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GENERAL ACTIVITIES

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Introduction

• The General Activities palette contains several general-purpose activities and process starters. For example, the Timer process starter is used to start a process at a specific time.• The activities are also used for error handling

design time activities.• The activities also contain some engine level

activities like engine command , checkpoint etc.

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ActivitiesActivity Icons Activity Names Description

Assign The Assign activity allows you to assign a value to a user-defined process variable. When the Assign activity is executed, the entire schema for the selected process variable is replaced with the specified values.

Call Process The Call Process activity calls and executes an existing process definition. The input to the called process is defined in the Start activity of the called process. The output of the called process is defined in the End activity of the called process.

Catch The Catch activity receives control of execution when an unhandled exception occurs. You can select a specific exception type to catch or you can specify that this activity should catch all unhandled exceptions. You can have more than one Catch activity in each exception scope, but each Catch activity must have a unique exception type.

Checkpoint The Checkpoint activity performs a checkpoint in a running process instance. A checkpoint saves the current process data and state so that it can be recovered at a later time in the event of a failure.

Confirm The Confirm activity confirms any confirmable messages received by the process instance.

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ActivitiesActivity Icons Activity Names Description

Engine Command

The Engine Command activity allows you to retrieve statistics and information about process definitions, process instances, and activities in the currently running process engine.

Generate Error This activity generates an error and causes an immediate transition to any error transitions. If there are no error transitions, the process instance halts execution. This activity is useful in a group or in a called process.

Get Shared Variable

The Get Shared Variable activity retrieves the current value of a Shared Variable or Job Shared Variable resource.

Inspector The Inspector activity is used to write the output of any or all activities and process variables to a file and/or stdout.

Job Shared Variable

A Job Shared Variable shared configuration resource allows you to store data for use by each process instance. A copy of the variable is created for each new process instance.

Lock Object Lock Object shared configuration resources are used by Critical Section groups to ensure that only one process instance executes the activities in a critical section group at a time.

Mapper The Mapper activity adds a new process variable to the process definition. This variable can be a simple datatype, a TIBCO Active Enterprise schema, an XML schema, or a complex structure. Map data values from the current list of process variables to the elements of the variable added in it.

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ActivitiesActivity icons Activity Names Description

Notify The Notify activity allows a process instance to send data to a corresponding process instance containing a Wait activity or Receive Notification process starter.

Null The Null activity is an activity with no action performed. This activity has a name and a description specified on the Configuration tab, but there is no input or output for the activity.

Rethrow The Rethrow activity throws the exception caught by the Catch activity again. Use this activity when you wish to propagate the exception to the next level.

Set Shared Variable

The Set Shared Variable activity allows you to change the value of a shared variable.

Shared Variable

A Shared Variable resource allows you to share data across process instances.

Sleep The Sleep activity suspends the process on the current transition for the given amount of time. If you have multiple control flows in your process, only the current execution branch of the process is suspended.

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