00001
00004 package javax.jmdns.impl.constants;
00005
00006 import java.util.logging.Level;
00007 import java.util.logging.Logger;
00008
00014 public enum DNSRecordClass {
00018 CLASS_UNKNOWN("?", 0),
00022 CLASS_IN("in", 1),
00026 CLASS_CS("cs", 2),
00030 CLASS_CH("ch", 3),
00034 CLASS_HS("hs", 4),
00038 CLASS_NONE("none", 254),
00042 CLASS_ANY("any", 255);
00043
00044 private static Logger logger = Logger.getLogger(DNSRecordClass.class.getName());
00045
00050 public static final int CLASS_MASK = 0x7FFF;
00051
00056 public static final int CLASS_UNIQUE = 0x8000;
00057
00061 public static final boolean UNIQUE = true;
00062
00066 public static final boolean NOT_UNIQUE = false;
00067
00068 private final String _externalName;
00069
00070 private final int _index;
00071
00072 DNSRecordClass(String name, int index) {
00073 _externalName = name;
00074 _index = index;
00075 }
00076
00082 public String externalName() {
00083 return _externalName;
00084 }
00085
00091 public int indexValue() {
00092 return _index;
00093 }
00094
00101 public boolean isUnique(int index) {
00102 return (this != CLASS_UNKNOWN) && ((index & CLASS_UNIQUE) != 0);
00103 }
00104
00109 public static DNSRecordClass classForName(String name) {
00110 if (name != null) {
00111 String aName = name.toLowerCase();
00112 for (DNSRecordClass aClass : DNSRecordClass.values()) {
00113 if (aClass._externalName.equals(aName)) return aClass;
00114 }
00115 }
00116 logger.log(Level.WARNING, "Could not find record class for name: " + name);
00117 return CLASS_UNKNOWN;
00118 }
00119
00124 public static DNSRecordClass classForIndex(int index) {
00125 int maskedIndex = index & CLASS_MASK;
00126 for (DNSRecordClass aClass : DNSRecordClass.values()) {
00127 if (aClass._index == maskedIndex) return aClass;
00128 }
00129 logger.log(Level.WARNING, "Could not find record class for index: " + index);
00130 return CLASS_UNKNOWN;
00131 }
00132
00133 @Override
00134 public String toString() {
00135 return this.name() + " index " + this.indexValue();
00136 }
00137
00138 }
