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XML Foreign Exchange rate feed ... into CF array?

Posted on 2004-04-26
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Last Modified: 2013-12-24
Folks:
For me ... this is a tough one! I hope you can help!

I found an online rss xml feed for foreign currency exchange rates. I need to parse the xml feed into an array ...
so I can then import into a mysql table (which I feel pretty good about accomplishing).

BUT I've NO idea how XML stuff works (excuse pretty huge ignorance) ...

I'm hoping to do this:

- read XML file (see link) into these variables:
: exch_rate_date = (the date of the published rates (i.e. 2004-04-23))

: exch_rate_ccy [1,2,3 ... 6,7,8] = 'Malaysia' / 'Hong Kong' etc.
: exch_rate_num [1,2,3 ... 6,7,8] = 0.7287 etc (as a numeric with 4 decimal places)

That way ... I can then do a simple 'insert' into my database of the array contents.

http://www.ny.frb.org/markets/fxrates/FXtoXML.cfm?FEXdate=2004%2D04%2D23%2000%3A00%3A00&FEXtime=1200



Thanks for any guidance!
Richard Buchanan
The Opinion Exchange
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Question by:rcbuchanan
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PE_CF_DEV earned 500 total points
Comment Utility
If you are using CF MX then you can use chttp to get that XML return. then use XMLParse(cfhttp.filecontent). This will pout the XML into a ColdFusion XML object. From there you would just access info in the XML like a structure. So you would do

<cfscript>
Exchange_Rates = xmlparse(cfhttp.filecontent);
Country = Exchange_Rates.RateList.rate[1].Country.xmltest;
Rate = Exchange_Rates.RateList.rate[1].Value.xmltext;
</cfscript>

That would return the first rate in the XML response that being Australia as the country and 0.7287 as the rate.

You loop it if you want..something like this
<cfloop from=1 to=#arraylen(Exchange_Rates.RateList.Rate)# step=1 index = 'Rate_Loc'>
<cfset Cur_Rate = Exchange_Rates.RateList.Rate[Rate_Loc]>
<!--- Then you will reference Cur_Rate.whatever to get the values you want into an array --->
</cfloop>
 
If you need mroe explaination let me know
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by:rcbuchanan
Comment Utility
OK, ... I'm an IDIOT .. and found an EVEN better (more comprehensive list of currency exchange rates (in canadian dollar terms but) ... and i'm EVEN MORE stuck!

I found an online csv feed for foreign currency exchange rates. I need to parse the seven (7) days of rates into my mysql database table.  I understand the database stuff ... BUT I've little clue about parsing csv files! (excuse pretty huge ignorance) ...

I'm hoping to do this:

- read first line (DATE ..) and store the SEVEN days reported into a simple array:
ccy_date [1,2,3 ... 7] = where each contains the date reported

- read the United States Dollar rates into ccy_USD [1,2,3 ... 7] array as numeric /w four decimal places so I can convert the Canadian Dollar reporting into USD reporting.

THEN ...

read EACH subsequent LINE (currency) as an INSERT into my database ...
insert into ccy_table
(ccy_name, ccy_date, ccy_rate)
values ( the csv'd country name, the csv'd date, the csv'd exch rate)

obviouly I'd use the ccy_USD [x] array field to convert the Canadian Dollar influence into the US Dollar spin.

the CSV rates are via:
http://www.bankofcanada.ca/en/financial_markets/csv/exchange_eng.csv



What do you think? [am trying to reload question with another 500 points ... be patient with me!]

Richard

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Author Comment

by:rcbuchanan
Comment Utility
ok, ... am listing as new question 'cos I cannot see how to reassign new points to it! ... yikes.

Richard
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