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java.lang.Objectcom.etymon.pjx.util.PdfReferencedObjects
public class PdfReferencedObjects
Examines a specified object and returns the set of all objects it
references. This class implements the PdfObjectFilter
interface. The preFilter(PdfObject)
method can be overridden in a subclass to
pre-process the object and its contents. This class is
synchronized.
Field Summary | |
---|---|
protected PdfManager |
_m
The manager to use for resolving references. |
protected java.util.Set |
_ref
The current set of referenced objects (stored as indirect references). |
protected java.util.Set |
_ref_master
The total set of referenced objects (stored as indirect references). |
Constructor Summary | |
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PdfReferencedObjects(PdfManager manager)
Constructs a PdfReferencedObjects instance. |
Method Summary | |
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java.util.Set |
getReferenced(PdfObject obj)
Returns the set of all objects referenced by the specified PDF object. |
PdfObject |
postFilter(PdfObject obj)
This method is used by getReferenced(PdfObject) and should not be called
externally. |
PdfObject |
preFilter(PdfObject obj)
This method is used by getReferenced(PdfObject) and should not be called
externally; however, it may be overridden in subclasses
in order to pre-process the objects. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected java.util.Set _ref_master
protected java.util.Set _ref
protected PdfManager _m
Constructor Detail |
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public PdfReferencedObjects(PdfManager manager)
PdfReferencedObjects
instance.
manager
- the manager associated with the document.Method Detail |
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public java.util.Set getReferenced(PdfObject obj) throws java.io.IOException, PdfFormatException
PdfObject.filter(PdfObjectFilter)
to process objects
recursively.
obj
- the object to examine.
PdfFormatException
java.io.IOException
public PdfObject preFilter(PdfObject obj) throws PdfFormatException
getReferenced(PdfObject)
and should not be called
externally; however, it may be overridden in subclasses
in order to pre-process the objects. (It is not
synchronized.)
preFilter
in interface PdfObjectFilter
obj
- the object to filter.
PdfFormatException
public PdfObject postFilter(PdfObject obj) throws PdfFormatException
getReferenced(PdfObject)
and should not be called
externally. (It is not synchronized.)
postFilter
in interface PdfObjectFilter
obj
- the object to filter.
PdfFormatException
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