- TIBCO BusinessEvents®
- CEP Pattern
- Pattern
- Manager
- Advanced

# Pattern.Manager.Advanced.getEventExtIds()

## Signature

`String[] getEventExtIds(Object opaque)`

## Domain

ACTION

## Description

Returns an array of Event ExtIds that have been observed by the pattern instance so far - i.e that ones that did not cause the instance to fail. The only parameter this function takes is the $1opaque$1 parameter provided by the Pattern Service when it invokes the listener rule function. An empty array is returned if there were no such Event ExtIds. If the Event did not have an ExtId, then a `null` will be stored in its place.

## Parameters

Name | Type | Description
--- | --- | ---
`advancedOpaque` | `Object` | Service when it invoked the callback RuleFunction.

## Returns

Type | Description
--- | ---
`String[]` | An empty array if there was nothing.

## Cautions

none

## See Also

void setCompletionListener(Object patternInstance, String ruleFunctionURI)