Constructor Detail

• CopyState

  public CopyState()

  Default constructor.

• CopyState

  public CopyState(ObjIdSet copied)

  Constructor to use when a set of known objects has already been copied.

  Parameters:

  copied - the ID's of objects that have already been copied

  Throws:

  IllegalArgumentException - if copied is null

Method Detail

• markCopied

  public boolean markCopied(ObjId id)

  Determine if an object has already been copied, and if not mark it so.

  Parameters:

  id - object ID of object being copied

  Returns:

  true if id was not previously marked copied, otherwise false

  Throws:

  IllegalArgumentException - if id is null

• isCopied

  public boolean isCopied(ObjId id)

  Determine if an object has been marked as copied.

  Returns:

  true if id has been marked copied, otherwise false

  Throws:

  IllegalArgumentException - if id is null

• markTraversed

  public boolean markTraversed(ObjId id,
                      int[] fields)

  Determine if the specified reference path has already been traversed starting at the given object, and if not mark it so.

  Parameters:

  id - object ID of object being copied

  fields - reference path storage IDs

  Returns:

  true if fields was not previously marked as traversed from id, otherwise false

  Throws:

  IllegalArgumentException - if either parameter is null

  IllegalArgumentException - if fields has length zero

• clone

  public CopyState clone()

  Overrides:

  clone in class Object