7.7.2.1. NormalizerAuto#

7.7.2.1.1. Summary#

Normally you should use NormalizerAuto normalizer. NormalizerAuto was the normalizer for Groonga 2.0.9 or earlier. KEY_NORMALIZE flag in table_create on Groonga 2.0.9 or earlier equals to --normalizer NormalizerAuto option in table_create on Groonga 2.1.0 or later.

NormalizerAuto supports all encoding. It uses Unicode NFKC (Normalization Form Compatibility Composition) for UTF-8 encoding text. It uses encoding specific original normalization for other encodings. The results of those original normalization are similar to NFKC.

7.7.2.1.2. Syntax#

NormalizerAuto hasn’t parameter:

NormalizerAuto

7.7.2.1.3. Usage#

NormalizerAuto normalizes half-width katakana (such as U+FF76 HALFWIDTH KATAKANA LETTER KA) + half-width katakana voiced sound mark (U+FF9E HALFWIDTH KATAKANA VOICED SOUND MARK) to full-width katakana with voiced sound mark (U+30AC KATAKANA LETTER GA). The former is two characters but the latter is one character.

Here is an example that uses NormalizerAuto normalizer:

Execution example:

table_create NormalLexicon TABLE_HASH_KEY ShortText --normalizer NormalizerAuto
# [[0, 1337566253.89858, 0.000355720520019531], true]

7.7.2.1.4. See also#