/**
* Determines if two Records are identical. This compares the name, type, class, and rdata (with
* names canonicalized). The TTLs are not compared.
*
* @param arg The record to compare to
* @return true if the records are equal, false otherwise.
*/
public boolean equals(Object arg) {
if (arg == null || !(arg instanceof Record)) return false;
Record r = (Record) arg;
if (type != r.type || dclass != r.dclass || !name.equals(r.name)) return false;
byte[] array1 = rdataToWireCanonical();
byte[] array2 = r.rdataToWireCanonical();
return Arrays.equals(array1, array2);
}
/**
* Compares this Record to another Object.
*
* @param o The Object to be compared.
* @return The value 0 if the argument is a record equivalent to this record; a value less than 0
* if the argument is less than this record in the canonical ordering, and a value greater
* than 0 if the argument is greater than this record in the canonical ordering. The canonical
* ordering is defined to compare by name, class, type, and rdata.
* @throws ClassCastException if the argument is not a Record.
*/
public int compareTo(Object o) {
Record arg = (Record) o;
if (this == arg) return (0);
int n = name.compareTo(arg.name);
if (n != 0) return (n);
n = dclass - arg.dclass;
if (n != 0) return (n);
n = type - arg.type;
if (n != 0) return (n);
byte[] rdata1 = rdataToWireCanonical();
byte[] rdata2 = arg.rdataToWireCanonical();
for (int i = 0; i < rdata1.length && i < rdata2.length; i++) {
n = (rdata1[i] & 0xFF) - (rdata2[i] & 0xFF);
if (n != 0) return (n);
}
return (rdata1.length - rdata2.length);
}
