Search Query Grammar

This page provides a BNF description for Hub query grammar.

Grammar

            <Query> ::= <OrExpression> EOF
            <OrExpression> ::= <AndExpression> "or" <AndExpression>
            <AndExpression> ::= <SignExpression> "and" <SignExpression>
            <SignExpression> ::= ("not")? <Item>
            <Item> ::= <Field>| <Tuple>| <Paren>| <Phrase>| <Text>
            <Field> ::= <FieldName> ":" <FieldValue>
            <Tuple> ::= <TupleName> "(" <Field> <Field>* ")"
            <Paren> ::= "(" <OrExpression>| EOF ")"
        

Grammar is case-insensitive.

<Text> — an arbitrary text.
<Phrase> — the exact text phrase to match.
<FieldName> — a field name. For example, id, name, login, and so on. This covers all available JSON field names, plus a number of additional names like "is", "in", "has", and so on.
<FieldValue> — an attribute value. For example, admin, global, {my global permission}. Enclose each value that contains several words separated with spaces in curly braces { }.
<Tuple> — conditional match by fields. For example, access(project: "myProject", with: "myRole").

Samples

Query	Description
`name: admin`	Returns all users with the `visibleName` "admin".
`is: banned`	Returns the list of all banned users.
`access(project: MyProject, with: {Read Auth Module})`	Returns a list of users that can access the project "MyProject" with the permission "Read Auth Module".

Last modified: 08 March 2021