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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

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 *

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package com.sun.xml.internal.bind.v2.runtime.reflect;

import javax.xml.bind.annotation.adapters.XmlAdapter;

import javax.xml.bind.JAXBException;

import com.sun.xml.internal.bind.v2.runtime.Coordinator;

import com.sun.xml.internal.bind.v2.runtime.XMLSerializer;

import com.sun.xml.internal.bind.api.AccessorException;

import org.xml.sax.SAXException;

/**

 * {@link Lister} that adapts individual item types.

 */

final class AdaptedLister<BeanT,PropT,InMemItemT,OnWireItemT,PackT> extends Lister<BeanT,PropT,OnWireItemT,PackT> {

    private final Lister<BeanT,PropT,InMemItemT,PackT> core;

    private final Class<? extends XmlAdapter<OnWireItemT,InMemItemT>> adapter;

    /*package*/ AdaptedLister(

        Lister<BeanT,PropT,InMemItemT,PackT> core,

        Class<? extends XmlAdapter<OnWireItemT,InMemItemT>> adapter) {

        this.core = core;

        this.adapter = adapter;

    }

    private XmlAdapter<OnWireItemT,InMemItemT> getAdapter() {

        return Coordinator._getInstance().getAdapter(adapter);

    }

    public ListIterator<OnWireItemT> iterator(PropT prop, XMLSerializer context) {

        return new ListIteratorImpl( core.iterator(prop,context), context );

    }

    public PackT startPacking(BeanT bean, Accessor<BeanT, PropT> accessor) throws AccessorException {

        return core.startPacking(bean,accessor);

    }

    public void addToPack(PackT pack, OnWireItemT item) throws AccessorException {

        InMemItemT r;

        try {

            r = getAdapter().unmarshal(item);

        } catch (Exception e) {

            throw new AccessorException(e);

        }

        core.addToPack(pack,r);

    }

    public void endPacking(PackT pack, BeanT bean, Accessor<BeanT,PropT> accessor) throws AccessorException {

        core.endPacking(pack,bean,accessor);

    }

    public void reset(BeanT bean, Accessor<BeanT, PropT> accessor) throws AccessorException {

        core.reset(bean,accessor);

    }

    private final class ListIteratorImpl implements ListIterator<OnWireItemT> {

        private final ListIterator<InMemItemT> core;

        private final XMLSerializer serializer;

        public ListIteratorImpl(ListIterator<InMemItemT> core,XMLSerializer serializer) {

            this.core = core;

            this.serializer = serializer;

        }

        public boolean hasNext() {

            return core.hasNext();

        }

        public OnWireItemT next() throws SAXException, JAXBException {

            InMemItemT next = core.next();

            try {

                return getAdapter().marshal(next);

            } catch (Exception e) {

                serializer.reportError(null,e);

                return null; // recover this error by returning null

            }

        }

    }

}