/**
* Redistribution and use of this software and associated documentation
* ("Software"), with or without modification, are permitted provided
* that the following conditions are met:
*
* 1. Redistributions of source code must retain copyright
* statements and notices. Redistributions must also contain a
* copy of this document.
*
* 2. Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* 3. The name "Exolab" must not be used to endorse or promote
* 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
* trademark of Intalio, Inc.
*
* 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
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* INTALIO, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Copyright 1999-2000 (C) Intalio Inc. All Rights Reserved.
*
* $Id$
*/
package org.exolab.castor.xml.schema;
import org.exolab.castor.xml.ValidationException;
/**
* Package private class to handles type references.
*
* @author <a href="mailto:berry@intalio.com">Arnaud Berry</a>
* @version $Revision:
**/
public class TypeReference extends XMLType {
/** SerialVersionUID */
private static final long serialVersionUID = -8707313918028332092L;
/**
* The referred type (stored in the schema)
*/
private XMLType referredType= null;
/**
* Returns the referred type
*/
XMLType getType()
{
if (referredType == null)
resolveTypeReference();
return referredType;
}
/**
* Resolves the type reference.
*/
void resolveTypeReference()
{
String name = getName();
if (name == null) return;
Schema schema = getSchema();
if (schema == null) {
//-- ummm we have a problem.
String error = "Schema is null. Reference cannot be resolved.";
throw new IllegalStateException(error);
}
//-- is AnyType? resolve namespace if necessary
//-- and check for 'anyType'.
String canonicalName = name;
String nsPrefix = "";
int colon = name.indexOf(':');
if (colon >= 0) {
canonicalName = name.substring(colon + 1);
nsPrefix = name.substring(0,colon);
}
String ns = schema.getNamespace(nsPrefix);
if (schema.getSchemaNamespace().equals(ns)) {
if (canonicalName.equals(SchemaNames.ANYTYPE)) {
referredType = new AnyType(schema);
return;
}
}
//-- check simpletype first since it has higher precedence
IllegalArgumentException exception = null;
try {
referredType= getSchema().getSimpleType(getName());
}
catch (IllegalArgumentException iax) {
exception = iax;
}
if (referredType != null) {
return;
}
//-- try to find a complex type
referredType = getSchema().getComplexType(getName());
if (referredType != null) {
return;
}
//-- rethrow exception if necessary
if (exception != null) throw exception;
} //- resolveTypeReference
/**
* Sets the parent for this Schema type
*
* @param parent the parent Structure for SchemaType
**/
protected void setParent(Structure parent) {
//-- never used by references
} //-- setParent
/**
* Returns Structure.UNKNOWN
* (This class should not be seen outside ElementDecl anyway)
**/
public short getStructureType() {
return Structure.UNKNOWN;
} //-- getStructureType
/**
* Checks the validity of this type defintion.
*
* @throws ValidationException when this type definition
* is invalid.
**/
public void validate()
throws ValidationException
{
//-- Do nothing
} //-- validate
}