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use pg::Pg;
use query_builder::locking_clause::{
ForKeyShare, ForNoKeyUpdate, ForShare, ForUpdate, NoModifier, NoWait, SkipLocked,
};
use query_builder::{AstPass, QueryFragment};
use result::QueryResult;
impl QueryFragment<Pg> for ForUpdate {
fn walk_ast(&self, mut out: AstPass<Pg>) -> QueryResult<()> {
out.push_sql(" FOR UPDATE");
Ok(())
}
}
impl QueryFragment<Pg> for ForNoKeyUpdate {
fn walk_ast(&self, mut out: AstPass<Pg>) -> QueryResult<()> {
out.push_sql(" FOR NO KEY UPDATE");
Ok(())
}
}
impl QueryFragment<Pg> for ForShare {
fn walk_ast(&self, mut out: AstPass<Pg>) -> QueryResult<()> {
out.push_sql(" FOR SHARE");
Ok(())
}
}
impl QueryFragment<Pg> for ForKeyShare {
fn walk_ast(&self, mut out: AstPass<Pg>) -> QueryResult<()> {
out.push_sql(" FOR KEY SHARE");
Ok(())
}
}
impl QueryFragment<Pg> for NoModifier {
fn walk_ast(&self, _out: AstPass<Pg>) -> QueryResult<()> {
Ok(())
}
}
impl QueryFragment<Pg> for SkipLocked {
fn walk_ast(&self, mut out: AstPass<Pg>) -> QueryResult<()> {
out.push_sql(" SKIP LOCKED");
Ok(())
}
}
impl QueryFragment<Pg> for NoWait {
fn walk_ast(&self, mut out: AstPass<Pg>) -> QueryResult<()> {
out.push_sql(" NOWAIT");
Ok(())
}
}