001
014
015 package com.liferay.portal.fabric.netty.fileserver;
016
017 import java.util.EnumSet;
018 import java.util.HashMap;
019 import java.util.Map;
020 import java.util.zip.Deflater;
021
022
025 public enum CompressionLevel {
026
027 BEST_COMPRESSION(Deflater.BEST_COMPRESSION),
028 BEST_SPEED(Deflater.BEST_SPEED),
029 DEFAULT_COMPRESSION(Deflater.DEFAULT_COMPRESSION), LEVEL_2(2), LEVEL_3(3),
030 LEVEL_4(4), LEVEL_5(5), LEVEL_6(6), LEVEL_7(7), LEVEL_8(8),
031 NO_COMPRESSION(Deflater.NO_COMPRESSION);
032
033 public static CompressionLevel getCompressionLevel(int level) {
034 CompressionLevel compressionLevel = _compressionLevels.get(level);
035
036 if (compressionLevel == null) {
037 throw new IllegalArgumentException(
038 "Compression level " + level +
039 " is not within the range of -1 and 9");
040 }
041
042 return compressionLevel;
043 }
044
045 public int getLevel() {
046 return _level;
047 }
048
049 private CompressionLevel(int level) {
050 _level = level;
051 }
052
053 private static final Map<Integer, CompressionLevel> _compressionLevels =
054 new HashMap<>();
055
056 static {
057 for (CompressionLevel compressionLevel : EnumSet.allOf(
058 CompressionLevel.class)) {
059
060 _compressionLevels.put(compressionLevel._level, compressionLevel);
061 }
062 }
063
064 private final int _level;
065
066 }