#Javagui

open database berlintest

query UBahn

query train7

query trajectory(train7)

query deftime(train7)

query train7 atinstant six30

query val(train7 atinstant six30)

query theminute(2003,11,20,6,25)

query train7 atperiods 
	theperiod(theminute(2003,11,20,6,25), theminute(2003,11,20,6,39))

query thecenter

query train7 at thecenter

query deftime(train7 at thecenter)

query mrain

query msnow

if isDBObject("train453") then delete train453 endif

let train453 = Trains feed filter[.Id = 453] extract[Trip]

query intersection(train453, msnow)

query trajectory(intersection(train453, msnow))

query distance(train7, mehringdamm)

query distance(train7, mehringdamm) > 3000.0


# sets of objects

query Trains count

query Trains feed filter[.Trip present eight] consume

#[start optimizer server]

query mehringdamm

select * from trains 
	where [trip present eight, trip passes mehringdamm]

select [val(trip atinstant eight) as ateight] from trains 
	where [trip present eight, trip passes mehringdamm]

close database