Expression Language
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Description: Access a processor's state values by passing in the String key and getting the value back as a String. This is a special Expression Language function that only works with processors that explicitly allow EL to query state. Currently only UpdateAttribute does.

Subject Type: No Subject


  • Key : The key to use when accessing the state map.

Return Type: String

Examples: UpdateAttribute processor has stored the key "count" with value "20" in state. '${getStateValue("count")}` returns 20.