Apama 10.3 | Apama Documentation | Building and Using Apama Dashboards | Building Dashboard Clients | Using Dashboard Functions | Creating custom functions | Developing a custom-function library
Developing a custom-function library
Implementing getFunctionDescriptors
Implementing evaluateFunction
A sample implementation of IFunctionLibrary is included below in Sample IFunctionLibrary implementation.
*Your implementation of IFunctionLibrary must implement the following methods:
*getFunctionDescriptors: Creates a function descriptor for each function that the library supports; returns a list of com.apama.dashboard.function.IFunctionDescriptors. This method is called once at data server or display server startup. See Implementing getFunctionDescriptors.
*evaluateFunction: Returns the result of executing a specified function with specified arguments. See Implementing evaluateFunction.
When you compile your implementation, ensure that ap-dashboard-client.jar is on your class path. This jar file is in the lib directory of your Apama installation.

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