Routes input features to different output ports based on their original feature type. This transformer is especially useful when you have combined several input features for a particular operation (for example, a Clipper) but want to filter them afterwards in order to route them differently.
An output port is created for every connected feature type specified in the Feature Type Names parameter.
If a feature was generated dynamically by this workspace, or has gone through another transformer that caused it to lose its feature type, then it will exit through the <Blank> port.
If a feature has a feature type that is not specified in the Feature Type Names parameter, then it will exit through the <Unfiltered> port.
After connecting feature types to the Input port of the FeatureTypeFilter, open the transformer parameters and click the Update button at the bottom right. (You can also type names in the Feature Type Names field.) FME analyzes the workspace and determines the possible input feature types.
The Update button is enabled only if you are in the main tab and have an input feature type attached to the FeatureTypeFilter transformer. The Update button will then read the feature types on the connected reader and automatically populate the Feature Type Names list with those values.
Click Update again and FME creates the corresponding output ports for every new connection.
Note: Note that when you remove a connection and update the FeatureTypeFilter, the corresponding output port is removed, as well as any connections made from that port. To avoid this, proceed with caution.
This parameter controls the order in which features exit a transformer.
When a transformer has more than one output port, features usually exit one port at a time. At times, it may be useful to keep the order that features arrived in, switching from port to port as necessary. This allows feature order to be preserved, though at a potential cost in processing efficiency.
Select a method for feature ordering.
|<![CDATA[ ]]>Per Output Port (Default)||
Only preserve the input order of features as they occur within the group of features exiting a given output port.
All features exiting an output port retain their ordering relative to each other (within the group), but not relative to features exiting other output ports.
This option is generally the most efficient, where large chunks of features will exit an output port together (taking advantage of bulk mode).
As features exiting different output ports may not be strictly output in the order they arrived, output ordering may be unpredictable.
|<![CDATA[ ]]>Across Output Ports||
Strictly preserve the input order of features, regardless of which output port they exit. Features will be output singly in the same order they arrived, switching from port to port as necessary.
This option is generally less efficient as the processing gains of bulk mode are less likely to apply - however, feature order is predictable.
- You can dynamically create new destination feature types that connect to each output port created by the FeatureTypeFilter. In the Workbench canvas, right-click on the FeatureTypeFilter transformer and select Auto Connect. For more information, see Auto Connect to Destination Feature Types in the Workbench help.
- Output feature order may be controlled with the Advanced > Preserve Feature Order parameter.
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.
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.
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.
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.
Set values depending on one or more test conditions that either pass or fail.
Parameter Condition Definition Dialog
Expressions and strings can include a number of functions, characters, parameters, and more.
When setting values - whether entered directly in a parameter or constructed using one of the editors - strings and expressions containing String, Math, Date/Time or FME Feature Functions will have those functions evaluated. Therefore, the names of these functions (in the form @<function_name>) should not be used as literal string values.
|These functions manipulate and format strings.|
|A set of control characters is available in the Text Editor.|
|Math functions are available in both editors.|
|Date/Time Functions||Date and time functions are available in the Text Editor.|
|These operators are available in the Arithmetic Editor.|
|These return primarily feature-specific values.|
|FME and workspace-specific parameters may be used.|
|Creating and Modifying User Parameters||Create your own editable parameters.|
Dialog Options - Tables
Transformers with table-style parameters have additional tools for populating and manipulating values.
Enabled once you have clicked on a row item. Choices include:
Cut, Copy, and Paste
Enabled once you have clicked on a row item. Choices include:
Cut, copy, and paste may be used within a transformer, or between transformers.
|Start typing a string, and the matrix will only display rows matching those characters. Searches all columns. This only affects the display of attributes within the transformer - it does not alter which attributes are output.|
|Import populates the table with a set of new attributes read from a dataset. Specific application varies between transformers.|
Generally resets the table to its initial state, and may provide additional options to remove invalid entries. Behavior varies between transformers.
Note: Not all tools are available in all transformers.
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