net.sf.saxon.sort
Class UppercaseFirstComparer

java.lang.Object
  net.sf.saxon.sort.UppercaseFirstComparer

All Implemented Interfaces:

Serializable, StringCollator

public class UppercaseFirstComparer
extends Object
implements StringCollator, Serializable

A Comparer used for comparing strings, with upper case collated before lower case if the strings are otherwise equal. This is implemented as a wrapper around a collator that compares the strings ignoring case.

Author:

Michael H. Kay

See Also:

Serialized Form

Constructor Summary

UppercaseFirstComparer(StringCollator base)

Method Summary

int	compareStrings(String a, String b) Compare two string objects: case is irrelevant, unless the strings are equal ignoring case, in which case uppercase comes first.
Object	getCollationKey(String s, Platform platform) Get a collation key for two Strings.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

UppercaseFirstComparer

public UppercaseFirstComparer(StringCollator base)

Method Detail

compareStrings

public int compareStrings(String a,
                          String b)

Compare two string objects: case is irrelevant, unless the strings are equal ignoring case, in which case uppercase comes first.

Specified by:

compareStrings in interface StringCollator

Parameters:

a - the first string

b - the second string

Returns:

<0 if a0 if a>b

Throws:

ClassCastException - if the objects do not implement the CharSequence interface

getCollationKey

public Object getCollationKey(String s,
                              Platform platform)

Get a collation key for two Strings. The essential property of collation keys is that if two values are equal under the collation, then the collation keys are compare correctly under the equals() method.

Specified by:

getCollationKey in interface StringCollator