Altova XMLSpy 2025 Enterprise Edition

Any non-trivial SPL file will require variables. Some variables are predefined by the code generator, and new variables may be created simply by assigning values to them.

The $ character is used when declaring or using a variable, a variable name is always prefixed by $. Variable names are case sensitive.

Variables types:

•integer - also used as boolean, where 0 is false and everything else is true

•string

•object - provided by XMLSpy

•iterator - see foreach statement

Variable types are declared by first assignment:

x is now an integer.

x is now treated as a string.

Strings

String constants are always enclosed in double quotes, like in the example above. \n and \t inside double quotes are interpreted as newline and tab, \" is a literal double quote, and \\ is a backslash. String constants can also span multiple lines.

String concatenation uses the & character:

Objects

Objects represent the information contained in the XML schema. Objects have properties, which can be accessed using the . operator. It is not possible to create new objects in SPL (they are predefined by the code generator, derived from the input schema), but it is possible to assign objects to variables.

Example:

class [=$class.Name]

This example outputs the word "class", followed by a space and the value of the Name property of the $class object.