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Gedcom CGI Protocol and Web Services

Gedcom CGI Protocol and Web Services. John Finlay PhpGedView Project Manager. The Problem. We need a way to inter-connect different genealogy systems GEDCOM provides a standard for encoding genealogy data, but we still lack a common communication protocol.

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Gedcom CGI Protocol and Web Services

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  1. Gedcom CGI Protocol and Web Services John FinlayPhpGedView Project Manager

  2. The Problem • We need a way to inter-connect different genealogy systems • GEDCOM provides a standard for encoding genealogy data, but we still lack a common communication protocol. • Other industries have tapped into this potential by offering a variety of B2B and P2P services.

  3. Client Server GEDCOM Communication Protocol • Client-server system architecture. • The client and server communicate over HTTP • Data is encoded in the GEDCOM 5.5 standard • Lightweight specification • Ubiquitous among genealogy programs. HTTP & GEDCOM

  4. Success 0 @I1@ INDI 1 NAME Joe /Tech/ 1 SEX M 1 BIRT 2 DATE 4 OCT 1976 GEDCOM Communication Protocol • Every client request must specify an “action” value. • The “action” determines what other variables also need to be sent by the client. • The server will respond with data and/or a success code. Action Server Client

  5. Success SESSID abcdefg12345 GEDCOM Communication Protocol • Initiating a Connection • The client sends “connect” action. • Anonymous read-only session or an authenticated session by providing a username and password. • Client must include this session identifier with every future request. • The server responds with client’s unique session identifier. • Authenticated clients may receive greater access to private data or be allowed editing privileges. action=connect Server Client

  6. Client search get update success success success xref=I1 0 @I1@ INDI 1 NAME /Finlay/ 1 BIRT Query=finlay 0 @I1@ INDI 1 NAME John /Finlay/ I1 I2 I3 I400 Server GEDCOM Communication Protocol • Query the server with the “search” or “soundex” actions • Request Gedcom record through the “get” action. • Authenticated clients can send an “update” action to update a gedcom record.

  7. PhpGedView / GDBI Demonstration

  8. Using the protocol to Link Gedcoms • Link people in different Gedcoms such that individual A in Gedcom X links to individual B in Gedcom Y. • Useful when trees are joined through marriages • Gedcom X and Gedcom Y could reside on different computers.

  9. Individual A 0 @I1@ INDI 1 NAME Individual /A/ 1 SEX M 1 FAMS @F1@ Individual B 0 @I1@ INDI 1 NAME Individual /B/ 1 SEX F 1 FAMS @gedcom://remote1.com/gedcomX/F1@ 1 FAMC @F1@ Family F1 0 @F1@ FAM 1 HUSB @I1@ 1 WIFE @gedcom://remote2.com/gedcomY/I1@ 1 MARR 2 DATE 24 MAR 2005 2 PLAC Provo, Utah, Utah Family F1 0 @F1@ FAM 1 HUSB @I2@ 1 WIFE @I3@ 1 MARR 2 DATE 24 MAR 1975 2 PLAC Provo, Utah, Utah 1 CHIL @I1@ Gedcom X on remote1.com Gedcom Y on remote2.com Father I2 Mother I3 Using the protocol to Link Gedcoms

  10. Using the protocol to Link Gedcoms • With this protocol and the simple extension of the GEDCOM specification, you can see how it would be possible to truly create that elusive world tree. • It allows people to maintain control and ownership over their own data, but still allow it to be shared and linked into other family trees.

  11. Questions?

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