Apama 10.3 | Apama Documentation | Building and Using Apama Dashboards | Building Dashboard Clients | Using Dashboard Functions | Creating custom functions | Installing a custom-function library
Installing a custom-function library
To install your function library for a given data server or display server, do both of the following:
*Include a line in the data server or display server's EXTENSIONS.ini file that specifies the fully qualified name of your IFunctionLibrary implementation. The line must have the following form:
function fully-qualified-classname
*create a jar file that contains your IFunctionLibrary implementation, and either add it to APAMA_DASHBOARD_CLASSPATH (changes to this environment variable are picked up by dashboard processes only at process startup) or add it to the list of External Dependencies in your project's Dashboard Properties. (In Software AG Designer, right-click your project and select Properties, expand Apama, select Dashboard Properties, activate the External Dependencies tab, and click the Add External button). You can also use the --dashboardExtraJars command line argument to specify this jar file.
A data server or display server's EXTENSIONS.INI is, by default, located in the lib directory of its Apama installation. You can specify a data server or display server's EXTENSIONS.ini file at startup by using the -X or --extensionFile option.
The EXTENSIONS.ini specifies the function library to use. This file identifies all the user supplied extension classes (including command libraries and scenario authorities). Here is a sample EXTENSIONS.ini:
function com.apama.dashboard.sample.SampleFunctionLibrary
command com.apama.dashboard.sample.SampleCommandLibrary
scenarioAuthority com.apama.dashboard.sample.SampleScenarioAuthority
This file installs a function library, a command library, and a scenario authority.

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