Tamino XQuery User Guide - Software AG Documentation

Text Retrieval
path separator is not defined as a regular character, it will be interpreted as a delimiter. Using the
default settings, the pattern in function call tf:containsText($path, "*\\*") will thus be interpreted
as if "* *" were used, since the escapecard character tries to mask an invalid character and
the text retrieval system uses a delimiter instead. This would yield "true", since there are two occurrences
of two adjacent words separated by a space character ("Program Files" and "Software
AG"). In cases like these you should ensure that the transliteration is appropriately defined according
to what your application expects.
Note: In contrast to "*", the characters "\" and "?" are normally not classified as regular
characters in the collection ino:transliteration. See the section Customizing Transliterations
for instructions how to customize this special collection.
Customizing Special Character Settings
If you use the default tokenizer (white space-separated), you can customize the settings for the
special characters used in pattern matching. They are declared as attributes to ino:transliteration
in the special collection ino:vocabulary:
escapecard character
maskcard character
wildcard character
ino:escapechar
ino:maskchar
ino:wildchar
To change the value of any of these attributes, you can use a query similar to the following, which
sets the value of the maskcard character to the default value:
declare namespace ino="http://namespaces.softwareag.com/tamino/response2"
update insert attribute ino:maskchar {"?"}
into input()/ino:transliteration
You can check your changes with the following query:
declare namespace ino="http://namespaces.softwareag.com/tamino/response2"
for $a in input()/ino:transliteration/@*
return $a
Note that only attributes that have been modified are returned.
XQuery User Guide
103