Appendix : Legacy Presto components : Mashables and Mashups : Mashups in EMML : Expressions for Mashups : Defining Custom XPath Functions
Defining Custom XPath Functions
 
Write a Custom XPath Function Class
Add the Function to the Classpath for the Business Analytics Server
Add the Function to a Mashup Script or Macro
You can create custom XPath functions to perform calculations and use these functions in XPath expressions anywhere in mashups or macros.
To define custom functions:
1. Write a Custom XPath Function Class
2. Add the Function to the Classpath for the Business Analytics Server
3. Add the Function to a Mashup Script or Macro
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