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use std::collections::HashMap;
use std::sync::Arc;
use super::*;
#[derive(Clone)]
pub struct SchemaCatalog {
id: SchemaId,
name: String,
table_idxs: HashMap<String, TableId>,
tables: HashMap<TableId, Arc<TableCatalog>>,
next_table_id: TableId,
}
impl SchemaCatalog {
pub fn new(id: SchemaId, name: String) -> SchemaCatalog {
SchemaCatalog {
id,
name,
table_idxs: HashMap::new(),
tables: HashMap::new(),
next_table_id: 0,
}
}
pub(in crate::catalog) fn add_table(
&mut self,
name: String,
columns: Vec<ColumnCatalog>,
is_materialized_view: bool,
ordered_pk_ids: Vec<ColumnId>,
) -> Result<TableId, CatalogError> {
if self.table_idxs.contains_key(&name) {
return Err(CatalogError::Duplicated("table", name));
}
let table_id = self.next_table_id;
self.next_table_id += 1;
let table_catalog = Arc::new(TableCatalog::new(
table_id,
name.clone(),
columns,
is_materialized_view,
ordered_pk_ids,
));
self.table_idxs.insert(name, table_id);
self.tables.insert(table_id, table_catalog);
Ok(table_id)
}
pub(in crate::catalog) fn delete_table(&mut self, id: TableId) {
let catalog = self.tables.remove(&id).unwrap();
self.table_idxs.remove(&catalog.name()).unwrap();
}
pub fn all_tables(&self) -> HashMap<TableId, Arc<TableCatalog>> {
self.tables.clone()
}
pub fn get_table_id_by_name(&self, name: &str) -> Option<TableId> {
self.table_idxs.get(name).cloned()
}
pub fn get_table_by_id(&self, table_id: TableId) -> Option<Arc<TableCatalog>> {
self.tables.get(&table_id).cloned()
}
pub fn get_table_by_name(&self, name: &str) -> Option<Arc<TableCatalog>> {
self.table_idxs
.get(name)
.and_then(|id| self.tables.get(id))
.cloned()
}
pub fn name(&self) -> String {
self.name.clone()
}
pub fn id(&self) -> SchemaId {
self.id
}
}