jakarta.activation.spi.MailcapRegistryProvider Maven / Gradle / Ivy
/*
* Copyright (c) 2021 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package jakarta.activation.spi;
import jakarta.activation.MailcapRegistry;
import java.io.IOException;
import java.io.InputStream;
import java.util.NoSuchElementException;
import java.util.ServiceConfigurationError;
/**
* This interface defines a factory for MailcapRegistry. An
* implementation of this interface should provide instances of the MailcapRegistry
* based on the way how to access the storage for MailcapEntries.
*
* Jakarta Activation uses Service Provider Interface and ServiceLoader
* to obtain an instance of the implementation of the MailcapRegistryProvider.
*/
public interface MailcapRegistryProvider {
/**
* Retrieve an instance of the MailcapRegistry based on the name of the file where the MailcapEntries are stored.
* @param name The name of the file that stores MailcapEntries.
* @return The instance of the MailcapRegistry, or null if none are found.
* @throws IOException If an instance of the MailcapRegistry class cannot be found or loaded.
*/
MailcapRegistry getByFileName(String name) throws IOException;
/**
* Retrieve an instance of the MailcapRegistry based on the InputStream
* that is used to read data from some named resource.
* @param inputStream InputStream for some resource that contains MailcapEntries.
* @return The instance of the MailcapRegistry, or null if none are found.
* @throws IOException If an instance of the MailcapRegistry class cannot be found or loaded.
*/
MailcapRegistry getByInputStream(InputStream inputStream) throws IOException;
/**
* Retrieve an instance of the in-memory implementation of the MailcapRegistry.
* @return In-memory implementation of the MailcapRegistry.
* @throws NoSuchElementException If no implementations were found.
* @throws ServiceConfigurationError If no implementations were loaded.
*/
MailcapRegistry getInMemory();
}