xmlidfilter: A SAX XMLFilter for xml:id Processing
The xml:id Filter is a SAX 2 XMLFilter that performs xml:id processing. It is a complete implementation within the constraints imposed by SAX and the caller:
- If the SAX Attributes does not support the isDeclared() method, the filter cannot distinguish between an undeclared xml:id attribute and an xml:id attribute erroneously declared as CDATA.
- If the SAX Locator used does not support the getXMLVersion() method, the filter assumes that all xml:id values must be valid XML 1.0 NCNames. (If the method is available, it tests for valid XML 1.1 NCNames when XML 1.1 is used.)
- The filter uses a hash to keep track of ID values that have been seen. If the caller selects a limited hash size, then duplicate ID values may not be detected.
The current release is 0.9 from 18 Nov 2004. It implements the 9 November 2005 Working Draft of xml:id.
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