Allowing Double-Byte Characters

If you are using 3DSpace Index with a language that uses double-byte characters, index your data in that language, and define all language parameters to support double-byte characters (see "Before you begin" below).

Otherwise 3DSpace Index may detect documents that contain double-byte characters as belonging to another language.

This task shows you how to:

Deactivate Wildcard Expansion
Use Double-Byte Characters
Use Special Characters

Before you begin: Follow the instructions in Multiple Language Support.

Deactivate Wildcard Expansion

Wildcard search is a pattern-matching feature to broaden the search criteria. As it does not work correctly with languages using double-byte characters (for example, Japanese characters), you must therefore deactivate wildcard expansion in the 3DSpace Index config.XML file.

Edit the 3DSpace Index config.XML file.
Set the ADDWILCARD active property to false, that is <ADDWILDCARD active="false" />.

Use Double-Byte Characters

For double-byte characters, the search engine applies standard transliteration. It finds the exact entry and other related words.

To handle non-ASCII characters in search, use double-byte characters as follows:

To get an exact sequence of characters, use double quotes.
Example: "石と英" matches objects containing these consecutive chars 石と英, but does not match 英と石
If you do not use double quotes, each double-byte character is treated like a term separated with an explicit AND.
Example: 石と英 matches objects containing these chars 石と英, but it also matches 英と石 and と石英 (that is, all "permutations").

Use Special Characters

Some characters are reserved. If you need to use them as words in your query, you must escape them.

To use the following characters as words, use \ (backslash) to escape them:

Round Brackets ( or )
Square Brackets [ or ]
Curly Brackets { or }
Example: to search for term abc{def, enter abc\{def
Colon :
Equal Sign =
Greater than or less than < or >
Double Quote "
Back Slash \. Surround this character by double quotes if you want to use it in a query as a literal character.
Example: To search for term abc\def, enter "abc\def"

Nonexact Match Characters

The following characters are nonexact match chars and return more results that you might expect:

Dot .
Forward Slash /
Equal Sign =

For more exact matches, use double quotes.

Example: if you have the terms abc.def and abc$def in the index, a search for abc.def finds both matches, whereas "abc.def" finds the exact match only.