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Admarus works well for latin languages. As of today, only english is officially supported. All words with more than 3 letters are indexed. Casing has no effect on search. Automatic search of plurals will be supported soon.
Admarus supports AND, OR and NOT operators. Operators must be uppercase or they will be considered as words.
OR is the default operator, used when none is specified.
bitcoin OR filecoin
bitcoin filecoin
harry AND potter
bitcoin AND NOT(crypto)
These operators have shorthand signs: + or & for AND, / or | for OR, and ! for NOT.
bitcoin / filecoin
bitcoin | filecoin
bitcoin filecoin
Harry + Potter
Harry & Potter
Bitcoin & !crypto
Brackets can be used to group complex expressions.
bitcoin OR (hedera AND hashgraph)
(harry AND potter) OR (mad AND max)
bitcoin AND (NOT(crypto) OR king)
There is another uncommon operator, called NAmong, matching a document when at least n of the k inner expressions match.
2(harry, potter, gryffindor)
2(harry, potter)
harry AND potter
1(harry, potter)
harry OR potter
harry potter
Admarus supports some key-value selectors.
The lang filter allows selecting the language of documents.
Casing of values is ignored.
bitcoin + lang=en
bitcoin + NOT(lang=zh)
bitcoin + (lang=en / lang=fr)
This mechanism was found to be insufficient as autocompletion in many code editors add the english language by default. As a result, many documents in different languages are still marked as english. That's why Admarus also implements automatic detection of the language (but only english is supported yet). The filter is still useful as it allows the query to be routed much more efficiently.
Warning: this section is about a feature that's currently being implemented
Admarus supports schema.org structured data. Documents containing specific objects can be queried using the schema filter.
cat + schema=ImageObject
harry + potter + schema=VideoObject
pizza + schema=Recipe
1984 + schema=Book
leonardo + vinci + schema=Person
5(never, gonna, give, down, rules) + schema=MusicRecording
Documents can match multiple values for a single key.
fireworks + schema=ImageObject + schema=VideoObject
Note that Admarus automatically converts raw img, video, picture and audio html elements into the corresponding schema.org types in order to improve compatibility.