URLStringConverter.java

/**********************************************************************
Copyright (c) 2008 Andy Jefferson and others. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Contributors:
    ...
**********************************************************************/
package org.datanucleus.store.types.converters;

import java.net.MalformedURLException;
import java.net.URL;

import org.datanucleus.exceptions.NucleusDataStoreException;
import org.datanucleus.util.Localiser;
import org.datanucleus.util.StringUtils;

/**
 * Class to handle the conversion between java.net.URL and a String form.
 */
public class URLStringConverter implements TypeConverter<URL, String>
{
    private static final long serialVersionUID = 536399905653117952L;

    public URL toMemberType(String str)
    {
        if (StringUtils.isWhitespace(str))
        {
            return null;
        }

        URL url = null;
        try
        {
            url = new java.net.URL(str.trim());
        }
        catch (MalformedURLException mue)
        {
            throw new NucleusDataStoreException(Localiser.msg("016002", str, URL.class.getName()), mue);
        }
        return url;
    }

    public String toDatastoreType(URL url)
    {
        return url != null ? url.toString() : null;
    }
}