org.apache.poi.hslf.record
Class PersistPtrHolder

java.lang.Object
  org.apache.poi.hslf.record.Record
      org.apache.poi.hslf.record.RecordAtom
          org.apache.poi.hslf.record.PositionDependentRecordAtom
              org.apache.poi.hslf.record.PersistPtrHolder

All Implemented Interfaces:

PositionDependentRecord

public final class PersistPtrHolder
extends PositionDependentRecordAtom

General holder for PersistPtrFullBlock and PersistPtrIncrementalBlock records. We need to handle them specially, since we have to go around updating UserEditAtoms if they shuffle about on disk These hold references to where slides "live". If the position of a slide moves, then we have update all of these. If we come up with a new version of a slide, then we have to add one of these to the end of the chain (via CurrentUserAtom and UserEditAtom) pointing to the new slide location

Author:

Nick Burch

PersistPtrHolder

protected PersistPtrHolder(byte[] source,
                           int start,
                           int len)

Create a new holder for a PersistPtr record

getRecordType

public long getRecordType()

Return the value we were given at creation, be it 6001 or 6002

Specified by:

getRecordType in class Record

getKnownSlideIDs

public int[] getKnownSlideIDs()

Get the list of slides that this PersistPtrHolder knows about. (They will be the keys in the map for looking up the positions of these slides)

getSlideLocationsLookup

public java.util.Map<java.lang.Integer,java.lang.Integer> getSlideLocationsLookup()

Get the lookup from slide numbers to byte offsets, for the slides known about by this PersistPtrHolder.

clear

public void clear()

remove all slide references Convenience method provided, for easier reviewing of invocations

addSlideLookup

public void addSlideLookup(int slideID,
                           int posOnDisk)

Adds a new slide, notes or similar, to be looked up by this.

updateOtherRecordReferences

public void updateOtherRecordReferences(java.util.Map<java.lang.Integer,java.lang.Integer> oldToNewReferencesLookup)

At write-out time, update the references to the sheets to their new positions

Specified by:

updateOtherRecordReferences in interface PositionDependentRecord

Specified by:

updateOtherRecordReferences in class PositionDependentRecordAtom

writeOut

public void writeOut(java.io.OutputStream out)
              throws java.io.IOException

Write the contents of the record back, so it can be written to disk

Specified by:

writeOut in class Record

Throws:

java.io.IOException