public class DoubleSortComparer extends java.lang.Object implements AtomicComparer
?????? | ????? |
---|---|
int |
compareAtomicValues(AtomicValue a,
AtomicValue b)
Compare two AtomicValue objects according to the rules for their data type.
|
boolean |
comparesEqual(AtomicValue a,
AtomicValue b)
Test whether two values compare equal.
|
ComparisonKey |
getComparisonKey(AtomicValue a)
Get a comparison key for an object.
|
static DoubleSortComparer |
getInstance()
Get the singular instance of this class
|
AtomicComparer |
provideContext(XPathContext context)
Supply the dynamic context in case this is needed for the comparison
|
public static DoubleSortComparer getInstance()
public AtomicComparer provideContext(XPathContext context)
provideContext
???? AtomicComparer
context
- the dynamic evaluation contextpublic int compareAtomicValues(AtomicValue a, AtomicValue b)
compareAtomicValues
???? AtomicComparer
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 comparablepublic boolean comparesEqual(AtomicValue a, AtomicValue b)
comparesEqual
???? AtomicComparer
a
- the first object to be compared.b
- the second object to be compared.public ComparisonKey getComparisonKey(AtomicValue a)
getComparisonKey
???? AtomicComparer