Lib.rs

RQL filter

Operators

Implemented:

• Relational

  • exists(property)

• Comparison

  • eq(property,value)
  • ne(property,value)
  • lt(property,value)
  • gt(property,value)
  • le(property,value)
  • ge(property,value)

• Search

  • like(property,pattern)

• List

  • in(property,(value1,...))
  • out(property,(value1,...))

• Logical

  • not(query)
  • and(query1,query2,...)
  • or(query1,query2,...)

Basic usage

use xyz_validator::{RqlValidator, ValidatorInterface};

fn main() {
    let valid_rql_statement = "or(and(eq(name,John),eq(surname,Doe)),eq(surname,Smith))".to_owned();
    let rql_validator: Box<dyn ValidatorInterface> = Box::new(RqlValidator::new(None));
    assert!(rql_validator.is_valid(valid_rql_statement));

    //to view errors we should define a callback function for `String` argument
    fn your_handle_error_function(your_var: String) {
        eprintln!("{}", your_var);
    }

    let rql_validator: Box<dyn ValidatorInterface> =
        Box::new(RqlValidator::new(Some(your_handle_error_function)));

    let invalid_rql_statement = "and(eq(name,John))".to_owned();
    assert!(!rql_validator.is_valid(invalid_rql_statement));
    //Operator `and` should have at least 2 nested queries
}