KÖLL Claus wrote:
so either i will filter some characters from the search string or jackrabbit
should handle it.
i think the second one will be better
JSR 170 specifies a set of characters that need to be escaped if one wishes to
use them as literal instead of the semantics the spec gives them:
"Within the searchexp literal instances of single quote (“'”), double quote
(“"”) and hyphen (“-”) must be escaped with a backslash (“\”). Backslash itself
must therefore also be escaped, ending up as double backslash (“\\”)."
Jackrabbit extended this set to provide additional functionality. e.g. you can
do a fuzzy search: test~
This however means that you need to escape more than the specified set of
characters. Strictly speaking this is a violation of the spec. But without
extending this set of characters additional functionality is very difficult to
implement.
The current set of special characters that need escaping is:
"\\", "+", "-", "!", "(", ")", ":", "^", "[", "]", "\"", "{", "}", "~", "*", "?"
What I propose is to limit the set to only those that are really required. e.g.
the "!" is equivalent to "-" and the keyword NOT. And then clearly document it.
regards
marcel
