chore: Align drivers methods signatures (add overrides to public/protected driver methods)

packages/cubejs-base-driver/src/BaseDriver.ts

@@ -470,20 +470,20 @@ export abstract class BaseDriver implements DriverInterface {
     }
   }
 
-  public getSchemas() {
+  public getSchemas(): Promise<QuerySchemasResult[]> {
     const query = this.getSchemasQuery();
     return this.query<QuerySchemasResult>(query);
   }
 
-  public getTablesForSpecificSchemas(schemas: QuerySchemasResult[]) {
+  public getTablesForSpecificSchemas(schemas: QuerySchemasResult[]): Promise<QueryTablesResult[]> {
     const schemasPlaceholders = schemas.map((_, idx) => this.param(idx)).join(', ');
     const schemaNames = schemas.map(s => s.schema_name);
 
     const query = this.getTablesForSpecificSchemasQuery(schemasPlaceholders);
     return this.query<QueryTablesResult>(query, schemaNames);
   }
 
-  public async getColumnsForSpecificTables(tables: QueryTablesResult[]) {
+  public async getColumnsForSpecificTables(tables: QueryTablesResult[]): Promise<QueryColumnsResult[]> {
     const groupedBySchema: Record<string, string[]> = {};
     tables.forEach((t) => {
       if (!groupedBySchema[t.schema_name]) {

packages/cubejs-bigquery-driver/src/BigQueryDriver.ts

@@ -222,14 +222,14 @@ export class BigQueryDriver extends BaseDriver implements DriverInterface {
     return dataSetsColumns.reduce((prev, current) => Object.assign(prev, current), {});
   }
 
-  public async getSchemas(): Promise<QuerySchemasResult[]> {
+  public override async getSchemas(): Promise<QuerySchemasResult[]> {
     const dataSets = await this.bigquery.getDatasets();
     return dataSets[0].filter((dataSet) => dataSet.id).map((dataSet) => ({
       schema_name: dataSet.id!,
     }));
   }
 
-  public async getTablesForSpecificSchemas(schemas: QuerySchemasResult[]): Promise<QueryTablesResult[]> {
+  public override async getTablesForSpecificSchemas(schemas: QuerySchemasResult[]): Promise<QueryTablesResult[]> {
     try {
       const allTablePromises = schemas.map(async schema => {
         const tables = await this.getTablesQuery(schema.schema_name);
@@ -247,7 +247,7 @@ export class BigQueryDriver extends BaseDriver implements DriverInterface {
     }
   }
 
-  public async getColumnsForSpecificTables(tables: QueryTablesResult[]): Promise<QueryColumnsResult[]> {
+  public override async getColumnsForSpecificTables(tables: QueryTablesResult[]): Promise<QueryColumnsResult[]> {
     try {
       const allColumnPromises = tables.map(async table => {
         const tableName = `${table.schema_name}.${table.table_name}`;

packages/cubejs-redshift-driver/src/RedshiftDriver.ts

@@ -103,7 +103,7 @@ export class RedshiftDriver extends PostgresDriver<RedshiftDriverConfiguration>
   /**
    * @override
    */
-  protected informationSchemaQuery() {
+  protected override informationSchemaQuery() {
     return `
       SELECT columns.column_name as ${this.quoteIdentifier('column_name')},
              columns.table_name as ${this.quoteIdentifier('table_name')},
@@ -119,7 +119,7 @@ export class RedshiftDriver extends PostgresDriver<RedshiftDriverConfiguration>
    * so it needs to be queried separately.
    * @override
    */
-  public async tablesSchema(): Promise<DatabaseStructure> {
+  public override async tablesSchema(): Promise<DatabaseStructure> {
     const query = this.informationSchemaQuery();
     const tablesSchema = await this.query(query, []).then(data => data.reduce<DatabaseStructure>(this.informationColumnsSchemaReducer, {}));
 
@@ -155,7 +155,7 @@ export class RedshiftDriver extends PostgresDriver<RedshiftDriverConfiguration>
   /**
    * @override
    */
-  protected getSchemasQuery() {
+  protected override getSchemasQuery() {
     return `
       SELECT table_schema as ${this.quoteIdentifier('schema_name')}
       FROM information_schema.tables
@@ -170,15 +170,15 @@ export class RedshiftDriver extends PostgresDriver<RedshiftDriverConfiguration>
    * It returns regular schemas (queryable from information_schema) and external ones.
    * @override
    */
-  public async getSchemas(): Promise<QuerySchemasResult[]> {
+  public override async getSchemas(): Promise<QuerySchemasResult[]> {
     const schemas = await this.query<QuerySchemasResult>(`SHOW SCHEMAS FROM DATABASE ${this.dbName}`, []);
 
     return schemas
       .filter(s => !IGNORED_SCHEMAS.includes(s.schema_name))
       .map(s => ({ schema_name: s.schema_name }));
   }
 
-  public async getTablesForSpecificSchemas(schemas: QuerySchemasResult[]): Promise<QueryTablesResult[]> {
+  public override async getTablesForSpecificSchemas(schemas: QuerySchemasResult[]): Promise<QueryTablesResult[]> {
     const tables = await super.getTablesForSpecificSchemas(schemas);
 
     // We might request the external schemas and tables, their descriptions won't be returned
@@ -195,7 +195,7 @@ export class RedshiftDriver extends PostgresDriver<RedshiftDriverConfiguration>
     return tables;
   }
 
-  public async getColumnsForSpecificTables(tables: QueryTablesResult[]): Promise<QueryColumnsResult[]> {
+  public override async getColumnsForSpecificTables(tables: QueryTablesResult[]): Promise<QueryColumnsResult[]> {
     const columns = await super.getColumnsForSpecificTables(tables);
 
     // We might request the external tables, their descriptions won't be returned
@@ -245,7 +245,7 @@ export class RedshiftDriver extends PostgresDriver<RedshiftDriverConfiguration>
    * And querying even system tables is billed.
    * @override
    */
-  public async testConnection() {
+  public override async testConnection() {
     const conn = await this.pool.connect();
     conn.release();
   }