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=== Current State ===
Officially, GRAMPS import does not merge existing data with new data being imported. (The Spreadsheet/CSV does do a type of merge, but let's leave that aside for the moment. It is discussed in a section of [[Gramps_3Gramps_4.3_Wiki_Manual_0_Wiki_Manual_-_Manage_Family_Trees:_CSV_Import_and_Export | Gramps Manual]]). However, the standard GRAMPS import will duplicate some data (such as events, but not people) if you import a GEDCOM file twice. This proposal will fix this bug by allowing a user to intelligently, interactively, or automatically do a better job than the current version.
This same process can be used to interactively merge two objects in GRAMPS by the user. For example, a user may realize that two person entries are really the same person, and so should be combined.
# Lib
## [http:{{Code Browser}}ci/master/gramps.svn.sourceforge.net/viewvctree/gramps/trunk/src/plugins/lib/libgrdblibmixin.py?view=markup src/plugins/lib/libgrd.py]## [http://gramps.svn.sourceforge.net/viewvc/gramps/trunk/src/plugins/lib/libmixin.py?view=markup src/plugins/lib/libmixin.py]
# Import
## [http:{{Code Browser}}ci/master/gramps.svn.sourceforge.net/viewvctree/gramps/trunk/src/plugins/importimporter/ srcgramps/plugins/importer/import/Import*.py]## [http:/{{Code Browser}}ci/gramps.svn.sourceforge.netmaster/viewvctree/gramps/trunk/src/plugins/importimporter/importgedcom.glade srcgramps/plugins/importimporter/gedcomimportimportgedcom.glade]
# Merging
## [http:{{Code Browser}}ci/master/tree/gramps.svn.sourceforge.net/viewvcgen/merge/gramps/trunk/src/gen/merge/ src/Merge/*.py]## [http:{{Code Browser}}ci/master/tree/gramps.svn.sourceforge.net/viewvcgui/glade/gramps/trunkgui/srcglade/gui*.glade] Some work in gramps40/gladegramps41 towards these ends: * Method to_struct added to all gen.lib objects. Returns JSON-like dictionary self-documenting the fields/ srcvalues recursively.* to_struct used to find differences, gramps/gladegen/merge/diff.py*Report based on diff: [[Image:Database-diff-report.gladepng]]
=== Exporting ===
Currently exporting to [[gedcomGEDCOM]] and csv is limited to some information. Though [[gedcomGEDCOM]] is "standard" lingua franca of genealogy, it is inherently limited, particularly because various extant versions of [[gedcomGEDCOM]]. CSV has the advantage that it can be imported to any current spreadsheet, particularly [http://www.documentfoundationlibreoffice.org/download/ LibreOffice] or OpenOffice.org. What are the limitation of csv exports in gramps?
CSV export/import is limited to the main objects in GRAMPS. It was not designed as a general purpose import/export but rather an alternative input/output tool.
== Julio patch set ==
Julio custom coded merge code in the 2.2.x branch. You find them [http://cage.ugent.be/~bm/downloads/merge.patch here]. This code must be reviewed for 3has been integrated.::[http://sourceforge.1net/mailarchive/message.x php?msg_id=30346713 I think that that was referring to just a couple of functions for creating UUID strings, and integrated if neededthat has been incorporated into Gramps. So, I think it is done.Thanks! -Doug]
== UID, GUID and _UID, what is needed in GRAMPS? ==
* [http://gramps.1791082.n4.nabble.com/Help-with-importing-a-backup-into-existing-database-td1802220.html Suggestion of two stage importer]
* [http://gramps.1791082.n4.nabble.com/Towards-database-synchonizing-tt4655412.html Towards database synchronizing]
* [http://gramps.1791082.n4.nabble.com/Questiions-on-gedcom-REFN-strategy-td1798208.html Questions on gedcom REFN strategy]
The discussion of UID fits with the merge problem. Some unofficial standard for UID we should perhaps follow:
* [httphttps://listsgroups.ldsossgoogle.orgcom/pipermailforum/ldsoss?fromgroups=#!forum/soc.genealogy.computing/2006-May/002298.html mail list discussion on ldsoss]:** [https://groups.google.com/forum/?fromgroups=#!search/Was:$20Software$20implementing$20Gentech$20Genealogical$20Data$20Model/soc.genealogy.computing/BMXOjIXQZdU/mjCP__aMWzIJ UUIDs (Was: Software implementing Gentech Genealogical Data Model)]
* [http://www.familysearchdevnet.org/downloads/gedcom/FS-TT1001.doc word document with the basics]
* [http://bettergedcom.wikispaces.com/message/view/home/29974421 Bettergedcom comments about UUID]
Julio has a patch against Utils.py to generate a UID, see [http://cage.ugent.be/~bm/downloads/uuid.patch here]
==Related Discussions==
*2013-01-13 [http://sourceforge.net/mailarchive/message.php?msg_id=30345408 Towards database syncing]
==Related Gramps Bug Numbers==
* #{{bug|684}}: REFN vs. INDI - ''Feature Request''* #{{bug|2370}}: Errors occur when importing or exporting gramps data to gedcom format* #{{bug|2623}}: Import Export Merge (GEPS 009) - ''Feature Request''* #{{bug|4169}}: To generate numbering class - ''Feature Request''* #{{bug|5125}}: Expand CSV support with AFN and REFN - ''Feature Request''* #{{bug|5253}}: Read and display the content of a .gramps into Gramps without import - ''Feature Request''* #{{bug|41697072}}: A friendly way for recovery - ''Feature Request''
[[Category:GEPS|I]]