/*
* Copyright 2003-2012 JetBrains s.r.o.
*
* 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 org.jetbrains.mps.openapi.persistence;
import org.jetbrains.annotations.NotNull;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
/**
* A data source with multiple input streams, each identified by a unique name.
* FolderDataSource may serve as a good example of a concrete implementation.
*/
public interface MultiStreamDataSource extends DataSource {
@NotNull Iterable<String> getAvailableStreams();
/**
* Access named stream for reading. Caller is responsible to close the stream once done.
* @param name name of the stream to read // fixme what does it mean -- the name???
* @return stream to read from, never <code>null</code>
* @throws IOException if failed to open given named stream
*/
@NotNull
InputStream openInputStream(String name) throws IOException;
/**
* Access named stream for writing. Caller is responsible to close the stream once done.
* @param name name of the stream to write
* @return stream to write to, never <code>null</code>
* @throws IOException
*/
@NotNull
OutputStream openOutputStream(String name) throws IOException;
boolean delete(String name);
}