/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.flink.api.common.io.compression;
import org.apache.flink.annotation.Internal;
import java.io.IOException;
import java.io.InputStream;
import java.util.Collection;
/**
* Creates a new instance of a certain subclass of {@link java.util.zip.InflaterInputStream}.
*/
@Internal
public interface InflaterInputStreamFactory<T extends InputStream> {
/**
* Creates a {@link java.util.zip.InflaterInputStream} that wraps the given input stream.
* @param in is the compressed input stream
* @return the inflated input stream
*/
T create(InputStream in) throws IOException;
/**
* Lists a collection of typical file extensions (e.g., "gz", "gzip") that are associated with the compression
* algorithm in the {@link java.util.zip.InflaterInputStream} {@code T}.
* @return a (possibly empty) collection of lower-case file extensions, without the period
*/
Collection<String> getCommonFileExtensions();
}