Wildcard search broken

[heikki]

In GN 2.6.0, search queries are subjected to the same Lucene analyzers as the Lucene fields were at index time. This is as such a correct way to deal with Lucene.

However because the standard analyzer used by GeoNetwork, Lucene StandardAnalyzer, tokenizes in such a way that * is considered a delimiter, search queries containing * end up with the * being removed (replaced by whitespace) before the search is executed. That breaks wildcard search.

A solution is to use a custom analyzer, GeoNetworkAnalyzer. It uses WhitespaceTokenizer, LowercaseFilter and ASCIIFoldingFilter, and it is used instead of StandardAnalyzer.

[heikki]

Fixed it and committed fix to trunk and 2.6.x.