Function

There are three ways to create a function instance:

1. Factory method: create() which takes all necessary information via its parameters.
2. Decoding a formerly JSON encoded function instance using jsonDecode().
3. The constructor accepts an associative array created from json_decode() of a formerly JSON encoded function instance.

• The IFunction interface defines how functions are handled:
  • create() is a factory method creating a function instance.
  • extractApi() queries the SAP remote function for its API circumventing the internal cache.
  • getApi() returns the API of the SAP remote function and caches the result.
  • getConfiguration() returns the configuration used to connect to the SAP system.
  • getName() the SAP remote function name.
  • getParams() returns an array of SAP remote function call parameters set by setParams().
  • invoke() invokes the SAP remote function call and returns its result.
  • resetParams() removes any SAP remote function call parameters set by setParams().
  • setApi() manually sets the API of the SAP remote function.
  • setConfiguration() sets the configuration used to connect to the SAP system.
  • setParams() sets an array of SAP remote function call parameters.

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