Initial commit

node_modules/knex/lib/dialects/sqlite3/execution/sqlite-transaction.js

@@ -0,0 +1,25 @@
+const Transaction = require('../../../execution/transaction');
+
+class Transaction_Sqlite extends Transaction {
+  begin(conn) {
+    // SQLite doesn't really support isolation levels, it is serializable by
+    // default and so we override it to ignore isolation level.
+    // There is a `PRAGMA read_uncommitted = true;`, but that's probably not
+    // what the user wants
+    if (this.isolationLevel) {
+      this.client.logger.warn(
+        'sqlite3 only supports serializable transactions, ignoring the isolation level param'
+      );
+    }
+    // SQLite infers read vs write transactions from the statement operation
+    // https://www.sqlite.org/lang_transaction.html#read_transactions_versus_write_transactions
+    if (this.readOnly) {
+      this.client.logger.warn(
+        'sqlite3 implicitly handles read vs write transactions'
+      );
+    }
+    return this.query(conn, 'BEGIN;');
+  }
+}
+
+module.exports = Transaction_Sqlite;