/*
* @(#)$Id: RedefineState.java,v 1.12 2002/03/04 02:12:05 kk122374 Exp $
*
* Copyright 2001 Sun Microsystems, Inc. All Rights Reserved.
*
* This software is the proprietary information of Sun Microsystems, Inc.
* Use is subject to license terms.
*
*/
package com.sun.msv.reader.xmlschema;
import com.sun.msv.datatype.xsd.XSDatatype;
import com.sun.msv.grammar.xmlschema.SimpleTypeExp;
import com.sun.msv.reader.AbortException;
import com.sun.msv.reader.ChildlessState;
import com.sun.msv.reader.State;
import com.sun.msv.reader.datatype.xsd.SimpleTypeState;
import com.sun.msv.reader.datatype.xsd.XSDatatypeExp;
import com.sun.msv.util.StartTagInfo;
/**
* used to parse <redefine> element.
*
* @author <a href="mailto:kohsuke.kawaguchi@eng.sun.com">Kohsuke KAWAGUCHI</a>
*/
public class RedefineState extends GlobalDeclState {
// TODO: elementDecl/attributeDecl are prohibited in redefine.
// TODO: it probably is an error to redefine undefined components.
// TODO: it is NOT an error to fail to load the specified schema (see 4.2.3)
/**
* When a simple type is being redefined, the original declaration
* will be stored here.
*/
private SimpleTypeExp oldSimpleTypeExp;
protected State createChildState( StartTagInfo tag ) {
// SimpleType parsing is implemented in reader.datatype.xsd,
// and therefore it doesn't support redefinition by itself.
// so we need to take care of redefinition for them.
// for detail, see RedefinableDeclState
if( tag.localName.equals("simpleType") ) {
final XMLSchemaReader reader = (XMLSchemaReader)this.reader;
String name = tag.getAttribute("name");
SimpleTypeExp sexp = reader.currentSchema.simpleTypes.get(name);
if( sexp==null ) {
reader.reportError( reader.ERR_REDEFINE_UNDEFINED, name );
// recover by using an empty declaration
sexp = reader.currentSchema.simpleTypes.getOrCreate(name);
}
reader.currentSchema.simpleTypes.redefine( name, sexp.getClone() );
oldSimpleTypeExp = sexp; // memorize this declaration
}
return super.createChildState(tag);
}
protected void startSelf() {
final XMLSchemaReader reader = (XMLSchemaReader)this.reader;
super.startSelf();
try {// parse included grammar first.
reader.switchSource( this,
new RootIncludedSchemaState(
reader.sfactory.schemaIncluded(this,reader.currentSchema.targetNamespace) ) );
} catch( AbortException e ) {
// recover by ignoring the error
}
// disable duplicate definition check.
prevDuplicateCheck = reader.doDuplicateDefinitionCheck;
}
/** previous value of reader#doDuplicateDefinitionCheck. */
private boolean prevDuplicateCheck;
protected void endSelf() {
final XMLSchemaReader reader = (XMLSchemaReader)this.reader;
reader.doDuplicateDefinitionCheck = prevDuplicateCheck;
super.endSelf();
}
public void onEndChild( XSDatatypeExp type ) {
// handle redefinition of simpleType.
final XMLSchemaReader reader = (XMLSchemaReader)this.reader;
final String typeName = type.name;
if( typeName==null ) {
// top-level simpleType must define a named type
reader.reportError( reader.ERR_MISSING_ATTRIBUTE, "simpleType", "name" );
return; // recover by ignoring this declaration
}
oldSimpleTypeExp.set(type);
reader.setDeclaredLocationOf(oldSimpleTypeExp);
// restore the association
reader.currentSchema.simpleTypes.redefine( oldSimpleTypeExp.name, oldSimpleTypeExp );
oldSimpleTypeExp = null;
}
}