v2/src/marshal/org/apache/xmlbeans/impl/marshal/FailFastErrorHandler.java

/*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 2003 The Apache Software Foundation.  All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
*
* 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 end-user documentation included with the redistribution,
*    if any, must include the following acknowledgment:
*       "This product includes software developed by the
*        Apache Software Foundation (http://www.apache.org/)."
*    Alternately, this acknowledgment may appear in the software itself,
*    if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" must
*    not be used to endorse or promote products derived from this
*    software without prior written permission. For written
*    permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache
*    XMLBeans", nor may "Apache" appear in their name, without prior
*    written permission of the Apache Software Foundation.
*
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation and was
* originally based on software copyright (c) 2000-2003 BEA Systems
* Inc., <http://www.bea.com/>. For more information on the Apache Software
* Foundation, please see <http://www.apache.org/>.
*/

package org.apache.xmlbeans.impl.marshal;

import org.apache.xmlbeans.XmlError;
import org.apache.xmlbeans.XmlRuntimeException;
import org.apache.xmlbeans.impl.marshal.util.collections.EmptyIterator;

import java.util.AbstractCollection;
import java.util.Iterator;

public class FailFastErrorHandler extends AbstractCollection
{
    private static final FailFastErrorHandler INSTANCE =
        new FailFastErrorHandler();

    public static FailFastErrorHandler getInstance()
    {
        return INSTANCE;
    }

    private FailFastErrorHandler()
    {
    }

    //TODO: this is pretty ugly in that we are throwing a Runtime Exception
    //we really need to revisit the entire error propogation strategy.
    public boolean add(Object obj)
    {
        if (obj instanceof XmlError) {
            XmlError err = (XmlError)obj;
            throw new XmlRuntimeException(err);
        }
        throw new XmlRuntimeException("unknown error: " + obj);
    }

    public Iterator iterator()
    {
        return EmptyIterator.getInstance();
    }

    public int size()
    {
        return 0;
    }
}