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java.lang.Objectnet.sf.saxon.sort.EmptyGreatestComparer
A Comparer that modifies a base comparer by sorting empty key values and NaN values last (greatest), as opposed to the default which sorts them first.
Constructor Summary | |
EmptyGreatestComparer(AtomicComparer baseComparer)
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Method Summary | |
int |
compare(java.lang.Object a,
java.lang.Object b)
Compare two AtomicValue objects according to the rules for their data type. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface java.util.Comparator |
equals |
Constructor Detail |
public EmptyGreatestComparer(AtomicComparer baseComparer)
Method Detail |
public int compare(java.lang.Object a, java.lang.Object b)
compare
in interface java.util.Comparator
a
- the first object to be compared. It is intended that this should normally be an instance
of AtomicValue, though this restriction is not enforced. If it is a StringValue, the
collator is used to compare the values, otherwise the value must implement the java.util.Comparable
interface.b
- the second object to be compared. This must be comparable with the first object: for
example, if one is a string, they must both be strings.
java.lang.ClassCastException
- if the objects are not comparable
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