The node that an XPath expression evaluates
to is being set or compared to the results of the true function.
The true function returns a value of true.
To
test for the existence of a node, use the boolean function.
The following route condition tests whether the node for the stringVar variable exists:
boolean(/process_data/@stringVar) = true()
|
Ensure that you are using the true function
correctly. (See true.)
To
test the value of a boolean value, convert the value to a string.
The following example converts the boolean variable named boolVar to
a string, and compares it to ’true’:
string(/process_data/@boolVar)
= "true"
|
