US008600925B2 (12) Ulllted States Patent (10) Patent N0.: US 8,600,925 B2 Vickers et a]. (45) Date of Patent: Dec. 3, 2013 (54) OBJECT-RELATIONAL MAPPED DATABASE 7,089,583 B2 8/2006 Mehra etal. INITIALIZATION 7,277,435 B2 * 10/2007 Keller ......................... .. 370/390 7,421,436 B2 9/2008 Salo et a1. (75) Inventors: Arthur John Cerdlc. Vlckers,. Redmond, 7,676,4937,657,505 B2 * 3/20102/2010 PiZJZOHe'lsber et ‘i1’ et al. .... .. 707/999.002 WA (US); Dlego Bernardo Vega, 7,734,659 B2 * 6/2010 Lori ............................ .. 707/802 Sammamish, WA (US); Rowan Miller, 7,788,275 B2 * 8/2010 Warren et a1. .. 707/763 Kirkland’ WA (Us); Andrew “"1 333328125 3%: ‘$315 $6615 6E 21' 383/335 Peters’ Sammamlsh’- WA (Us) 8,438,532, , B2 * 5/2013 FOXee et ea1. a ..................... .. 717/101 2009/0024652 A1 1/2009 Th t l. (73) Assignee: Microsoft Corporation, Redmond, WA 2010/0100427 A1 4/2010 M32331; :1‘ US ( ) OTHER PUBLICATIONS ( * ) Notice: Subjeqw any (gsglaimeé’. the germdof?gig “Productivity Improvements for the Entity Framework”, Retrieved Patent 15 exten e Or a Juste un er from <<http://blogs.msdn.com/b/efdesign/archive/2010/06/2 l/pro U'S'C' 15403) by 201 days‘ ductivity-improvements-for-the-entity-framework. (21) Appl NO _ 13/179 598 aspx?PageIndex:2>>, Jun. 21, 2010, 7 Pages. .. , (Continued) (22) Filed: Jul. 11, 2011 P rzmar' y Exammer ' * M'1c h ae l B H o l mes (65) Prior Publication Data (74) Attorney, Agent, or Firm * Ogilvie LaW Firm US 2012/0331013 A1 D .27 2012 e0 ’ (57) ABSTRACT Related US, Application Data A balance is provided betWeen automation of repetitive data _ _ _ _ _ base creation and con?guration efforts, on the one hand, and (63) E10 gtmuejnongl'gg? 10f apphcanon NO‘ 13/166’825’ ?exibility to depart from prior con?gurations, on the other e on 1111' ’ ' hand, to assist developers With aspects of database initializa (51) IntCl t1on.'AnPPl' a 1cat1on ' d oma1n1nc"ldd u es ata context mstances,' Got'sF 7/00 (2006 01) database connections, object models mapped by an object G06N 5/02 (200601) relational mapper, and database initialiZers. Upon the ?rst 52 U 5 Cl ' attempted runtime use of a particular database connectioni ( ) C ‘ 706/50 data context instance4obj ect model combination, a database I ......... .... ...... ... ...................................... .. initializer is invokad~ Initializers may Check to See if the (58) Fleld of Classl?catlon Search database exists, (re)generate a database and schema based on USPC .... ..' ............................................ 706/50 the Object model, determine Whether the database is compat_ See apphcanon ?le for Complete Search hlstory' ible With the current object model, delete the database and its (56) R f Ct d schema, seed data, modify database indexes, and/or migrate e erences 1 e an existing database, for example. A custom initialiZer can U.S. PATENT DOCUMENTS run developer-supplied code as desired to place the database in a knoWn state for use by the application. 