Hello,
I use Google Spreadsheet to store my data;
I would like to use GAE to retrieve these data and perform
calculations on it;
I use the following code to get the data from the spreadsheet server -
executed in a GAE task queue:
ListFeed rows1[int_year - 1993] =
getData_Query_ListFeed("( (zahlungsdatum >= 01-01-" + year + ") &&
(zahlungsdatum <= 31-12-" + year + ") )","zahlungsdatum");
private ListFeed getData_Query_ListFeed(String queryString, String
orderByColumn)
{
ListFeed rowFeed = new ListFeed();
try
{
// get rows and cell data
URL metafeedUrl = new URL("http://spreadsheets.google.com/feeds/
spreadsheets/private/full");
SpreadsheetFeed feed = spreadsheetService.getFeed(metafeedUrl,
SpreadsheetFeed.class);
java.util.List<SpreadsheetEntry> spreadsheets = feed.getEntries();
ListQuery query = new
ListQuery(spreadsheets.get(spreadsheet_index).getWorksheets().get(worksheet_index).getListFeedUrl());
query.setSpreadsheetQuery(queryString);
query.setSortColumn(orderByColumn);
rowFeed = spreadsheetService.query(query, ListFeed.class);
}
catch(Exception ex){}
return rowFeed;
}
with the following line I check, that I have received data from the
Google spreadsheet server:
res = rows1[int_year - 1993].getEntries().size();
if res is 0, I repeat the task; if res is greater 0, I move to the
next task;
when I run this code on my localhost GAE server within Eclipse
everything works very well;
when I execute the code on the GAE Web Server, I very often get res=0
back; that means, I have very often to repeat the task;
I checked the log files on the GAE server - it looks like that the 30
sec limitation for a request is not touched;
it looks like that the code of the task is not executed;
nevertheless, sometimes it works fine;
has someone an idea what I am doing wrong?
is there a better way to access the Google Spreadsheets from GAE?
thank you very much in advance for your help;
Best Regards
Rudolf
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