Prototype of a natural version of evitaQL language used by evitaDB. This project was created as a way to explore ANTLR4 capabilities.
It converts following grammar
gimme
page of 1 and 20
and also
facet summary with 'COUNTS'
and also
entities with
attribute of 'code' and 'name'
from collection of 'product'
such that
attribute 'code' equals to 'macbook'
otherwise
attribute 'name' starts with 'Mac'
and also
price is in price list 'vip' and 'basic'
in order of
price in ascending natural order
and also
attribute 'code' in descending natural order
into the original evitaDB's evitaQL language
query(
collection("product"),
filterBy(
and(
or(
attributeEquals("code", "macbook"),
attributeStartsWith("name", "Mac")
),
priceInPriceLists("vip", "basic")
)
),
orderBy(
priceNatural(),
attributeNatural("code", OrderDirection.DESC)
),
require(
page(1, 20),
facetSummary(),
entityFetch(
attributeContent("code", "name")
)
)
)
It can be seen in action in io.evitadb.api.query.natural.parser.ParserTest.