select(): Build a `yaml_rust::yaml::Hash` for each row

Instead of my earlier `std::collections::HashMap`, build the type we
want to return directly in the row closure.

Required copying some data like the column names, but I don't see a way
around that. I suppose we could make `yaml_rust::Yaml`s from the column
headers in the row closure too instead of copying an existing column
header that we otherwise never use.

This nearly passes the test I have for this function, but it includes
the `id` column in the `Yaml` hash. The primary key column will need to
be removed.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/yaml/sql.rs b/src/yaml/sql.rs
index 49d83f7..ef72aae 100644
--- a/src/yaml/sql.rs
+++ b/src/yaml/sql.rs
@@ -16,6 +16,12 @@ pub(crate) struct Yaml<'a>(pub Cow<'a, yaml::Yaml>);
 
 // impl From<
 
+impl<'a> Yaml<'a> {
+    pub fn into_inner(self) -> yaml::Yaml {
+        self.0.into_owned()
+    }
+}
+
 impl<'a> rusqlite::ToSql for Yaml<'a> {
     fn to_sql(&self) -> rusqlite::Result<rusqlite::types::ToSqlOutput<'_>> {
         use rusqlite::types::ToSqlOutput;