Nick Williams created DIGESTER-173:
--------------------------------------
Summary: No way to enable schema validation from DigesterLoader
Key: DIGESTER-173
URL: https://issues.apache.org/jira/browse/DIGESTER-173
Project: Commons Digester
Issue Type: Improvement
Affects Versions: 3.2
Reporter: Nick Williams
Priority: Critical
It's possible that I'm using DigesterLoader with the improper assumptions, but
my belief is that it is meant to be a factor of sorts for creating Digesters.
If this is the case, the DigesterLoader interface is incomplete (and, for that
matter, even if it is not the case, the documentation surrounding the use of
Digester and DigesterLoader is seriously lacking).
I originally used the following code to digest my XML files:
{code}this.loader = DigesterLoader.newLoader(module);
this.loader.setNamespaceAware(true);
this.loader.setSchema(schema);
this.loader.setValidating(true);
this.loader.setErrorHandler(new DefaultThrowingErrorHandler());
this.loader.setUseContextClassLoader(false);
this.loader.setClassLoader(Digester.class.getClassLoader());
...
this.loader.newDigester().parse(myFile);{code}
However, I was getting strange errors "Document is invalid: no grammar found"
and "must match DOCTYPE root null". Since I wasn't using a DOCTYPE, I had no
idea why this was happening. Much Googling of other sources (the documentation
did not help me with this) finally made me realize that setValidating() was
turning on DTD validating, regardless of the fact that I was actually using
schemas.
I finally figured out my code needed to be this:
{code}{code}this.loader = DigesterLoader.newLoader(module);
this.loader.setNamespaceAware(true);
this.loader.setSchema(schema);
this.loader.setErrorHandler(new DefaultThrowingErrorHandler());
this.loader.setUseContextClassLoader(false);
this.loader.setClassLoader(Digester.class.getClassLoader());
...
Digester digester = this.loader.newDigester();
digester.setFeature("http://xml.org/sax/features/validation";, true);
digester.setFeature("http://apache.org/xml/features/validation/schema";, true);
digester.setFeature("http://apache.org/xml/features/validation/schema-full-checking";,
true);{code}
As you can see, I have to first get a Digester from the factory and THEN
configure the digester further before I can use it. This is contrary to the
standard factory pattern.
*Proposal 1*
- Deprecate setValidating(boolean) in DigesterLoader and Digester and replace
them with setDoctypeValidating(boolean).
- Add a setSchemaValidating(boolean) method to DigesterLoader and Digester.
- Add a setFeature() method in DigesterLoader to mirror the one in Digester.
*Proposal 2*
- Document the setValidating(boolean) DigesterLoader and Digester methods
better to indicate that it is for DOCTYPE validation and should not be used
when using schemas.
- Add a setFeature() method in DigesterLoader to mirror the one in Digester.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
