Get rid of override warnings when running tests and creating multiple databases

Author: quinnj

src/SQLite.jl

@@ -41,9 +41,8 @@ type DB
     function DB(f::AbstractString)
         handle = Ref{Ptr{Void}}()
         f = isempty(f) ? f : expanduser(f)
-        if @OK sqliteopen(f,handle)
-            db = new(f,handle[],0)
-            register(db, regexp, nargs=2, name="regexp")
+        if @OK sqliteopen(f, handle)
+            db = new(f, handle[], 0)
             finalizer(db, _close)
             return db
         else # error

src/UDF.jl

@@ -209,8 +209,9 @@ function register(db, func::Function; nargs::Int=-1, name::AbstractString=string
 end
 
 # as above but for aggregate functions
+newidentity() = @eval x->x
 function register(
-    db, init, step::Function, final::Function=identity;
+    db, init, step::Function, final::Function= newidentity;
     nargs::Int=-1, name::AbstractString=string(step), isdeterm::Bool=true
 )
     @assert nargs <= 127 "use -1 if > 127 arguments are needed"

test/runtests.jl

@@ -3,11 +3,6 @@ using Base.Test, DataStreams, DataFrames, NullableArrays, WeakRefStrings
 
 import Base: +, ==
 
-a = SQLite.DB()
-
-temp = tempname()
-SQLite.DB(temp)
-
 dbfile = joinpath(dirname(@__FILE__),"Chinook_Sqlite.sqlite")
 dbfile2 = joinpath(dirname(@__FILE__),"test.sqlite")
 # dbfile = joinpath(Pkg.dir("SQLite"),"test/Chinook_Sqlite.sqlite")
@@ -163,6 +158,7 @@ r = SQLite.query(db, "SELECT * FROM temp WHERE AlbumId = 0")
 @test r[1,3] === Nullable(0)
 SQLite.drop!(db, "temp")
 
+register(db, SQLite.regexp, nargs=2, name="regexp")
 r = SQLite.query(db, SQLite.@sr_str("SELECT LastName FROM Employee WHERE BirthDate REGEXP '^\\d{4}-08'"))
 @test get(r.columns[1][1]) == "Peacock"