/**
* Redistribution and use of this software and associated documentation
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* that the following conditions are met:
*
* 1. Redistributions of source code must retain copyright
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* copy of this document.
*
* 2. Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions and the
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*
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* products derived from this Software without prior written
* permission of Intalio, Inc. For written permission,
* please contact info@exolab.org.
*
* 4. Products derived from this Software may not be called "Exolab"
* nor may "Exolab" appear in their names without prior written
* permission of Intalio, Inc. Exolab is a registered
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*
* 5. Due credit should be given to the Exolab Project
* (http://www.exolab.org/).
*
* THIS SOFTWARE IS PROVIDED BY INTALIO, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Copyright 1999-2002 (C) Intalio, Inc. All Rights Reserved.
*
* $Id$
*/
package org.exolab.castor.xml.schema.reader;
//-- imported classes and packages
import org.exolab.castor.xml.AttributeSet;
import org.exolab.castor.xml.Namespaces;
import org.exolab.castor.xml.XMLException;
import org.exolab.castor.xml.schema.Annotation;
import org.exolab.castor.xml.schema.Group;
import org.exolab.castor.xml.schema.ModelGroup;
import org.exolab.castor.xml.schema.Schema;
import org.exolab.castor.xml.schema.SchemaContext;
import org.exolab.castor.xml.schema.SchemaException;
import org.exolab.castor.xml.schema.SchemaNames;
/**
* A class for Unmarshalling ModelGroups Definition
* @author <a href="mailto:kvisco@intalio.com">Keith Visco</a>
* @version $Revisio:$ $Date: 2005-12-13 14:58:48 -0700 (Tue, 13 Dec 2005) $
**/
public class ModelGroupUnmarshaller extends ComponentReader {
//--------------------------/
//- Static Class Variables -/
//--------------------------/
/**
* The value of the maximum occurance wild card
*/
private static final String MAX_OCCURS_WILDCARD = "unbounded";
//--------------------/
//- Member Variables -/
//--------------------/
/**
* The current ComponentReader
**/
private ComponentReader unmarshaller;
/**
* The current branch depth
**/
private int depth = 0;
/**
* The ModelGroup reference for the ModelGroup we are constructing
**/
private ModelGroup _group = null;
/**
* The Schema being "unmarshalled"
**/
private Schema _schema = null;
/**
* Flag to indicate if we have already encounter an {@literal <annotation>}
*/
private boolean foundAnnotation = false;
//----------------/
//- Constructors -/
//----------------/
/**
* Creates a new ModelGroupUnmarshaller.
* @param schemaContext the {@link SchemaContext} to get some configuration settings from
* @param schema the Schema to which the ModelGroup belongs
* @param atts the AttributeList
**/
public ModelGroupUnmarshaller(
final SchemaContext schemaContext,
final Schema schema,
final AttributeSet atts) {
super(schemaContext);
this._schema = schema;
_group = new ModelGroup(_schema);
//-- handle attributes
String attValue = null;
//-- set name
_group.setName(atts.getValue("name"));
/*
* @maxOccurs
* If maxOccurs is present, the value is either unbounded
* or the int value of the attribute, otherwise maxOccurs
* equals the minOccurs value.
