FMEFunctionCaller

Calls a specified FME function, optionally storing the resulting value in an attribute.

Typical Uses

In rare cases, calling a specific FME function.

How does it work?

The FMEFunctionCaller may be inserted anywhere in a workspace, and runs individual FME functions. It is a legacy transformer that exists for backward compatibility, and should rarely (if ever) be used.

It may not support newer FME functions. Functions that are not supported will produce an error message indicating that the function is not recognized.

Information about FME functions may be found in the FME Factories and Functions documentation page - as noted above, not all functions will be supported in this transformer.

You may provide an attribute name to store the result in, and specify a configuration line for those functions that require one.

Configuration

Input Ports

Output Ports

Parameters

Editing Transformer Parameters

Using a set of menu options, transformer parameters can be assigned by referencing other elements in the workspace. More advanced functions, such as an advanced editor and an arithmetic editor, are also available in some transformers. To access a menu of these options, click beside the applicable parameter. For more information, see Transformer Parameter Menu Options.

Defining Values

There are several ways to define a value for use in a Transformer. The simplest is to simply type in a value or string, which can include functions of various types such as attribute references, math and string functions, and workspace parameters. There are a number of tools and shortcuts that can assist in constructing values, generally available from the drop-down context menu adjacent to the value field.

How to Set Parameter Values

Using the Text Editor

The Text Editor provides a convenient way to construct text strings (including regular expressions) from various data sources, such as attributes, parameters, and constants, where the result is used directly inside a parameter.

Text Editor

Using the Arithmetic Editor

The Arithmetic Editor provides a convenient way to construct math expressions from various data sources, such as attributes, parameters, and feature functions, where the result is used directly inside a parameter.

Arithmetic Editor

Conditional Values

Set values depending on one or more test conditions that either pass or fail.

Parameter Condition Definition Dialog

Content

Expressions and strings can include a number of functions, characters, parameters, and more - whether entered directly in a parameter or constructed using one of the editors.

Content Types

String Functions	These functions manipulate and format strings.
Special Characters	A set of control characters is available in the Text Editor.
Math Functions	Math functions are available in both editors.
Math Operators	These operators are available in the Arithmetic Editor.
FME Feature Functions	These return primarily feature-specific values.
FME Parameters	FME and workspace-specific parameters may be used.
Working with User Parameters	Create your own editable parameters.

Reference

Processing Behavior	Feature-Based
Feature Holding	No
Dependencies	None
FME Licensing Level	FME Base Edition and above
Aliases
History
Categories	Workflows

FME Community

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Examples may contain information licensed under the Open Government Licence – Vancouver

FME Function	Specifies the FME function (@FunctionName) to be called, as well as any parameters it can take.
Result Attribute	Optional: The value returned by the FME function called can be specified in this result attribute.
Configuration Line	Optional: Can be specified if the underlying FME function requires it.