| /* |
| * 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.iceberg; |
| |
| import org.apache.iceberg.types.Comparators; |
| |
| /** |
| * Enum of supported file formats. |
| */ |
| public enum FileFormat { |
| ORC("orc", true), |
| PARQUET("parquet", true), |
| AVRO("avro", true), |
| METADATA("metadata.json", false); |
| |
| private final String ext; |
| private final boolean splittable; |
| |
| FileFormat(String ext, boolean splittable) { |
| this.ext = "." + ext; |
| this.splittable = splittable; |
| } |
| |
| public boolean isSplittable() { |
| return splittable; |
| } |
| |
| /** |
| * Returns filename with this format's extension added, if necessary. |
| * |
| * @param filename a filename or path |
| * @return if the ext is present, the filename, otherwise the filename with ext added |
| */ |
| public String addExtension(String filename) { |
| if (filename.endsWith(ext)) { |
| return filename; |
| } |
| return filename + ext; |
| } |
| |
| public static FileFormat fromFileName(CharSequence filename) { |
| for (FileFormat format : FileFormat.values()) { |
| int extStart = filename.length() - format.ext.length(); |
| if (Comparators.charSequences().compare(format.ext, filename.subSequence(extStart, filename.length())) == 0) { |
| return format; |
| } |
| } |
| |
| return null; |
| } |
| } |