Steve Lawrence created DAFFODIL-1924:
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Summary: DaffodilXMLLoader needs to explicitly specify which
instance to use
Key: DAFFODIL-1924
URL: https://issues.apache.org/jira/browse/DAFFODIL-1924
Project: Daffodil
Issue Type: New Feature
Components: Front End
Affects Versions: 2.1.0
Reporter: Steve Lawrence
Fix For: 2.2.0
The SAXParserFactory.newInstance() method is used to create a new instance of a
SAXParser. There are a handful of steps taken to find a SAXParser to use, as
documented in the [newInstance()
JavaDocs|https://docs.oracle.com/javase/7/docs/api/javax/xml/parsers/SAXParserFactory.html#newInstance()].
The problem with this is that Daffodil sets the entity-resolver property to an
instance of the DFDLCatalogResolver, which extends a specific Xerces
XMLEntityResolver. In order for this to work, we must be guaranteed that the
SAXParserFactory instance we get is the Xerces one, and not some other one
overridden by one of the ways described in newInstace().
So instead, we should use the newInstance method that lets you provide a string
specifying which factory class to use, and specify our Xerces one.
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