Validates the syntax or schema of an XML file or text. There are different ways to specify the XML source to be validated:
- entering the XML text in the XML Text field,
- specifying the attribute that contains the XML text in the Attribute with XML Text parameter,
- specifying the attribute that contains the path to XML File, or
- picking the XML file in the XML Filename parameter.
Parameters
XML Input
The choice that you make in this field enables its corresponding parameter.
- Attribute with XML Text: Choose the attribute that contains XML Text.
- XML File: Browse to the XML file or choose the attribute that contains path to XML file.
Validation
Validation Type
This parameter determines what validation is performed on the features. All features that pass the selected validation are output through the Passed port.
- None: all features will be output through the Passed port.
- Syntax: only the syntax of the features is validated.
- Syntax and Namespace: the syntax and namespace of the features are validated.
- Syntax and Schema: the syntax and schema of the features are validated. The schema is specified using the Schema Input parameter.
Schema
These parameters are visible only if Validation Type is Syntax and Schema.
Schema Input
Allows you to specify either the Attribute with Schema Text or Schema Filename parameter (below).
Attribute with Schema Text
Allows you to specify an attribute that contains the schema text to validate with.
Schema Filename
Allows you to specify the schema by a file location or URL. However, it is not guaranteed that the schema specified is used in the validation if the schema referenced by the XML file can be located in the default XML Schema location in FME.
Output
Error and Warning List Name
Features with at least one warning or error will be output through the Failed port with a new list attribute added to the features. If the default _xml_error is the list name, the elements of the list attribute contain the following:
| Elements of List Attribute | Description |
|---|---|
| _xml_error{}.type | WARNING, ERROR or FATAL ERROR |
| _xml_error{}.file | the file where the warning or error occurs |
| _xml_error{}.line | the line where the warning or error occurs |
| _xml_error{}.col | the column where the warning or error occurs |
| _xml_error{}.desc | the details about the warning or error |
Note: List attributes are not accessible from the output schema in Workbench unless they are first processed using a transformer that operates on them, such as ListExploder or ListConcatenator. Alternatively, AttributeExposer can be used.
Limit Number of Errors/Warnings in Output
If Yes, a maximum number of errors or warnings per feature can be specified. If No, all errors and warnings per feature are logged.
Maximum Number of Errors/Warnings
Specifies the maximum number of errors and warnings reported per feature. If there are more errors than this number, they are not logged.
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.
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.
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.
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.
Content Types
| These functions manipulate and format strings. | |
|
Special Characters |
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.
Table Tools
|
Row Reordering
|
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. |
|
Filter
|
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
|
Import populates the table with a set of new attributes read from a dataset. Specific application varies between transformers. |
|
Reset/Refresh
|
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.
FME Licensing Level
FME Professional edition and above
FME Community
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Search for samples and information about this transformer on the FME Community.