/**
* 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
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* 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;
/**
* Package private class to handle the case where a simple type
* can't be instanciated because its parent has not yet been read.
*
* @author <a href="mailto:berry@intalio.com">Arnaud Berry</a>
* @version $Revision:
**/
class DeferredSimpleType extends SimpleType {
/** SerialVersionUID */
private static final long serialVersionUID = 1335439479275580848L;
/**
* An instance of ListType or of a class derived from AtomicType
* created the first time getType is called from the information contained
* in this simple type instance.
**/
private SimpleType instance= null;
/**
* The parent's name.
**/
private String baseTypeName = null;
/**
* The number of times createInstance was called (to guess when there is a cyclic
* reference (type A extends B; type B extends A) in the schema types)
* TODO: real cycle detection.
*/
private int createInstanceCallsCount= 0;
/**
* Creates a new default DeferredSimpleType.
**/
DeferredSimpleType() {
super();
} //-- DeferredSimpleType
/**
* Creates a new DeferredSimpleType
*
* @param name the name of the SimpleType.
**/
DeferredSimpleType(String name) {
super();
setName(name);
} //-- DeferredSimpleType
/**
* Creates a new DeferredSimpleType
*
* @param name the name of the SimpleType.
* @param schema the parent Schema of the SimpleType.
**/
DeferredSimpleType(String name, Schema schema) {
setName(name);
setSchema(schema);
} //-- DeferredSimpleType
/**
* Sets the name of the base type that couldn't be resolved
* when this type was created.
*/
public void setBaseTypeName(String baseTypeName) {
this.baseTypeName= baseTypeName;
}
/**
* Package private getter of the simpleType instance.
*/
XMLType getType() {
if (instance == null) createInstance();
return instance;
}
/**
* Resolves the parents of this simple type in order to create the
* instance of the appropriate class deriving from simple type and fill it.
*/
protected synchronized void createInstance()
{
createInstanceCallsCount++;
if (createInstanceCallsCount >= 666) {
String err = "cyclic type definition involving the type: " + getName();
throw new IllegalStateException(err);
}
//create the type, false means we don't want a DeferredSimpleType to be returned.
instance= Schema.getTypeFactory().createUserSimpleType( getSchema(),
getName(),
baseTypeName,
getDerivationMethod(),
false);
if (instance != null) {
copyFacets(instance);
instance.setParent(getParent());
}
}
/**
* Returns Structure.UNKNOWN
* (This class should not be seen outside AttributeDecl and ElementDecl anyway)
**/
public short getStructureType() {
return Structure.UNKNOWN;
} //-- getStructureType
/**
* Overridden to return the local copy of the base type's name we own.
* @see XMLType#getBaseTypeName()
*/
public String getBaseTypeName() {
return baseTypeName;
}
}