*/
attValue = atts.getValue(SchemaNames.MAX_OCCURS_ATTR);
if (attValue != null) {
if (_group.getName() != null)
throw new IllegalArgumentException("In <group>: "+_group.getName()+"'maxOccurs' cannot appear in a named <group>");
if (MAX_OCCURS_WILDCARD.equals(attValue)) attValue = "-1";
int maxOccurs = toInt(attValue);
_group.setMaxOccurs(maxOccurs);
}
//-- minOccurs
attValue = atts.getValue("minOccurs");
if (attValue != null) {
if (_group.getName() != null)
throw new IllegalArgumentException("In <group>: "+_group.getName()+", 'minOccurs' cannot appear in a named <group>");
_group.setMinOccurs(toInt(attValue));
}
//-- @ref
attValue = atts.getValue("ref");
if (attValue != null) {
if (_group.getName() != null)
throw new IllegalArgumentException("In <group>: "+_group.getName()+", 'ref' cannot appear in a named <group>");
// String name = attValue;
// int idx = name.indexOf(':');
// String ns = null;
// if (idx >= 0) {
// String nsPrefix = name.substring(0,idx);
// name = name.substring(idx + 1);
// ns = (String) schema.getNamespace(nsPrefix);
// if (ns == null) {
// String err = "in the <group> referring: "+attValue;
// err += " The Namespace prefix is not recognized '"+nsPrefix+"'";
// throw new IllegalArgumentException(err);
// }
// }
//
// if (ns != null) {
// Schema tempSchema = schema.getImportedSchema(ns);
// if (tempSchema!=null) {
// _group.setSchema(tempSchema);
// }
// tempSchema = null;
// }
_group.setReference(attValue);
}
//-- id
attValue = atts.getValue("id");
_group.setId(attValue);
//-- not yet supported
} //-- ModelGroupUnmarshaller
//-----------/
//- Methods -/
//-----------/
/**
* Returns the Group that was unmarshalled by this Unmarshaller.
* This method should only be called after unmarshalling
* has been completed.
*
* @return the unmarshalled Group
**/
public ModelGroup getGroup() {
return _group;
} //-- getGroup
/**
* Returns the Object created by this ComponentReader
* @return the Object created by this ComponentReader
**/
public Object getObject() {
return getGroup();
} //-- getObject
/**
* Sets the name of the element that this UnknownUnmarshaller handles
**/
public String elementName() {
return SchemaNames.GROUP;
} //-- elementName
/**
* Signals the start of an element with the given name.
*
* @param name the NCName of the element. It is an error
* if the name is a QName (ie. contains a prefix).
* @param namespace the namespace of the element. This may be null.
* Note: A null namespace is not the same as the default namespace unless
* the default namespace is also null.
* @param atts the AttributeSet containing the attributes associated
* with the element.
* @param nsDecls the namespace declarations being declared for this
* element. This may be null.
**/
public void startElement(String name, String namespace, AttributeSet atts,
Namespaces nsDecls)
throws XMLException
{
//-- Do delagation if necessary
if (unmarshaller != null) {
unmarshaller.startElement(name, namespace, atts, nsDecls);
++depth;
return;
}
if (SchemaNames.ANNOTATION.equals(name)) {
if (foundAnnotation)
error("Only one (1) 'annotation' is allowed as a child of "+
"element definitions.");
foundAnnotation = true;
unmarshaller = new AnnotationUnmarshaller(getSchemaContext(), atts);
}
else if (SchemaNames.isGroupName(name)) {
unmarshaller
= new GroupUnmarshaller(getSchemaContext(), _schema, name, atts);
}
else {
StringBuffer err = new StringBuffer("illegal element <");
err.append(name);
err.append("> found in <group>.");
throw new SchemaException(err.toString());
}
} //-- startElement
/**
* Signals to end of the element with the given name.
*
* @param name the NCName of the element. It is an error
* if the name is a QName (ie. contains a prefix).
* @param namespace the namespace of the element.
**/
public void endElement(String name, String namespace)
throws XMLException
{
//-- Do delagation if necessary
if ((unmarshaller != null) && (depth > 0)) {
unmarshaller.endElement(name, namespace);
--depth;
return;
}
//-- check for name mismatches
if (unmarshaller != null) {
if (!name.equals(unmarshaller.elementName())) {
String err = "missing end element for ";
err += unmarshaller.elementName();
throw new SchemaException(err);
}
}
if (SchemaNames.ANNOTATION.equals(name)) {
Annotation ann = (Annotation)unmarshaller.getObject();
_group.addAnnotation(ann);
}
else if (SchemaNames.isGroupName(name)) {
Group group = ((GroupUnmarshaller)unmarshaller).getGroup();
_group.addGroup(group);
}
//-- have unmarshaller perform any necessary clean up
unmarshaller.finish();
unmarshaller = null;
} //-- endElement
public void characters(char[] ch, int start, int length)
throws XMLException
{
//-- Do delagation if necessary
if (unmarshaller != null) {
unmarshaller.characters(ch, start, length);
}
} //-- characters
} //-- ModelGroupUnmarshaller