Linq To lucen.Net

Tuesday, 13 November 2007
This release provides a real focus on the querying abilities of the LINQ to Lucene project and is the first real 'working release', converting LINQ statements to Lucene queries with deferred query execution and object creation or projection. It culminates the majority of the required querying features for LINQ that Lucene provides natively.

	Lucene Syntax	LINQ to Lucene
Terms & Phrases	"test" or "hello dolly"	c.Match("test") or c.Match("hello dolly")
Fields	title:"The Right way" and text:go	c.Title == "The Right way" or c.Text == "go"
WildCard	amb?r	c.ContactName.Match("amb?r")
Prefix	amber*	c.ContactName.StartsWith("amber")
Fuzzy	roam~ or roam~0.8	c.ContactName.Like("roam") or c.ContactName.Like("roam", 0.8)
Proximity	"jakarta apache"~10	c.ContactName.Like("jakarta apache", 10)
Inclusive Range	mod_date:[20020101 TO 20030101]	c.ModifiedDate.Includes("20020101", "20030101")
Exclusive Range	title:{Aida TO Carmen}	c.Title.Between("Aida", "Carmen")
Boosting	jakarta^4 apache	c.Title.Match("jakarta".Boost(4), apache)
Boolean Or	"jakarta apache" OR jakarta	where c.Match("jakarta apache") || c.Match("jakarta")
Boolean And	"jakarta apache" AND "Apache Lucene"	where c.Match("jakarta apache") && c.Match("Apache Lucene")
Boolean Not	"jakarta apache" NOT "Apache Lucene"	where c.Match("jakarta apache") && !c.Match("Apache Lucene")
Required	+jakarta lucene	c.Title.Match("jakarta".Require(), "lucene")
Grouping	(jakarta OR apache) AND website	where (c.Title == "jakarta" || c.Title == "apache") && (c.Title == "website")
Native Syntax	ie. title:{+return +"pink panther")	c.Search("title:(return +\"pink panther\"")