com.saxonica.deploy
Interface SimpleAtomicComparer

public interface SimpleAtomicComparer

Simple comparer interface for comparing two atomic values. This comparer is used in compiled code only: note that it is committed to one of the specific comparison operators such as gt, lt, ge etc.

Method Summary

boolean

compare(AtomicValue a, AtomicValue b) Compare two AtomicValue objects according to the rules for their data type.

Method Detail

compare

boolean compare(AtomicValue a,
                AtomicValue b)

Compare two AtomicValue objects according to the rules for their data type. UntypedAtomic values are compared as if they were strings; if different semantics are wanted, the conversion must be done by the caller.

Parameters:

a - the first object to be compared. It is intended that this should 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.

Returns:

true if the comparison succeeds

Throws:

ClassCastException - if the objects are not comparable