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Get date_time from file structure if METADATA is missing and emit a warning #2

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Get date_time from file structure if METADATA is missing and emit a warning #2

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17 changes: 13 additions & 4 deletions R/experiment-info.R
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Original file line number Diff line number Diff line change
Expand Up @@ -16,9 +16,18 @@ experiment_info <- function(FILE){
{metadata <- RSQLite::dbGetQuery(con, "SELECT * FROM METADATA")},
finally={RSQLite::dbDisconnect(con)})

v <- as.list(metadata$value)
names(v) <- metadata$field
#fixme explicitly GMT
v$date_time <- as.POSIXct(as.integer(v$date_time),origin="1970-01-01",tz = "GMT")
if (nrow(metadata) == 0) {
warning(paste0("sqlite3 file ", FILE, "has an empty METADATA table"))
v <- list()
# this assumes the folder the dbfile lives in is the datetime when the experiment started, which should be true in a normal case
# the format of the datetime is YYYY-MM-DD_HH-MM-SS
date_time_str <- rev(unlist(strsplit(dirname(FILE), split ="/")))[1]
v$date_time <- as.POSIXct(date_time_str, tz="GMT", format="%Y-%m-%d_%H-%M-%S")
} else {
v <- as.list(metadata$value)
names(v) <- metadata$field
#fixme explicitly GMT
v$date_time <- as.POSIXct(as.integer(v$date_time),origin="1970-01-01",tz = "GMT")
}
return(v)
}