diesel/pg/query_builder/
limit_offset.rs

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1use crate::pg::Pg;
2use crate::query_builder::limit_offset_clause::{BoxedLimitOffsetClause, LimitOffsetClause};
3use crate::query_builder::{AstPass, IntoBoxedClause, QueryFragment};
4use crate::result::QueryResult;
5
6impl<'a, L, O> IntoBoxedClause<'a, Pg> for LimitOffsetClause<L, O>
7where
8    L: QueryFragment<Pg> + Send + 'a,
9    O: QueryFragment<Pg> + Send + 'a,
10{
11    type BoxedClause = BoxedLimitOffsetClause<'a, Pg>;
12
13    fn into_boxed(self) -> Self::BoxedClause {
14        BoxedLimitOffsetClause {
15            limit: Some(Box::new(self.limit_clause)),
16            offset: Some(Box::new(self.offset_clause)),
17        }
18    }
19}
20
21impl QueryFragment<Pg> for BoxedLimitOffsetClause<'_, Pg> {
22    fn walk_ast<'b>(&'b self, mut out: AstPass<'_, 'b, Pg>) -> QueryResult<()> {
23        if let Some(ref limit) = self.limit {
24            limit.walk_ast(out.reborrow())?;
25        }
26        if let Some(ref offset) = self.offset {
27            offset.walk_ast(out.reborrow())?;
28        }
29        Ok(())
30    }
31}
32
33impl<L, O> QueryFragment<Pg> for LimitOffsetClause<L, O>
34where
35    L: QueryFragment<Pg>,
36    O: QueryFragment<Pg>,
37{
38    fn walk_ast<'b>(&'b self, mut out: AstPass<'_, 'b, Pg>) -> QueryResult<()> {
39        self.limit_clause.walk_ast(out.reborrow())?;
40        self.offset_clause.walk_ast(out.reborrow())?;
41        Ok(())
42    }
43}
diesel/pg/query_builder/limit_offset.rs

diesel/pg/query_builder/
limit_offset.rs
