org.apache.pdfbox.preflight.process

Class TrailerValidationProcess

java.lang.Object

org.apache.pdfbox.preflight.process.AbstractProcess

org.apache.pdfbox.preflight.process.TrailerValidationProcess

All Implemented Interfaces:

ValidationProcess

public class TrailerValidationProcess
extends AbstractProcess

Constructor Summary

Constructors

Constructor and Description
TrailerValidationProcess()

Method Summary

Modifier and Type	Method and Description
protected void	checkLinearizedDictionnary(PreflightContext ctx, COSDictionary linearizedDict) Check if mandatory keys of linearized dictionary are present.
protected void	checkMainTrailer(PreflightContext ctx, COSDictionary trailer) check if all keys are authorized in a trailer dictionary and if the type is valid.
protected void	checkTrailersForLinearizedPDF14(PreflightContext ctx) Extracts and compares first and last trailers for PDF version between 1.1 and 1.4.
protected void	checkTrailersForLinearizedPDF15(PreflightContext ctx) Accesses and compares First and Last trailers for a PDF version higher than 1.4.
protected boolean	compareIds(COSDictionary first, COSDictionary last, COSDocument cosDocument) Return true if the ID of the first dictionary is the same as the id of the last dictionary Return false otherwise.
protected COSDictionary	getLinearizedDictionary(PDDocument document) According to the PDF Reference, A linearized PDF contain a dictionary as first object (linearized dictionary) and only this one in the first section.
void	validate(PreflightContext ctx)

Methods inherited from class org.apache.pdfbox.preflight.process.AbstractProcess

addFontError, addValidationError, addValidationErrors

Methods inherited from class java.lang.Object

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

Constructor Detail

TrailerValidationProcess

public TrailerValidationProcess()

Method Detail

validate

public void validate(PreflightContext ctx)
              throws ValidationException

Throws:

ValidationException

checkTrailersForLinearizedPDF14

protected void checkTrailersForLinearizedPDF14(PreflightContext ctx)

Extracts and compares first and last trailers for PDF version between 1.1 and 1.4.

Parameters:

ctx - the preflight context.

checkTrailersForLinearizedPDF15

protected void checkTrailersForLinearizedPDF15(PreflightContext ctx)

Accesses and compares First and Last trailers for a PDF version higher than 1.4.

Parameters:

ctx - the preflight context.

compareIds

protected boolean compareIds(COSDictionary first,
                             COSDictionary last,
                             COSDocument cosDocument)

Return true if the ID of the first dictionary is the same as the id of the last dictionary Return false otherwise.

Parameters:

first - the first dictionary for comparison.

last - the last dictionary for comparison.

cosDocument - the document.

Returns:

true if the IDs of the first and last dictionary are the same.

checkMainTrailer

protected void checkMainTrailer(PreflightContext ctx,
                                COSDictionary trailer)

check if all keys are authorized in a trailer dictionary and if the type is valid.

Parameters:

ctx - the preflight context.

trailer - the trailer dictionary.

getLinearizedDictionary

protected COSDictionary getLinearizedDictionary(PDDocument document)

According to the PDF Reference, A linearized PDF contain a dictionary as first object (linearized dictionary) and only this one in the first section.

Parameters:

document - the document to validate.

Returns:

the linearization dictionary or null.

checkLinearizedDictionnary

protected void checkLinearizedDictionnary(PreflightContext ctx,
                                          COSDictionary linearizedDict)

Check if mandatory keys of linearized dictionary are present.

Parameters:

ctx - the preflight context.

linearizedDict - the linearization dictionary.