diesel/pg/query_builder/
limit_offset.rsuse crate::pg::Pg;
use crate::query_builder::limit_offset_clause::{BoxedLimitOffsetClause, LimitOffsetClause};
use crate::query_builder::{AstPass, IntoBoxedClause, QueryFragment};
use crate::result::QueryResult;
impl<'a, L, O> IntoBoxedClause<'a, Pg> for LimitOffsetClause<L, O>
where
L: QueryFragment<Pg> + Send + 'a,
O: QueryFragment<Pg> + Send + 'a,
{
type BoxedClause = BoxedLimitOffsetClause<'a, Pg>;
fn into_boxed(self) -> Self::BoxedClause {
BoxedLimitOffsetClause {
limit: Some(Box::new(self.limit_clause)),
offset: Some(Box::new(self.offset_clause)),
}
}
}
impl<'a> QueryFragment<Pg> for BoxedLimitOffsetClause<'a, Pg> {
fn walk_ast<'b>(&'b self, mut out: AstPass<'_, 'b, Pg>) -> QueryResult<()> {
if let Some(ref limit) = self.limit {
limit.walk_ast(out.reborrow())?;
}
if let Some(ref offset) = self.offset {
offset.walk_ast(out.reborrow())?;
}
Ok(())
}
}
impl<L, O> QueryFragment<Pg> for LimitOffsetClause<L, O>
where
L: QueryFragment<Pg>,
O: QueryFragment<Pg>,
{
fn walk_ast<'b>(&'b self, mut out: AstPass<'_, 'b, Pg>) -> QueryResult<()> {
self.limit_clause.walk_ast(out.reborrow())?;
self.offset_clause.walk_ast(out.reborrow())?;
Ok(())
}
}