public class DoubleSortComparer extends java.lang.Object implements AtomicComparer
Modifier and Type | Method and Description |
---|---|
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.
|
StringCollator |
getCollator()
Get the collation used by this AtomicComparer if any
|
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
|
java.lang.String |
save()
Create a string representation of this AtomicComparer that can be saved in a compiled
package and used to reconstitute the AtomicComparer when the package is reloaded
|
public static DoubleSortComparer getInstance()
public StringCollator getCollator()
AtomicComparer
getCollator
in interface AtomicComparer
public AtomicComparer provideContext(XPathContext context)
provideContext
in interface AtomicComparer
context
- the dynamic evaluation contextpublic int compareAtomicValues(AtomicValue a, AtomicValue b)
compareAtomicValues
in interface 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
in interface AtomicComparer
a
- the first object to be compared.b
- the second object to be compared.public java.lang.String save()
save
in interface AtomicComparer
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