com.sun.msv.reader.xmlschema

Class AttributeWildcardComputer

Implemented Interfaces:
ExpressionVisitorVoid

public class AttributeWildcardComputer
extends ExpressionWalker

Processes the attribtue wildcard according to the spec.

Since the definition of the attribute wildcard is very adhoc, it cannot be naturally caputred by our AGM.

Therefore, when we parse a schema, we just parse <anyAttribute> directly. After all components are loaded, arcane computation is done to correctly compute the attribute wildcard.

Attribute wildcard will be ultimately converted into an expression, and that will be attached to the ComplexTypeExp.attWildcard.

This class also computes the attribute propagation that happens only when a complex type is derived by restriction. Consider the following fragment:


 <complextype name="base">
   <attribute name="abc"/>
 </complextype>
 
 <complextype name="derived">
   <complexcontent>
     <restriction base="base"/>
   </complexcontent>
 </complextype>
 

According to the spec, the derived type will have the 'abc' attribute. By "propagation", we mean this behavior.

Author:
Kohsuke KAWAGUCHI

Method Summary

static void
compute(XMLSchemaReader reader, Expression topLevel)
void
onElement(ElementExp exp)
void
onRef(ReferenceExp exp)

Methods inherited from class com.sun.msv.grammar.util.ExpressionWalker

onAnyString, onAttribute, onBinExp, onChoice, onConcur, onData, onElement, onEpsilon, onInterleave, onList, onMixed, onNullSet, onOneOrMore, onOther, onRef, onSequence, onValue

Method Details

compute

public static void compute(XMLSchemaReader reader,
                           Expression topLevel)

onElement

public void onElement(ElementExp exp)
Specified by:
onElement in interface ExpressionVisitorVoid
Overrides:
onElement in interface ExpressionWalker

onRef

public void onRef(ReferenceExp exp)
Specified by:
onRef in interface ExpressionVisitorVoid
Overrides:
onRef in interface ExpressionWalker