net.sf.saxon.sort
public class AtomicSortComparer extends Object implements Comparator, Serializable
Nested Class Summary | |
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static class | AtomicSortComparer.ComparisonKey
Inner class: an object used as a comparison key. |
Constructor Summary | |
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AtomicSortComparer(Comparator collator, XPathContext conversion) |
Method Summary | |
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int | compare(Object a, Object b)
Compare two AtomicValue objects according to the rules for their data type. |
AtomicSortComparer.ComparisonKey | getComparisonKey(AtomicValue a)
Get a comparison key for an object. |
void | setEmptyLeast(boolean least)
Indicate whether NaN should be sorted before or after other float/double values.
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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: <0 if a0 if a>b
Throws: ClassCastException if the objects are not comparable