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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,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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package com.sun.tools.internal.xjc.api.impl.s2j;

import javax.xml.bind.JAXBElement;

import javax.xml.namespace.QName;

import com.sun.tools.internal.xjc.outline.FieldOutline;

import com.sun.tools.internal.xjc.outline.ClassOutline;

import com.sun.tools.internal.xjc.outline.FieldAccessor;

import com.sun.tools.internal.xjc.outline.Outline;

import com.sun.tools.internal.xjc.model.CPropertyInfo;

import com.sun.tools.internal.xjc.model.CElementInfo;

import com.sun.tools.internal.xjc.model.CReferencePropertyInfo;

import com.sun.codemodel.internal.JExpression;

import com.sun.codemodel.internal.JBlock;

import com.sun.codemodel.internal.JExpr;

import com.sun.codemodel.internal.JCodeModel;

import com.sun.codemodel.internal.JInvocation;

/**

 * {@link FieldOutline} that wraps another {@link FieldOutline}

 * and allows JAX-WS to access values without using about

 * {@link JAXBElement}.

 *

 * <p>

 * That means if a value is requested, we unwrap JAXBElement

 * and give it to them. If a value is set, we wrap that into

 * JAXBElement, etc.

 *

 * <p>

 * This can be used only with {@link CReferencePropertyInfo}

 * (or else it won't be {@link JAXBElement),

 * with one {@link CElementInfo} (or else we can't infer the tag name.)

 *

 * @author Kohsuke Kawaguchi

 */

abstract class ElementAdapter implements FieldOutline {

    protected final FieldOutline core;

    /**

     * The only one {@link CElementInfo} that can be in the property.

     */

    protected final CElementInfo ei;

    public ElementAdapter(FieldOutline core, CElementInfo ei) {

        this.core = core;

        this.ei = ei;

    }

    public ClassOutline parent() {

        return core.parent();

    }

    public CPropertyInfo getPropertyInfo() {

        return core.getPropertyInfo();

    }

    protected final Outline outline() {

        return core.parent().parent();

    }

    protected final JCodeModel codeModel() {

        return outline().getCodeModel();

    }

    protected abstract class FieldAccessorImpl implements FieldAccessor {

        final FieldAccessor acc;

        public FieldAccessorImpl(JExpression target) {

            acc = core.create(target);

        }

        public void unsetValues(JBlock body) {

            acc.unsetValues(body);

        }

        public JExpression hasSetValue() {

            return acc.hasSetValue();

        }

        public FieldOutline owner() {

            return ElementAdapter.this;

        }

        public CPropertyInfo getPropertyInfo() {

            return core.getPropertyInfo();

        }

        /**

         * Wraps a type value into a {@link JAXBElement}.

         */

        protected final JInvocation createJAXBElement(JExpression $var) {

            JCodeModel cm = codeModel();

            return JExpr._new(cm.ref(JAXBElement.class))

                .arg(JExpr._new(cm.ref(QName.class))

                    .arg(ei.getElementName().getNamespaceURI())

                    .arg(ei.getElementName().getLocalPart()))

                .arg(getRawType().boxify().erasure().dotclass())

                .arg($var);

        }

    }

}