What could be the reason for rowsAffected not returning an integer value?

Currently, I am working on executing the SQLite statement in an iOS application. To verify the count of affected records, I have implemented success and error callback methods.

Upon receiving the results, although the variables are correctly defined, I encounter an issue when trying to perform an "if" check on the rowsAffected variable as it is being considered as an object instead of a value.

This code snippet belongs to an Angular service where I handle the SQL query execution:


$DBService.ExecuteQuery(script, params,
    function (insertId, rowsAffected, rows) {
        window.logger.logIt("rowsAffected: " + rowsAffected.toString());

        if (rowsAffected !== 1) {
            deferred.reject("Failed to update record. Query did not return 1 record affected.");
        } else {
            deferred.resolve();
        }
    },
    function (error) {
        deferred.reject("Failed to update record. " + error.message);
    }
);

While debugging, I noticed that hovering over the rowsAffected variable displays insertId, rowsAffected = 1, and rows as if they were properties of a class. This behavior raises confusion as rowsAffected should just be a single variable. Additionally, writing to the console log with window.logger.logIt() results in [object object], further indicating that it may be treated as a class rather than a simple variable within the class.

If anyone can shed some light on this situation, I would greatly appreciate it.

Answer №1

According to the official documentation:

When using the executeSql() method, the callback function will receive a SQLResultSet object.

This means that the callback argument is an object containing three specific properties. It's important to rely on the information provided by DevTools.

To implement this correctly:

$DBService.ExecuteQuery(script, params,
    function (resultSetObj) {
        ...
        if (resultSetObj.rowsAffected !== 1) {
            ...

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