Wiki source code of WebObjects and Squeryl

Version 132.1 by Ravi Mendis on 2010/11/10 03:09

author	version	line-number	content
		1	= Squeryl ~= //SQL-like// DSL for Scala =
		2
		3	Advantages of Squeryl over EOF:
		4
		5	* Concurrent
		6	** Spawns multiple database connections
		7	** Issues database transactions concurrently
		8	* Scala Actor compatible
		9	** Immutable object model/graph
		10	* Strongly-typed
		11	** Better suited for database/business "logic".
		12	E.g: Exploits the compiler and IDE to catch exceptions at compile time rather than at run-time.
		13	* Uses Scala (functional) collection classes
		14
		15	= Migrating EOF -> Squeryl =
		16
		17	In keeping with the strong-typed philosophy of Scala, Squeryl has no dynamic component like EOF (i.e an EO model file).
		18
		19	EOF has the ability to generate classes in Java (and in Objective-C prior to WebObjects 4.5) as enforcing type has become customary in enterprise environments. We may exploit this feature of EOF to generate a Squeryl schema.
		20
		21	== Generating Squeryl Schema ==
		22
		23	1. Create a .eogen file for your EO model as normal. Only set the ##File Names## extension to "scala".
		24	1. Use the Squeryl EO Templates:
		25
		26	*
		27	** Entity.eotemplate [[template>>WOL:Squeryl _Entity.eotemplate]]
		28	** Entity.eotemplate [[template>>WOL:Squeryl Entity.eotemplate]]
		29
		30	{{note title="Note"}}
		31
		32	Any custom business "logic" will have to be manually re-written in Scala
		33
		34	{{/note}}