/*
 * The contents of this file are subject to the terms
 * of the Common Development and Distribution License
 * (the "License").  You may not use this file except
 * in compliance with the License.
 *
 * You can obtain a copy of the license at
 * https://jaxp.dev.java.net/CDDLv1.0.html.
 * See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL
 * HEADER in each file and include the License file at
 * https://jaxp.dev.java.net/CDDLv1.0.html
 * If applicable add the following below this CDDL HEADER
 * with the fields enclosed by brackets "[]" replaced with
 * your own identifying information: Portions Copyright
 * [year] [name of copyright owner]
 */

/*
 * $Id: XMLEntityReader.java,v 1.3 2005/11/03 17:02:21 jeffsuttor Exp $
 * @(#)Source.java	1.22 05/11/17
 *
 * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved.
 */

package javax.xml.transform;

/**
 * An object that implements this interface contains the information
 * needed to act as source input (XML source or transformation instructions).
 */
public interface Source {

    /**
     * Set the system identifier for this Source.
     *
     * <p>The system identifier is optional if the source does not
     * get its data from a URL, but it may still be useful to provide one.
     * The application can use a system identifier, for example, to resolve
     * relative URIs and to include in error messages and warnings.</p>
     *
     * @param systemId The system identifier as a URL string.
     */
    public void setSystemId(String systemId);

    /**
     * Get the system identifier that was set with setSystemId.
     *
     * @return The system identifier that was set with setSystemId, or null
     * if setSystemId was not called.
     */
    public String getSystemId();
}