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use std::os::raw::c_int;
use ffi;
pub use ffi::Limit;
use Connection;
impl Connection {
pub fn limit(&self, limit: Limit) -> i32 {
let c = self.db.borrow();
unsafe { ffi::sqlite3_limit(c.db(), limit as c_int, -1) }
}
pub fn set_limit(&self, limit: Limit, new_val: i32) -> i32 {
let c = self.db.borrow_mut();
unsafe { ffi::sqlite3_limit(c.db(), limit as c_int, new_val) }
}
}
#[cfg(test)]
mod test {
use ffi::Limit;
use Connection;
#[test]
fn test_limit() {
let db = Connection::open_in_memory().unwrap();
db.set_limit(Limit::SQLITE_LIMIT_LENGTH, 1024);
assert_eq!(1024, db.limit(Limit::SQLITE_LIMIT_LENGTH));
db.set_limit(Limit::SQLITE_LIMIT_SQL_LENGTH, 1024);
assert_eq!(1024, db.limit(Limit::SQLITE_LIMIT_SQL_LENGTH));
db.set_limit(Limit::SQLITE_LIMIT_COLUMN, 64);
assert_eq!(64, db.limit(Limit::SQLITE_LIMIT_COLUMN));
db.set_limit(Limit::SQLITE_LIMIT_EXPR_DEPTH, 256);
assert_eq!(256, db.limit(Limit::SQLITE_LIMIT_EXPR_DEPTH));
db.set_limit(Limit::SQLITE_LIMIT_COMPOUND_SELECT, 32);
assert_eq!(32, db.limit(Limit::SQLITE_LIMIT_COMPOUND_SELECT));
db.set_limit(Limit::SQLITE_LIMIT_FUNCTION_ARG, 32);
assert_eq!(32, db.limit(Limit::SQLITE_LIMIT_FUNCTION_ARG));
db.set_limit(Limit::SQLITE_LIMIT_ATTACHED, 2);
assert_eq!(2, db.limit(Limit::SQLITE_LIMIT_ATTACHED));
db.set_limit(Limit::SQLITE_LIMIT_LIKE_PATTERN_LENGTH, 128);
assert_eq!(128, db.limit(Limit::SQLITE_LIMIT_LIKE_PATTERN_LENGTH));
db.set_limit(Limit::SQLITE_LIMIT_VARIABLE_NUMBER, 99);
assert_eq!(99, db.limit(Limit::SQLITE_LIMIT_VARIABLE_NUMBER));
if ::version_number() >= 3006018 {
db.set_limit(Limit::SQLITE_LIMIT_TRIGGER_DEPTH, 32);
assert_eq!(32, db.limit(Limit::SQLITE_LIMIT_TRIGGER_DEPTH));
}
if ::version_number() >= 3008007 {
db.set_limit(Limit::SQLITE_LIMIT_WORKER_THREADS, 2);
assert_eq!(2, db.limit(Limit::SQLITE_LIMIT_WORKER_THREADS));
}
}
}