java.fedora.server.validation.ValidationUtility Maven / Gradle / Ivy

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The Fedora Client is a Java Library that allows API access to a Fedora Repository. The client is typically one part of a full Fedora installation.

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/*
 * -----------------------------------------------------------------------------
 *
 * License and Copyright: The contents of this file are subject to 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.fedora-commons.org/licenses.
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
 * the specific language governing rights and limitations under the License.
 *
 * The entire file consists of original code.
 * Copyright © 2008 Fedora Commons, Inc.

 * 
Copyright © 2002-2007 The Rector and Visitors of the University of 
 * Virginia and Cornell University
 
 * All rights reserved.
 *
 * -----------------------------------------------------------------------------
 */
package fedora.server.validation;

import java.net.*;

import fedora.server.errors.*;
import fedora.server.storage.types.DatastreamManagedContent;

/**
 * Misc validation-related functions.
 *
 * @author [email protected]
 * @version $Id: ValidationUtility.java 7438 2008-07-08 06:41:33Z pangloss $
 */
public abstract class ValidationUtility {

    /**
     * Validates the candidate URL. File URLs (e.g. file:///bar/baz) are
     * rejected as malformed.
     * 
     * @param url The URL to validate.
     * @param canBeRelative No effect. All URLs must be absolute.
     * @throws ValidationException if the URL is malformed.
     */
    public static void validateURL(String url, boolean canBeRelative)
            throws ValidationException {
        try {
            URL candidate = new URL(url);
            if (candidate.getProtocol().equals("file")) {
                throw new ValidationException("Malformed URL: invalid protocol: " + url);
            }
        } catch (MalformedURLException e) {
            if (url.startsWith(DatastreamManagedContent.UPLOADED_SCHEME)) {
                return;
            }
            throw new ValidationException("Malformed URL: " + url, e);
        }
    }
}