Package net.sf.saxon.expr.sort

Class RuleBasedSubstringMatcher

java.lang.Object

net.sf.saxon.expr.sort.SimpleCollation

net.sf.saxon.expr.sort.RuleBasedSubstringMatcher

All Implemented Interfaces:

StringCollator, SubstringMatcher

public class RuleBasedSubstringMatcher
extends SimpleCollation
implements SubstringMatcher

This class wraps a RuleBasedCollator to provide a SubstringMatcher. This users the facilities offered by the RuleBasedCollator to implement the XPath functions contains(), starts-with(), ends-with(), substring-before(), and substring-after().

Constructor Summary

Constructors

Constructor	Description
RuleBasedSubstringMatcher(java.lang.String uri, java.text.RuleBasedCollator collator)	Create a RuleBasedSubstringMatcher

Method Summary

Modifier and Type	Method	Description
boolean	contains(UnicodeString s1, UnicodeString s2)	Test whether one string contains another, according to the rules of the XPath contains() function
boolean	endsWith(UnicodeString s1, UnicodeString s2)	Test whether one string ends with another, according to the rules of the XPath ends-with() function
AtomicMatchKey	getCollationKey(UnicodeString s)	Get a collation key for a String.
static void	main(java.lang.String[] args)	Test program to output the sequence of collation element iterators for a given input string
boolean	startsWith(UnicodeString s1, UnicodeString s2)	Test whether one string starts with another, according to the rules of the XPath starts-with() function
UnicodeString	substringAfter(UnicodeString s1, UnicodeString s2)	Return the part of a string after a given substring, according to the rules of the XPath substring-after() function
UnicodeString	substringBefore(UnicodeString s1, UnicodeString s2)	Return the part of a string before a given substring, according to the rules of the XPath substring-before() function

Methods inherited from class net.sf.saxon.expr.sort.SimpleCollation

comparesEqual, compareStrings, getCollationURI, getComparator, getSubstringMatcher, setComparator

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.sf.saxon.lib.StringCollator

comparesEqual, compareStrings, getCollationURI, isEqualToEmpty

Constructor Detail

RuleBasedSubstringMatcher

public RuleBasedSubstringMatcher(java.lang.String uri,
                                 java.text.RuleBasedCollator collator)

Create a RuleBasedSubstringMatcher

Parameters:

uri - the collation URI

collator - the collation to be used

Method Detail

contains

public boolean contains(UnicodeString s1,
                        UnicodeString s2)

Test whether one string contains another, according to the rules of the XPath contains() function

Specified by:

contains in interface SubstringMatcher

Parameters:

s1 - the containing string

s2 - the contained string

Returns:

true iff s1 contains s2

endsWith

public boolean endsWith(UnicodeString s1,
                        UnicodeString s2)

Test whether one string ends with another, according to the rules of the XPath ends-with() function

Specified by:

endsWith in interface SubstringMatcher

Parameters:

s1 - the containing string

s2 - the contained string

Returns:

true iff s1 ends with s2

startsWith

public boolean startsWith(UnicodeString s1,
                          UnicodeString s2)

Test whether one string starts with another, according to the rules of the XPath starts-with() function

Specified by:

startsWith in interface SubstringMatcher

Parameters:

s1 - the containing string

s2 - the contained string

Returns:

true iff s1 starts with s2

substringAfter

public UnicodeString substringAfter(UnicodeString s1,
                                    UnicodeString s2)

Return the part of a string after a given substring, according to the rules of the XPath substring-after() function

Specified by:

substringAfter in interface SubstringMatcher

Parameters:

s1 - the containing string

s2 - the contained string

Returns:

the part of s1 that follows the first occurrence of s2

substringBefore

public UnicodeString substringBefore(UnicodeString s1,
                                     UnicodeString s2)

Return the part of a string before a given substring, according to the rules of the XPath substring-before() function

Specified by:

substringBefore in interface SubstringMatcher

Parameters:

s1 - the containing string

s2 - the contained string

Returns:

the part of s1 that precedes the first occurrence of s2

getCollationKey

public AtomicMatchKey getCollationKey(UnicodeString s)

Get a collation key for a String. The essential property of collation keys is that if (and only if) two strings are equal under the collation, then comparing the collation keys using the equals() method must return true.

Specified by:

getCollationKey in interface StringCollator

Overrides:

getCollationKey in class SimpleCollation

Parameters:

s - the string whose collation key is required

Returns:

the collation key

main

public static void main(java.lang.String[] args)
                 throws java.lang.Exception

Test program to output the sequence of collation element iterators for a given input string

Parameters:

args - command line arguments (collationURI, test-string)

Throws:

java.lang.Exception - if any error occurs