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Developing Windows Clients |
The FileInfo interface provides additional information about a SAS Fileref. This interface cannot make any changes to any attributes.
Attributes
StatusMessage Property
StatusValue Property
PhysicalName Property
RecordFormat Property
DataLength Property
Filesize Property
ModifiedTime Property
AccessMethod Property
Methods
GetInfoProperties Method
GetStandardProperties Method
Enumerations
IFileInfoStatus EnumerationDescription
Returns a textual analog of the StatusValue attribute; indicates the status of the phsycial file this fileref refers to.
Type: String
Description
Example
Usage
One of the Status enumeration values; indicates the status of the physical file that this fileref refers to.
Type: Long
Description
Example
Usage
Name as known to the OS host.
Type: String
Description
The fileref name is a logical name that refers to this physical name. The format of the physical name is dependent on the operating system and the access method. One of the reasons for having a fileref refer to they physical name is that the fileref can be used the same, without regard to the underlying physical medium.
Example
Usage
Record Format.
Type: String
Description
Example
Usage
Available data length.
Type: Long
Description
Example
Usage
Size of the file in bytes.
Type: Double
Description
Example
Usage
The last time the file was modified.
Type: Date
Description
The last time that the file was modified. This is generally in some form of local time.
This local time may be based on the timezone of the SAS IOM server, or it may be the local time of the computer that stored the timestamp. No guarantee is made about whose local time is represented. Also, time zone is not just set by geography, but also by Daylight Savings Time changes. Thus, the same computer can read and write timestamps in different time zones in different parts of the year.
For some files on some hosts, it may be possible to retrieve a date, but not time-of-day. In some other cases, even the date may be unknown. For unknown dates, the SAS System base date of January 1 1960 will generally be returned.
Given the number of filesystems with which SAS Software interacts, it not possible to guarantee the accuracy of this datetime.
Example
Usage
Also known as the device-type on a FILENAME statement.
Type: String
Description
The access method determines what the underlying physical medium is, and how to interpret the physical name. Various hosts support different access methods.
Example
Usage
Returns host/engine specific properties of the fileref.
Description
This method is most suited for displaying the information to the user in a properties type of dialog. Use of this information in logic is not advised since this information will be different between hosts and may change between releases of SAS.
Usage
Parameters
| Name | Direction | Type | Description |
|---|---|---|---|
| propertyNames | out | String(index) | A returned array of property names that corresponds to what is returned in the propertyValues. |
| propertyValues | out | String(index) | A set of values for each property name returned in propertyNames. |
Example
Dim properties As PropertyForm
Dim obFileref As SAS.Fileref
Dim obFileInfo As SAS.IFileInfo
Dim standardPropertyNames() As String
Dim standardPropertyValues() As String
Dim infoPropertyNames() As String
Dim infoPropertyValues() As String
Dim i As Integer
Dim item As ListItem
Set obFileInfo = obSAS.FileService.UseFileref(Form1.ListView1.SelectedItem.Text)
Set obFileref = obFileInfo
PropertyForm.Caption = obFileref.FilerefName
obFileInfo.GetStandardProperties standardPropertyNames, standardPropertyValues
obFileInfo.GetInfoProperties infoPropertyNames, infoPropertyValues
For i = 1 To UBound(standardPropertyNames)
Set item = PropertyForm.propertyList(0).ListItems.Add()
item.Text = standardPropertyNames(i)
item.SubItems(1) = standardPropertyValues(i)
Next
For i = 1 To UBound(infoPropertyNames)
Set item = PropertyForm.propertyList(1).ListItems.Add()
item.Text = infoPropertyNames(i)
item.SubItems(1) = infoPropertyValues(i)
Next i
PropertyForm.Show
See Also
Returns properties that are common to all hosts (called General Properties in the SAS Explorer.)
Description
These properties are also available as individual attributes on this interface. Programmers should choose to call GetStandardProperties when displaying all properties to the user; and call individual properties when using that property. This minimizes the number of out-of-process calls.
Usage
A returned array of property names that corresponds to what is returned in the propertyValues.
Parameters
| Name | Direction | Type | Description |
|---|---|---|---|
| propertyNames | out | String(index) | |
| propertyValues | out | String(index) | Returns a set of values for each property name returned in propertyNames. |
Example
See Also
Possible values for the status of the physical file that this fileref refers to.
Description
Usage
| Member | Description |
|---|---|
| IFileInfoStatusFileExists | Everything is OK. |
| IFileInfoStatusDeviceOffline | The device is offline. |
| IFileInfoStatusDeviceNotAttached | The hardware is not attached. |
| IFileInfoStatusBadFile | The name exists but is not a physical file. |
| IFileInfoStatusNoDetect | The status of the physical file can only be determined after being opened. |
| IFileInfoStatusNotDisk | The device is not a disk. |
| IFileInfoStatusNoFile | The physical file does not exist. |
| IFileInfoStatusUnknownWarning | Check the StatusMessage attribute. |
| IFileInfoStatusUnknownError | Check the StatusMessage attribute. |
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Developing Windows Clients |