[jira] Updated: (DAYTRADER-25) Update decimal precision and indexes in ddl
[ http://issues.apache.org/jira/browse/DAYTRADER-25?page=all ] Christopher James Blythe updated DAYTRADER-25: -- Attachment: daytrader-25.code.patch This patch updates the quote price change algorithm to that described in my previous comments. The change factor varies between +/- 20% and if stock prices reach a value greater than $400, the price is cut in half. > Update decimal precision and indexes in ddl > --- > > Key: DAYTRADER-25 > URL: http://issues.apache.org/jira/browse/DAYTRADER-25 > Project: DayTrader > Issue Type: Improvement >Reporter: Christopher James Blythe >Priority: Minor > Attachments: daytrader-25.code.patch, daytrader-25.schema.patch > > > While working with previous versions of Trade, I found that the monetary > values stored in the database could overrun the decimal precision defined in > the schema (10,2) if allowed to run for an extended period of time. This > would result in SQL exceptions related to data conversion. > To prevent this we increased the decimal presion to (14,2) > We also found that some of the indexs were not necessary and that others > should be added. > In addition to the primary keys, here are the indexes we found to be the most > useful... > CREATE INDEX a.profile_userid on accountejb(profile_userid); > CREATE INDEX h.account_accountid on holdingejb(account_accountid); > CREATE INDEX o.account_accountid on orderejb(account_accountid); > CREATE INDEX o.holding_holdingid on orderejb(holding_holdingid); > CREATE INDEX o.closed_orders on orderejb(account_accountid,orderstatus); > Will wait to submit a patch until the fate of Daytrader-14 is determined. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] Updated: (DAYTRADER-25) Update decimal precision and indexes in ddl
[ http://issues.apache.org/jira/browse/DAYTRADER-25?page=all ] Christopher James Blythe updated DAYTRADER-25: -- Attachment: daytrader-25.schema.patch Here is a patch to fix the schema files associated with DT-14 (built against the 1.2 branch). This updates the indexes and the decimal precision. > Update decimal precision and indexes in ddl > --- > > Key: DAYTRADER-25 > URL: http://issues.apache.org/jira/browse/DAYTRADER-25 > Project: DayTrader > Issue Type: Improvement >Reporter: Christopher James Blythe >Priority: Minor > Attachments: daytrader-25.schema.patch > > > While working with previous versions of Trade, I found that the monetary > values stored in the database could overrun the decimal precision defined in > the schema (10,2) if allowed to run for an extended period of time. This > would result in SQL exceptions related to data conversion. > To prevent this we increased the decimal presion to (14,2) > We also found that some of the indexs were not necessary and that others > should be added. > In addition to the primary keys, here are the indexes we found to be the most > useful... > CREATE INDEX a.profile_userid on accountejb(profile_userid); > CREATE INDEX h.account_accountid on holdingejb(account_accountid); > CREATE INDEX o.account_accountid on orderejb(account_accountid); > CREATE INDEX o.holding_holdingid on orderejb(holding_holdingid); > CREATE INDEX o.closed_orders on orderejb(account_accountid,orderstatus); > Will wait to submit a patch until the fate of Daytrader-14 is determined. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
