jakarta.mail.EncodingAware Maven / Gradle / Ivy
/*
* Copyright (c) 1997, 2023 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.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package jakarta.mail;
/**
* A {@link jakarta.activation.DataSource DataSource} that also implements
* EncodingAware may specify the Content-Transfer-Encoding
* to use for its data. Valid Content-Transfer-Encoding values specified
* by RFC 2045 are "7bit", "8bit", "quoted-printable", "base64", and "binary".
*
* For example, a {@link jakarta.activation.FileDataSource FileDataSource}
* could be created that forces all files to be base64 encoded:
*
* public class Base64FileDataSource extends FileDataSource
* implements EncodingAware {
* public Base64FileDataSource(File file) {
* super(file);
* }
*
* // implements EncodingAware.getEncoding()
* public String getEncoding() {
* return "base64";
* }
* }
*
*
* @author Bill Shannon
* @since JavaMail 1.5
*/
public interface EncodingAware {
/**
* Return the MIME Content-Transfer-Encoding to use for this data,
* or null to indicate that an appropriate value should be chosen
* by the caller.
*
* @return the Content-Transfer-Encoding value, or null
*/
String getEncoding();
}