parquet.hadoop.metadata.CompressionCodecName Maven / Gradle / Ivy
/**
* Copyright 2012 Twitter, Inc.
*
* 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 parquet.hadoop.metadata;
import parquet.format.CompressionCodec;
public enum CompressionCodecName {
UNCOMPRESSED(null, CompressionCodec.UNCOMPRESSED, ""),
SNAPPY("parquet.hadoop.codec.SnappyCodec", CompressionCodec.SNAPPY, ".snappy"),
GZIP("org.apache.hadoop.io.compress.GzipCodec", CompressionCodec.GZIP, ".gz"),
LZO("com.hadoop.compression.lzo.LzoCodec", CompressionCodec.LZO, ".lzo");
public static CompressionCodecName fromConf(String name) {
if (name == null) {
return UNCOMPRESSED;
}
return valueOf(name.toUpperCase());
}
public static CompressionCodecName fromCompressionCodec(Class clazz) {
if (clazz == null) {
return UNCOMPRESSED;
}
String name = clazz.getName();
for (CompressionCodecName codec : CompressionCodecName.values()) {
if (name.equals(codec.getHadoopCompressionCodecClass())) {
return codec;
}
}
throw new IllegalArgumentException("Unknown compression codec " + clazz);
}
public static CompressionCodecName fromParquet(CompressionCodec codec) {
for (CompressionCodecName codecName : CompressionCodecName.values()) {
if (codec.equals(codecName.parquetCompressionCodec)) {
return codecName;
}
}
throw new IllegalArgumentException("Unknown compression codec " + codec);
}
private final String hadoopCompressionCodecClass;
private final CompressionCodec parquetCompressionCodec;
private final String extension;
private CompressionCodecName(String hadoopCompressionCodecClass, CompressionCodec parquetCompressionCodec, String extension) {
this.hadoopCompressionCodecClass = hadoopCompressionCodecClass;
this.parquetCompressionCodec = parquetCompressionCodec;
this.extension = extension;
}
public String getHadoopCompressionCodecClass() {
return hadoopCompressionCodecClass;
}
public CompressionCodec getParquetCompressionCodec() {
return parquetCompressionCodec;
}
public String getExtension() {
return extension;
}
}