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package com.sun.xml.bind.xmlschema;
import com.sun.msv.grammar.ChoiceNameClass;
import com.sun.msv.grammar.DifferenceNameClass;
import com.sun.msv.grammar.ElementExp;
import com.sun.msv.grammar.ExpressionPool;
import com.sun.msv.grammar.Grammar;
import com.sun.msv.grammar.NameClass;
import com.sun.msv.grammar.ReferenceExp;
import com.sun.msv.grammar.trex.ElementPattern;
/**
* Plug that implements the semantics of the lax wildcard of XML Schema.
*
* @since JAXB1.0
* @author
* Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
*/
public class LaxWildcardPlug extends StrictWildcardPlug {
/**
* Union of all the name classes found so far.
*/
private NameClass found;
/**
* Constructor for LaxWildcardPlug.
* @param namespaces
*/
public LaxWildcardPlug(NameClass namespaces) {
super(namespaces);
}
public void connect(ExpressionPool pool, Grammar[] others) {
found = null;
super.connect(pool,others);
NameClass rest = new DifferenceNameClass(namespaces,found).simplify();
// build up lax content model
ReferenceExp r = new ReferenceExp("lax");
r.exp = pool.createZeroOrMore(pool.createChoice(
pool.createAnyString(),
pool.createChoice(
pool.createAttribute(NameClass.ALL),
new ElementPattern(NameClass.ALL,r))));
this.exp = pool.createChoice( this.exp,
new ElementPattern(rest,r));
}
protected void onElementFound( ElementExp elem ) {
super.onElementFound(elem);
// record what are found
if(found==null) found = elem.getNameClass();
else found = new ChoiceNameClass(found,elem.getNameClass());
}
}