TemporaryDataStorage.java

/*
 * eID Applet Project.
 * Copyright (C) 2009 FedICT.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version
 * 3.0 as published by the Free Software Foundation.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, see 
 * http://www.gnu.org/licenses/.
 */

/*
 * Copyright (C) 2008-2009 FedICT.
 * This file is part of the eID Applet Project.
 *
 * 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.
 */

package be.fedict.eid.applet.service.signer;

import java.io.InputStream;
import java.io.OutputStream;
import java.io.Serializable;

/**
 * Interface for temporary data storage.
 * 
 * @author Frank Cornelis
 * 
 */
public interface TemporaryDataStorage {

	/**
	 * Gives back the temporary output stream that can be used for data storage.
	 * 
	 * @return
	 */
	OutputStream getTempOutputStream();

	/**
	 * Gives back the temporary input stream for retrieval of the previously
	 * stored data.
	 * 
	 * @return
	 */
	InputStream getTempInputStream();

	/**
	 * Stores an attribute to the temporary data storage.
	 * 
	 * @param attributeName
	 * @param attributeValue
	 */
	void setAttribute(String attributeName, Serializable attributeValue);

	/**
	 * Retrieves an attribute from the temporary data storage.
	 * 
	 * @param attributeName
	 * @return
	 */
	Serializable getAttribute(String attributeName);
}