[DAFFODIL-2115] Incorrect QName namespace prefix suggested for bad steps in DPath paths

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: Diagnostics
• Assignee: Unassigned
• Reporter: Brandon Sloane
• Created: 30/Apr/19 18:52
• Updated: 16/Feb/24 15:38

Description

Consider the following (incorrect) DFDL snippet:

 

<xs:element name="root" dfdl:lengthKind="implicit">
<xs:complexType>
<xs:sequence>
<xs:element ref="a:a_element" />
<xs:element name="b" type="tns:b_type" dfdl:inputValueCalc="{ ../a_element }" />
</xs:sequence>
</xs:complexType>
</xs:element>

Note that the dfdl:inputValueCalc should specify the namespace of the element it is referring to "a:a_element".

In attempting to compile the above, Daffodil reports the error as:

[error] Schema Definition Error: No element corresponding to step {}a_element found. Possibilities for this step include: tns:a_element, {}b.

Following Daffodils advice, results in a more reasonable suggestion:

 

[error] Schema Definition Error: No element corresponding to step tns:a_element found,but elements with the same local name were found (a:a_element).Perhaps a prefix is incorrect or missing on the step name?

 

Schema needed to reproduce is attached. Reproduce with:

daffodil save-parser -s b.dfdl.xsd parser.bin