org.eclipse.persistence.internal.jaxb.DefaultElementConverter Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of eclipselink Show documentation

EclipseLink build based upon Git transaction f2b9fc5

There is a newer version: 5.0.0-B03

/*
 * Copyright (c) 1998, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0,
 * or the Eclipse Distribution License v. 1.0 which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
 */

// Contributors:
// bdoughan - July 30/2009 - 2.0 - Initial implementation
package org.eclipse.persistence.internal.jaxb;

import org.eclipse.persistence.mappings.DatabaseMapping;
import org.eclipse.persistence.oxm.XMLMarshaller;
import org.eclipse.persistence.oxm.XMLUnmarshaller;
import org.eclipse.persistence.oxm.mappings.converters.XMLConverter;
import org.eclipse.persistence.sessions.Session;
import org.w3c.dom.Element;

/**
 * If there is no text node then apply the default value.
 *  @XmlElement(required = true, defaultValue = "default")
 * protected Object a;
 */
public class DefaultElementConverter implements XMLConverter {

    private String defaultValue;

    public DefaultElementConverter(String defaultValue) {
        this.defaultValue = defaultValue;
    }

    public void initialize(DatabaseMapping mapping, Session session) {
    }

    public Object convertDataValueToObjectValue(Object dataValue, Session session) {
        if(dataValue instanceof Element) {
            Element element = (Element) dataValue;
            if(element.getTextContent().length() == 0) {
                element.setTextContent(defaultValue);
            }
        }
        return dataValue;
    }

    public Object convertObjectValueToDataValue(Object objectValue, Session session) {
        return objectValue;
    }

    public boolean isMutable() {
        return false;
    }

    public Object convertDataValueToObjectValue(Object dataValue, Session session, XMLUnmarshaller unmarshaller) {
        return convertDataValueToObjectValue(dataValue, session);
    }

    public Object convertObjectValueToDataValue(Object objectValue, Session session, XMLMarshaller marshaller) {
        return convertObjectValueToDataValue(objectValue, session);
    }

}