jaxp validation xni grammars Grammar xni grammars XMLGrammarDescription xni grammars XMLGrammarPool simplexmlschema abstractxmlschema xmlgrammarpool grammar zero_length_grammar_array grammar grammar fgrammar grammar fgrammars xmlgrammardescription fgrammardescription simplexmlschema grammar grammar fgrammar grammar fgrammars grammar grammar fgrammardescription grammar.getgrammardescription grammar retrieveinitialgrammarset grammartype xmlgrammardescription.xml_schema.equals grammartype grammar fgrammars.clone zero_length_grammar_array cachegrammars grammartype grammar grammars grammar retrievegrammar xmlgrammardescription desc fgrammardescription.equals desc fgrammar lockpool unlockpool xmlgrammarpool getgrammarpool isfullycomposed