Method xColumn

src/util/custom-table.cpp:264–279

This method extracts some column from the cursor's current row.

	// This method extracts some column from the cursor's current row.
	static int xColumn(sqlite3_vtab_cursor* _cursor, sqlite3_context* invocation, int column) {
		Cursor* cursor = Cursor::Upcast(_cursor);
		CustomTable* self = cursor->GetVTab()->parent;
		TempDataConverter temp_data_converter(self);
		Napi::Env env = self->env;
		Napi::HandleScope scope(env);

		Napi::Array row = cursor->row.Value();
		Napi::Value maybeColumnValue = SafeGetElement(env, row, (uint32_t)column);
		if (maybeColumnValue.IsEmpty()) {
			temp_data_converter.PropagateJSError(NULL);
		} else {
			Data::ResultValueFromJS(env, invocation, maybeColumnValue, &temp_data_converter);
		}
		return temp_data_converter.status;
	}

	// This method outputs the rowid of the cursor's current row.
	static int xRowid(sqlite3_vtab_cursor* cursor, sqlite_int64* output) {