RefKey(PRIndirectReference ref) {
num = ref.getNumber();
gen = ref.getGeneration();
}
/**
* Checks if a reference refers to a page object.
*
* @param ref the reference that needs to be checked
* @return true is the reference refers to a page object.
*/
protected boolean isPage(PRIndirectReference ref) {
IntHashtable refs = pages2intrefs.get(ref.getReader());
if (refs != null) return refs.containsKey(ref.getNumber());
else return false;
}
/**
* Sets a reference to "visited" in the copy process.
*
* @param ref the reference that needs to be set to "visited"
* @return true if the reference was set to visited
*/
protected boolean setVisited(PRIndirectReference ref) {
IntHashtable refs = visited.get(ref.getReader());
if (refs != null) return refs.put(ref.getNumber(), 1) != 0;
else return false;
}
/**
* Checks if a reference has already been "visited" in the copy process.
*
* @param ref the reference that needs to be checked
* @return true if the reference was already visited
*/
protected boolean isVisited(PRIndirectReference ref) {
IntHashtable refs = visited.get(ref.getReader());
if (refs != null) return refs.containsKey(ref.getNumber());
else return false;
}
protected PdfIndirectReference getNewReference(PRIndirectReference ref) {
return new PdfIndirectReference(0, getNewObjectNumber(ref.getReader(), ref.getNumber(), 0));
}
