Multiple repetitions in a single rule - esper

Question

I'm trying to express the rule "at least two foos followed by two bars within 2 seconds" in EPL. I've tried using both patterns and match_recognize, and I can't get the semantics I want. I've modified the StockTick example from the online EPL tool to illustrate what I'm doing.
I've tried the two patterns below:
select g[0].seq, g[1].seq, g[2].seq, g[3].seq, y[0].seq, y[1].seq from pattern [
every ([2:] g=StockTick(symbol = 'GE') until timer:interval(2 sec)) -> not timer:interval(2 sec) and every [2] y=StockTick(symbol = 'YHOO')
];
and
select * from StockTick match_recognize (
measures g[0].seq as g0_seq, g[1].seq as g1_seq, g[2].seq as g2_seq, g[3].seq as g3_seq, y[0].seq as y0_seq, y[1].seq as y1_seq
pattern (g{2,} y{2})
interval 2 sec
define
g as g.symbol = 'GE',
y as y.symbol = 'YHOO'
);
for the following event definition:
create schema StockTick(seq int, symbol string);
on the following input:
StockTick={seq=1, symbol='GE'}
t=t.plus(200 msec)
StockTick={seq=2, symbol='GE'}
t=t.plus(200 msec)
StockTick={seq=3, symbol='GE'}
t=t.plus(200 msec)
StockTick={seq=4, symbol='GE'}
t=t.plus(200 msec)
StockTick={seq=5, symbol='YHOO'}
t=t.plus(200 msec)
StockTick={seq=6, symbol='GE'}
t=t.plus(200 msec)
StockTick={seq=7, symbol='GE'}
t=t.plus(200 msec)
StockTick={seq=8, symbol='GE'}
t=t.plus(200 msec)
StockTick={seq=9, symbol='YHOO'}
t=t.plus(200 msec)
StockTick={seq=10, symbol='YHOO'}
t=t.plus(200 msec)
StockTick={seq=11, symbol='GE'}
t=t.plus(200 msec)
StockTick={seq=12, symbol='YHOO'}
t=t.plus(200 msec)
StockTick={seq=13, symbol='YHOO'}
t=t.plus(200 msec)
StockTick={seq=14, symbol='YHOO'}
t=t.plus(200 msec)
StockTick={seq=15, symbol='GE'}
t=t.plus(200 msec)
StockTick={seq=16, symbol='GE'}
t=t.plus(200 msec)
StockTick={seq=17, symbol='GE'}
t=t.plus(200 msec)
StockTick={seq=18, symbol='GE'}
t=t.plus(200 msec)
StockTick={seq=19, symbol='GE'}
t=t.plus(200 msec)
StockTick={seq=20, symbol='YHOO'}
t=t.plus(200 msec)
StockTick={seq=21, symbol='GE'}
t=t.plus(200 msec)
StockTick={seq=22, symbol='YHOO'}
t=t.plus(200 msec)
StockTick={seq=23, symbol='GE'}
t=t.plus(200 msec)
StockTick={seq=24, symbol='GE'}
t=t.plus(200 msec)
StockTick={seq=25, symbol='GE'}
t=t.plus(200 msec)
StockTick={seq=26, symbol='GE'}
and got the following output:
At: 2001-01-01 08:00:02.400
Statement: Stmt-2
Insert
Stmt-2-output={g[0].seq=1, g[1].seq=2, g[2].seq=3, g[3].seq=4, y[0].seq=12, y[1].seq=13}
At: 2001-01-01 08:00:03.000
Statement: Stmt-3
Insert
Stmt-3-output={g0_sec=6, g1_sec=7, g2_sec=8, g3_seq=(null), y0_seq=9, y1_seq=10}
At: 2001-01-01 08:00:03.800
Statement: Stmt-2
Insert
Stmt-2-output={g[0].seq=1, g[1].seq=2, g[2].seq=3, g[3].seq=4, y[0].seq=14, y[1].seq=20}
I understand with with the first EPL statement, the until timer:interval(2 sec) does not match the logic I actually intended, but I'm not sure how else to express it.
I have tried attaching windows (#time(2 sec)) to the patterns without the output changing.
I am looking to get matches with the following sequence numbers:
(1, 2, 3, 4, 5, 9)
(1, 2, 3, 4, 9, 10)
(2, 3, 4, 6, 9, 10)
etc.
such that the rule is evaluated for each 2 second window, and I get maximally long sequences of g in each of these windows.

Answer 1

The "interval" in match-recognize has a different meaning. What you want is this:
select * from StockTick#time(2 sec) match_recognize...
The doc link is http://espertech.com/esper/release-6.1.0/esper-reference/html_single/index.html#match-recognize-datawindow