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https://issues.apache.org/jira/browse/LUCENE-1398?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Koji Sekiguchi updated LUCENE-1398:
-----------------------------------
Attachment: LUCENE-1398.patch
Patch attached. The patch includes a new constructor of PrefixQuery:
{code:java}
public PrefixQuery(Term prefix, boolean reverse) {
if(reverse){
String s = prefix.text();
int len = s.length();
if( len <= 1 ){
this.prefix = prefix;
return;
}
StringBuffer sb = new StringBuffer(len);
for( int i = 0; i < len; i++ ){
sb.append( s.charAt( len - i - 1 ) );
}
this.prefix = new Term(prefix.field(),sb.toString());
}
else
this.prefix = prefix;
}
{code}
so that you can extend PrefixQuery to have SuffixQuery:
{code:java}
class SuffixQuery extends PrefixQuery {
public SuffixQuery( Term term ){
super( term, true );
}
}
{code}
> Add ReverseStringFilter
> -----------------------
>
> Key: LUCENE-1398
> URL: https://issues.apache.org/jira/browse/LUCENE-1398
> Project: Lucene - Java
> Issue Type: New Feature
> Components: Analysis
> Reporter: Koji Sekiguchi
> Priority: Trivial
> Attachments: LUCENE-1398.patch
>
>
> add ReverseStringFilter and ReverseStringAnalyzer that can be used for
> backword much. For Example, "*ry", "*ing", "*ber".
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