalog level.

Overrides:

checkPageAAConformance in class PdfA2Checker

Parameters:

dict - the catalog dictionary

checkPdfNumber

protected void checkPdfNumber(PdfNumber number)

Verify the conformity of the PDF number.

Overrides:

checkPdfNumber in class PdfA1Checker

Parameters:

number - the PdfNumber to check

checkCanvasStack

public void checkCanvasStack(char stackOperation)

This method checks compliance with the graphics state architectural limitation, explained by PdfAChecker.maxGsStackDepth.

Overrides:

checkCanvasStack in class PdfA1Checker

Parameters:

stackOperation - the operation to check the graphics state counter for

checkSignatureType

public void checkSignatureType(boolean isCAdES)

This method checks compliance of the signature type

Overrides:

checkSignatureType in class PdfA1Checker

Parameters:

isCAdES - true is CAdES sig type is used, false otherwise.

getMaxStringLength

protected int getMaxStringLength()

Returns maximum allowed bytes length of the string in a PDF document.

Overrides:

getMaxStringLength in class PdfA2Checker

Returns:

maximum string length

checkNumberOfDeviceNComponents

protected void checkNumberOfDeviceNComponents(PdfSpecialCs.DeviceN deviceN)

Overrides:

checkNumberOfDeviceNComponents in class PdfA2Checker

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 PdfA2Checker

Parameters:

extGState - the graphics state to be checked

contentStream - current content stream

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

Overrides:

checkFormXObject in class PdfA2Checker

Parameters:

form - the PdfStream to be checked

contentStream - the PdfStream current content stream

checkAnnotation

protected void checkAnnotation(PdfDictionary annotDic)

Verify the conformity of the annotation dictionary.

Overrides:

checkAnnotation in class PdfA2Checker

Parameters:

annotDic - the annotation PdfDictionary to be checked

getForbiddenAnnotations

protected Set<PdfName> getForbiddenAnnotations()

Gets forbidden annotation types.

Overrides:

getForbiddenAnnotations in class PdfA2Checker

Returns:

a set of forbidden annotation types

getAppearanceLessAnnotations

protected Set<PdfName> getAppearanceLessAnnotations()

Gets annotation types which are allowed not to have appearance stream.

Overrides:

getAppearanceLessAnnotations in class PdfA2Checker

Returns:

set of annotation names.

checkWidgetAAConformance

protected void checkWidgetAAConformance(PdfDictionary dict)

Check the conformity of the AA dictionary on widget level.

Parameters:

dict - the widget dictionary

checkMetaData

protected void checkMetaData(PdfDictionary catalog)

Description copied from class: PdfAChecker

Performs a number of checks on the metadata of the document.

Overrides:

checkMetaData in class PdfA1Checker

Parameters:

catalog - the catalog PdfDictionary to check

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.

Overrides:

checkAnnotationAgainstActions in class PdfA2Checker

Parameters:

annotDic - an annotation PDF dictionary

getForbiddenActions

protected Set<PdfName> getForbiddenActions()

Retrieve forbidden actions in conforming document.

Overrides:

getForbiddenActions in class PdfA2Checker

Returns:

set of PdfName with forbidden actions

checkContentConfigurationDictAgainstAsKey

protected void checkContentConfigurationDictAgainstAsKey(PdfDictionary config)

Check optional content configuration dictionary against AS key.

Overrides:

checkContentConfigurationDictAgainstAsKey in class PdfA2Checker

Parameters:

config - a content configuration dictionary

getTransparencyErrorMessage

protected String getTransparencyErrorMessage()

Retrieve transparency error message valid for the pdf/a standard being used.

Overrides:

getTransparencyErrorMessage in class PdfA2Checker

Returns:

error message.

checkBlendMode

protected void checkBlendMode(PdfName blendMode)

Check if blendMode is compatible with pdf/a standard being used.

Overrides:

checkBlendMode in class PdfA2Checker

Parameters:

blendMode - blend mode name to check.

getMaxNameLength

protected int getMaxNameLength()

Retrieve maximum allowed length of the name object.

Overrides:

getMaxNameLength in class PdfA1Checker

Returns:

maximum allowed length of the name