System Variable

It's a variable defined by the Flow Service previously. A system variable can't be changed. The system variable's types are as below. There is an instruction about how to refer to the system variable for each Flow in "Set and refer to a system variable".

System variable name (In English)	Discription
Design information
Project owner ProjectOwner	The project's designer name
Project name ProjectName	Project name
Project file name ProjectFileName	Project file name
Project file's folder ProjectDirectory	Project file's folder
Flow name FlowName	Flow name
Install directory AsteriaDirectory	Install directory
Owner's home directory OwnerDirectory	The home directory of the user who created the project
Running information
Request ID RequestId	Request ID
Session ID SessionId	Session ID
Execution user name ExecuteUser	Execution user name
Execution user's home directory UserDirectory	Execution user's home directory
Caller Flow's project name ParentProjectName	If a SubFlow or an Error Processing Flow refers to the system variable, it will be the caller Flow's project name.
Caller Flow's Flow name ParentFlowName	If a SubFlow or an Error Processing Flow refers to the system variable, it will be the caller Flow's Flow name.
Error Processing (When an Error Processing Flow refers to the system variable)
Error component name ExceptionComponent	The name of the component where error happend
Error message ExceptionMessage	Error message
Error details ExceptionDetail	The text of the error details. The content includes the below things. ExceptionState The error component and its property when the error happened The string value of the input stream of the error component ExceptionParam (when it has been set) ExceptionStream (when it has been set) Stack trace
Error code ExceptionErrorCode	Error code
Error component's type ExceptionComponentType	The type of the component where an error happened
Parameter value 1～5 ExceptionParam1～5	The value matched to the parameter name 1～5 set by the error component
Paramete name 1～5 ExceptionParamName1～5	The parameter name set by the error component
Error mapper function name ExceptionFunctionName	The function name of the mapper where an error happened
HTTP request
HTTP request's URL RequestURL	The execution URL when run the Flow by HTTP ※The server name and the port number isn't included.
Caller host name HttpRemoteHost	The remote host when it's requsted by HTTP
Caller address HttpRemoteAddr	The remote host IP when it's requested by HTTP
HTTP server name HttpServerPort	The name of the HTTP sever which has received the HTTP request
HTTP server's port number HttpServerName	The port of the HTTP server which has recerved the HTTP request
HTTP request's method HttpMethod	The method when the Flow is run by HTTP

Set and refer to system variable

Set a system variable for each Flow to refer to. The system variable will be shown in the input side of the mapping window after it has been set.

• In the tree pane, click or double click the (Flow) item that you want to refer to its system variable, and open its Flow window.
• By either of the below operations, you can open the dialog box for selecting a system variable.
  • Click (system variable) in the "Edit" tool bar
  • Click "system variable" in the "Edit" menu

If the system variable has been set, you can click the "Select" button under the "System variable" tab displayed in the variable pane.

• Select the check box on the left side of a variable name in the dialog box for selecting a system variable.