elefant-tools 0.0.8

A library for doing things like pg_dump and pg_restore, with extra features, and probably more bugs.
Documentation 
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use crate::postgres_client_wrapper::QueryResult;

pub struct ViewResult {
    pub oid: i64,
    pub view_name: String,
    pub schema_name: String,
    pub definition: String,
    pub comment: Option<String>,
    pub is_materialized: bool,
    pub depends_on: Option<Vec<i64>>,
    pub type_oid: i64,
}

impl<'a> elefant_client::FromSqlRow<'a> for ViewResult {
    fn from_sql_row(
        row: &'a elefant_client::PostgresDataRow<'_, '_>,
    ) -> Result<Self, elefant_client::ElefantClientError> {
        Ok(Self {
            oid: row.get(0)?,
            view_name: row.get(1)?,
            schema_name: row.get(2)?,
            definition: row.get(3)?,
            comment: row.get(4)?,
            is_materialized: row.get(5)?,
            depends_on: row.get(6)?,
            type_oid: row.get(7)?,
        })
    }
}

//language=postgresql
pub(in crate::schema_reader) const QUERY: &str = r#"
select tab.oid::int8,
    tab.relname                   as view_name,
       ns.nspname                    as schema_name,
       pg_get_viewdef(tab.oid, true) as def,
       des.description,
         tab.relkind = 'm'             as is_materialized,
         (select array_agg(source_view.oid::int8)
        from pg_rewrite rew
                 join pg_depend dep on rew.oid = dep.objid
                 join pg_class source_view on dep.refobjid = source_view.oid and source_view.oid <> tab.oid
        where rew.ev_class = tab.oid) as depends_on,
    tab.reltype::int8
from pg_class tab
         join pg_namespace ns on tab.relnamespace = ns.oid
         left join pg_description des on des.objoid = tab.oid
         left join pg_depend dep on dep.objid = ns.oid
where tab.oid > 16384
  and tab.relkind in('v', 'm')
  and (dep.objid is null or dep.deptype <> 'e' )
  and has_table_privilege(tab.oid, 'SELECT')
order by schema_name, view_name;
"#;

impl QueryResult for ViewResult {
    fn query(_version: i32) -> &'static str {
        QUERY
    }
}