Example workflow for REST and XPath activities
Created: 2011-07-12 13:07:58
Last updated: 2011-07-12 13:07:59
This workflow fetches weather forecast for the user-specified location.
First of all it uses the provided location name to obtain a WOEID ("Where On Earth ID") of that location, then uses that unique identifier to fetch the weather forecast from Yahoo server.
Multiple results may be obtained in case there is no unique translation of the location to a WOEID.
REST activity is used to perform HTTP requests and fetch data from remote servers; XPath activity is then used to parse the XML data and extract only selected elements.
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Titles (1)
| Example workflow for REST and XPath activities |
Descriptions (1)
| This workflow fetches weather forecast for the user-specified location.
First of all it uses the provided location name to obtain a WOEID ("Where On Earth ID") of that location, then uses that unique identifier to fetch the weather forecast from Yahoo server.
Multiple results may be obtained in case there is no unique translation of the location to a WOEID.
REST activity is used to perform HTTP requests and fetch data from remote servers; XPath activity is then used to parse the XML data and extract only selected elements. |
Dependencies (0)
Inputs (1)
| Name |
Description |
| Name_Of_Location_for_Weather_Forecast |
|
Processors (7)
| Name |
Type |
Description |
| LookupWOEID_REST_Service |
rest |
|
| Get_Forecast_REST_Service |
rest |
|
| Extract_WOEID_XPath_Service |
xpath |
Xpath Expression/query/results/default:place/default:woeid |
| Extract_Forecast_Status_XPath_Service |
xpath |
Xpath Expression/rss/channel/item/yweather:condition/@text |
| Extract_Sunrise_Time_XPath_Service |
xpath |
Xpath Expression/rss/channel/yweather:astronomy/@sunrise |
| Extract_Sunset_Time_XPath_Service |
xpath |
Xpath Expression/rss/channel/yweather:astronomy/@sunset |
| Extract_Forecast_Title_XPath_Service |
xpath |
Xpath Expression/rss/channel/item/title |
Outputs (4)
| Name |
Description |
| Forecast_Status |
|
| Sunrise_Time |
|
| Sunset_Time |
|
| Forecast_For |
|
Datalinks (11)
| Source |
Sink |
| Name_Of_Location_for_Weather_Forecast |
LookupWOEID_REST_Service:location |
| Extract_WOEID_XPath_Service:nodelist |
Get_Forecast_REST_Service:location_woeid |
| LookupWOEID_REST_Service:responseBody |
Extract_WOEID_XPath_Service:xml_text |
| Get_Forecast_REST_Service:responseBody |
Extract_Forecast_Status_XPath_Service:xml_text |
| Get_Forecast_REST_Service:responseBody |
Extract_Sunrise_Time_XPath_Service:xml_text |
| Get_Forecast_REST_Service:responseBody |
Extract_Sunset_Time_XPath_Service:xml_text |
| Get_Forecast_REST_Service:responseBody |
Extract_Forecast_Title_XPath_Service:xml_text |
| Extract_Forecast_Status_XPath_Service:nodelist |
Forecast_Status |
| Extract_Sunrise_Time_XPath_Service:nodelist |
Sunrise_Time |
| Extract_Sunset_Time_XPath_Service:nodelist |
Sunset_Time |
| Extract_Forecast_Title_XPath_Service:nodelist |
Forecast_For |
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