6,487,457 B1 11/2002 Hull et al. 6,999,956 B2 2/2006 Mullins 20 Claims, 3 Drawing Sheets DEVICE, E.G., COMPUTER SYSTEM Q MEMORY / MEDIA m TOOLS Q, E.G., IDE m, OBJECT-RELATIONAL MAPPER @ DEVELOPER CODE Q, OBJECTS Q, DATABASE CONNECTION 1E, MODEL(S) m DATA CONTEXT E INSTANCE 1__0 PROCESSOR(S)m : DISPLAY1 CON FIGURED MEDIUM l INSTRUCTIONS m >- 100 NETWORK(S)‘ L DATA m PERIPHERAL(S) & US 8,600,925 B2 Page 2 (56) References Cited deX.j sp?topic:/com.ibm.websphere.ejbfep.multiplatform.doc/info/ ae/ae/welcinewinreleaseejbfp.html>>, Jun. 29, 2011 (Retrieved OTHER PUBLICATIONS Date), 5 Pages. “ADO.NET Entity FrameworkiWikipedia, the free encyclopedia”, Kraig Brockschmidt et al., “Microsoft Data Development Technolo Retrieved from <<http://en.wikipedia.org/wiki/ADO.NETiEntityi gies: Past, Present, and Future”, Retrieved from <<http://msdn. 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Patent Dec. 3, 2013 Sheet 1 of3 US 8,600,925 B2 DEVICE, E.G., COMPUTER SYSTEM E MEMORY/MEDIAm TOOLS Q, E.G., ‘DE m, DEVELOPER CODE OBJECT-RELATIONAL MAPPER 1 6 E, OBJECTS Q, DATABASE CONNECTION _2 MODEUS) M DATA OONTExT E INSTANOE U l _ _ _ _ _ _ _ _ _ _ __1 |_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __l I ' I DATABASE 138 I PROCESSOR(S) m i DISPLAY Q :l : SCHEMA i—! i _ _ _ _ _ _ _ _ _ _ _ __. l____________________ i ‘ ‘ i CONFIGURED MEDIUM l USER(S) m INSTRUCTIONS L } 100 NETWORK(S)" m DATA m I, PER|PHERAL(S) m Fig. 1 STORAGE MEDIA l DATABASE INITIALIZATION MONITOR u, |NDEX(ES) m MONITOR CODE M SEED DATA m DATABASE INITIALIZER(S) m E.G., DEFAULT INITIALIZER m, EXISTING CUSTOM INITIALIZER & DATABASE E AND DATA E To WGRATE INITIALIZATION SETTING(S) m MODEL-HASH m, SCHEMA-HASH 2 Fig. 2 US. Patent Dec. 3, 2013 Sheet 2 of3 US 8,600,925 B2 / 300 A DETECT ?ATTEMPTED FIRST RUNTIME USE E V INVOKE @ DATABASE INITIALIZER V CHECK @ WHETHER DATABASE EXISTS V DETERMINE m NO DATABASE EXISTS V GENERATE Q COMPATIBLE DATABASE & SCHEMA V ASCERTAIN u DATABASE — MODEL COMPATIBILITY V SKIP m ASCERTAINING COMPATIBILITY V DELETE m DATABASE & SCHEMA V GENERATE 320 312 REPLACEMENT DATABASE FIND E THAT OBJECT MODEL HAS CHANGED V SEED @ DATA INTO DATABASE V MODIFY E INDEX OF DATABASE V MIGRATE @ DATABASE, RETAIN @ DATA V EXECUTE Q (CUSTOM) INITIALIZATION CODE CONFIGURE E STORAGE MEDIUM Fig. 3 US. Patent Dec. 3, 2013 Sheet 3 of3 US 8,600,925 B2 / 400 T OBTAIN @ DATA CONTEXT INSTANCE _, T‘ SPECIFY % DATABASE CONNECTION DEFINE M OBJECT MODEL OF APPLICATION & _} SUPPLY m CUSTOM DATABASE INITIALIZER _, Al IEMPT Q RUNTIME m USE OF CONNECTION _} ‘ VERIFY m DATABASE INITIALIZED g _, VERIFY m BASED ON INDEX MODIFICATION Q _} = VERIFY m BASED ON DATABASE MIGRATION Q _, T VERIFY m BASED ON DATA SEEDING RESULT % _, T‘ sELECT % INITIALIzATION SETTING ' OVERRIDE % DEFAULT INITIALIZER _, ' SUPPLEMENT @ DEFAULT INITIALIZER _, Fig.