FTS5CustomTokenizer
The protocol for custom FTS5 tokenizers.
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The name of the tokenizer; should uniquely identify your custom tokenizer.
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Creates a custom tokenizer.
The arguments parameter is an array of String built from the CREATE VIRTUAL TABLE statement. In the example below, the arguments will be
["arg1", "arg2"]
.CREATE VIRTUAL TABLE document USING fts5( tokenize='custom arg1 arg2' )
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tokenizerDescriptor(arguments:)
Extension methodCreates an FTS5 tokenizer descriptor.
class MyTokenizer : FTS5CustomTokenizer { ... } db.create(virtualTable: "book", using: FTS5()) { t in let tokenizer = MyTokenizer.tokenizerDescriptor(arguments: ["unicode61", "remove_diacritics", "0"]) t.tokenizer = tokenizer }