/// <summary>
/// Checks to see if the specified field is updatable.
/// </summary>
/// <param name="field">The field to inspect.</param>
/// <returns>True if updatable, false if otherwise.</returns>
private bool IsUserCounterUpdatable(IDeviceField field)
{
if (field == null)
{
return(false);
}
// The *Account,*Total files indicate they are writable, but older firmware will throw a MANAGEMENT_BAD_OBJECT_ID.
// These fields are NOT writable even though the capability may indicate otherwise.
return(field.Type.IsNumeric() &&
!(field.Name ?? String.Empty).EndsWith("Account", StringComparison.CurrentCultureIgnoreCase) &&
!(field.Name ?? String.Empty).EndsWith("Total", StringComparison.CurrentCultureIgnoreCase));
}
/// <summary>
/// Converts the raw device field into an external field object for consumption by the service.
/// </summary>
/// <param name="field">The raw device field to convert.</param>
/// <returns>The converted ICounter value if valid; otherwise returns null.</returns>
public static field ToField(this IDeviceField field)
{
if (field == null)
{
return(null);
}
return(new field()
{
name = field.Name,
type = field.GetExternalType(),
value = field.GetExternalValue()
});
}
/// <summary>
/// Check to see if any of the boolean <see cref="IDeviceField"/> values are true that match the specified name.
/// </summary>
/// <param name="fields">The fields to search.</param>
/// <param name="names">The names of the <see cref="IDeviceField" /> to check.</param>
/// <returns>True if any of the boolean values are true, false if otherwise, null if none of the specified names exist.</returns>
public static bool?Any(this IEnumerable <IDeviceField> fields, IEnumerable <string> names)
{
if (fields == null)
{
return(false);
}
IDeviceField <bool> result = Get <bool>(fields, (f) => names.Any(n => String.Equals(f.Name, n, StringComparison.CurrentCultureIgnoreCase))).FirstOrDefault();
if (result == null)
{
return(null);
}
return(result.Value);
}
/// <summary>
/// Add the specified field item to the list of field. Null field items are ignored.
/// </summary>
/// <param name="field">The field to add. If null, then the field is ignored.</param>
protected virtual void Add(IDeviceField field)
{
if (field == null)
{
return;
}
lock (_mutex) {
if (_fields == null)
{
_fields = new List <IDeviceField>();
}
_fields.Add(field);
}
}
/// <summary>
/// Retrieve the specified field value.
/// </summary>
/// <param name="fields">The field to search.</param>
/// <param name="filter">The custom filter to use to search.</param>
/// <param name="defaultValue">The default value to use if the specified tag is not found.</param>
/// <returns>The value of the specified counter. If not specified, then 0 is returned.</returns>
public static T GetValue <T>(this IEnumerable <IDeviceField> fields, Func <IDeviceField, bool> filter, T defaultValue = default(T))
{
IDeviceField <T> f = Get <T>(fields, filter).FirstOrDefault();
return(f != null ? f.Value : defaultValue);
}
/// <summary>
/// Retrieve the specified field value.
/// </summary>
/// <param name="fields">The field to search.</param>
/// <param name="name">The name of the <see cref="IDeviceField" /> to find.</param>
/// <param name="defaultValue">The default value to use if the specified tag is not found.</param>
/// <returns>The value of the specified counter. If not specified, then 0 is returned.</returns>
public static T GetValue <T>(this IEnumerable <IDeviceField> fields, string name, T defaultValue = default(T))
{
IDeviceField <T> f = Get <T>(fields, name);
return(f != null ? f.Value : defaultValue);
}
