ch.ethz.mxquery.sms.ftstore
Class WildcardUtils

java.lang.Object
  ch.ethz.mxquery.sms.ftstore.WildcardUtils

public class WildcardUtils
extends java.lang.Object

Helper class for Wildcard usage FIXME: can be done more efficient when using regex, but not available with CLDC API

Constructor Summary

WildcardUtils()

Method Summary

java.util.Vector	checkAgainstOriginalQueryMultipleWildcard(java.util.Vector words, java.util.Vector wildcardPositionPairs) checks the found words against the wildcards and their positions needs to be done as n-gram index returns false positives
boolean	checkForWildcards(java.lang.String phrase) checks for wildcards in the phrase "phrase"
boolean	contains(java.lang.String s, java.lang.String subs) returns true if string subs is contained in string s
java.lang.String	getPrefix(java.lang.String word, java.lang.String wildcard) returns the prefix of word "word" containing wildcard "wildcard"
java.lang.String[]	getPrefixAndSuffix(java.lang.String word, java.lang.String wildcard) returns the prefix and suffix of word "word" containing wildcard "wildcard"
java.lang.String	getSuffix(java.lang.String word, java.lang.String wildcard) returns the suffix of word "word" containing wildcard "wildcard"
java.util.Vector	getWildcardPosition(java.lang.String word) returns the position of the wildcards (infix, prefix or suffix)
java.util.Vector	getWildcards(java.lang.String word) returns the wildcards contained in word "word"
java.util.Vector	parseWord(java.lang.String word) returns wildcards in "word" (if mutiple wildcards are contained in one word

Methods inherited from class java.lang.Object

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

Constructor Detail

WildcardUtils

public WildcardUtils()

Method Detail

checkForWildcards

public boolean checkForWildcards(java.lang.String phrase)

checks for wildcards in the phrase "phrase"

parseWord

public java.util.Vector parseWord(java.lang.String word)

returns wildcards in "word" (if mutiple wildcards are contained in one word

getWildcardPosition

public java.util.Vector getWildcardPosition(java.lang.String word)

returns the position of the wildcards (infix, prefix or suffix)

getWildcards

public java.util.Vector getWildcards(java.lang.String word)

returns the wildcards contained in word "word"

getPrefix

public java.lang.String getPrefix(java.lang.String word,
                                  java.lang.String wildcard)

returns the prefix of word "word" containing wildcard "wildcard"

getSuffix

public java.lang.String getSuffix(java.lang.String word,
                                  java.lang.String wildcard)

returns the suffix of word "word" containing wildcard "wildcard"

getPrefixAndSuffix

public java.lang.String[] getPrefixAndSuffix(java.lang.String word,
                                             java.lang.String wildcard)

returns the prefix and suffix of word "word" containing wildcard "wildcard"

contains

public boolean contains(java.lang.String s,
                        java.lang.String subs)

returns true if string subs is contained in string s

checkAgainstOriginalQueryMultipleWildcard

public java.util.Vector checkAgainstOriginalQueryMultipleWildcard(java.util.Vector words,
                                                                  java.util.Vector wildcardPositionPairs)

checks the found words against the wildcards and their positions needs to be done as n-gram index returns false positives