Initial open-source release

packages/context/src/connections/local-query-executor.ts

@@ -0,0 +1,34 @@
+import { createPostgresQueryExecutor } from './postgres-query-executor.js';
+import type {
+  KloSqlQueryExecutionInput,
+  KloSqlQueryExecutionResult,
+  KloSqlQueryExecutorPort,
+} from './query-executor.js';
+import { createSqliteQueryExecutor } from './sqlite-query-executor.js';
+
+export interface DefaultLocalQueryExecutorOptions {
+  postgres?: KloSqlQueryExecutorPort;
+  sqlite?: KloSqlQueryExecutorPort;
+}
+
+function driverFor(input: KloSqlQueryExecutionInput): string {
+  return String(input.connection?.driver ?? '').toLowerCase();
+}
+
+export function createDefaultLocalQueryExecutor(options: DefaultLocalQueryExecutorOptions = {}): KloSqlQueryExecutorPort {
+  const postgres = options.postgres ?? createPostgresQueryExecutor();
+  const sqlite = options.sqlite ?? createSqliteQueryExecutor();
+
+  return {
+    async execute(input: KloSqlQueryExecutionInput): Promise<KloSqlQueryExecutionResult> {
+      const driver = driverFor(input);
+      if (driver === 'postgres' || driver === 'postgresql') {
+        return postgres.execute(input);
+      }
+      if (driver === 'sqlite' || driver === 'sqlite3') {
+        return sqlite.execute(input);
+      }
+      throw new Error(`No local query executor is configured for driver "${input.connection?.driver ?? 'unknown'}".`);
+    },
+  };
+}