Short Version
How does the shell get the properties of a file?
Long Version
The Windows Shell exposes a rich system of properties about items (e.g. files and folders) in the shell namespace.
For example:
System.Title: A Quick Guide for SQL Server Native Client OLE DB to ODBC Conversion
System.Author: George Yan (KW)
System.Document.LastAuthor: rohanl
System.Comment: To learn more about this speaker, find other TEDTalks, and subscribe to this Podcast series, visit www.TED.com Feedback: tedtalks#ted.com
System.ItemParticipants: George Yan (KW)
System.Company: Contoso
System.Language: English (United States)
System.Document.DateCreated: 6/10/2014 5∶16∶30 ᴘᴍ
System.Image.HorizontalSize: 1845 pixels
System.Image.VerticalSize: 4695 pixels
System.Image.HorizontalResolution: 71 dpi
System.Image.VerticalResolution: 71 dpi
In order for the shell to read these properties, it obviously has to use a lot of sources:
Windows Media Foundation IMFMetadata works great for images and movies
Windows Imaging Component (WIC) probably has a lot of APIs for reading metadata
I'm not sure if IFilter can retrieve Title, Author, Subject, Comments etc from Office documents
Either way, it has to read the file contents stream and do something with the contents of the file in order to get all these fancy shell properties. In other words:
IStream \
+ |--> [magic] --> IPropertyStore
.ext /
Can use it with my own stream?
I have items that are not in the shell namespace; they are in a data store. I do expose them to the shell through IDataObject as CF_FILEDESCRIPTOR with an IStream when its time to perform copy-paste or drag-drop. But outside of that they are just streamable blobs in a data store.
I'd like to be able to leverage all the existing work done by the very talented and hard-working1 shell team to read metadata from a "file", which in the end only exists as an IStream.
Is there perhaps a binding context option that lets me get a property store based on an IDataObject rather than a IShellItem2?
So rather than:
IPropertyStore ps = shellItem2.GetPropertyStore();
is there a:
IPropertyStore ps = GetShellPropertiesFromFileStream(stream);
?
How does the shell get all the properties of a file?
Bonus Chatter - IPropertyStoreFactory
This interface is typically obtained through IShellFolder::BindToObject or IShellItem::BindToHandler. It is useful for data source implementers who want to avoid the additional overhead of creating a property store through IShellItem2::GetPropertyStore. However, IShellItem2::GetPropertyStore is the recommended method to obtain a property store unless you are implementing a data source through a Shell folder extension.
Tried
IPropertyStore ps = CoCreateInstance(CLSID_PropertyStore);
IInitializeWithStream iws = ps.QueryInterface(IID_IInitializeWithStream);
But CLSID_PropertyStore does not support IInitializeWithStream.
Bonus Reading
MSDN: Initializing Property Handlers
Property handlers are a crucial part of the property system. They are invoked in-process by the indexer to read and index property values, and are also invoked by Windows Explorer in-process to read and write property values directly in the files.
MSDN: Registering and Distributing Property Handlers (spellunking the registry for fun and reading contracts from the other side)
(Have some experience in Property Store handlers) How I see a solution:
Get PropertyStore handler CLSID for your file extension. You should use 2 regkeys key:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\PropertySystem\PropertyHandlers\.yourext
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\PropertySystem\SystemPropertyHandlers
Create two objects with CoCreateInstance
If you have 2 object you can combine them into single object with PSCreateMultiplexPropertyStore
Query for IInitializeWithStream (also you can try to query IPersistStream).
If the PropertyStore object supports IInitializeWithStream/IPersistStream: you are lucky - just init your object and query the properties you need. If does not - you still have (dirty) variant to create temporary file and then use IPersistFile.
Related
I want to replicate the functionality of the IBM i Access Client Solutions "Printer Output" tool that is used to retrieve PDF's of spooled files from our IBM Db2 environment. Instead of a user interface, I want to replicate the functionality as an API.
I want to construct an API which takes inputs such as the filter parameters pictured below:
The output of the API would be PDF(s) of the printer output spooled files that match the parameters specified.
I figure that if I am able to access the i Access Printer Output tool, then I should be able to use my credentials to access the spool files using an API or something like that.
Where would I start in constructing something like this?
Also, are there any IBM guides that contain relevant information? I have looked but been unsuccessful. The Programmer's Toolkit is, also, not available with my version of i Access.
Also, I don't have developer roles, so if this is possible, it would need to be something that I can do with little authority within the IBM i servers and the Access client.
First off, IBM ACS is Java based. Thus everything it does can be found in the IBM Toolbox for Java, aka JTOpen aka JT400.
http://jt400.sourceforge.net/
Documentation https://www.ibm.com/docs/en/i/7.4?topic=java-toolbox
You're going to want to look at the reading a transformed spool file example
The transformation actually happens on the IBM i side, by specifying the appropriate workstation customization object, QCTXPDF in this case rather than the examples original QWPTIFFG4
// The following examples demonstrate how to set up a PrintParameterList to
// obtain different transformations when reading spooled file data. In the code
// segments that follow, assume a spooled file already exists on a server, and
// the createSpooledFile() method creates an instance of the SpooledFile class
// representing the spooled file.
// Create a spooled file
SpooledFile splF = createSpooledFile();
// Set up print parameter list
PrintParameterList printParms = new PrintParameterList();
printParms.setParameter(PrintObject.ATTR_WORKSTATION_CUST_OBJECT, "/QSYS.LIB/QCTXPDF.WSCST");
printParms.setParameter(PrintObject.ATTR_MFGTYPE, "*WSCST");
// Create a transformed input stream from the spooled file
PrintObjectTransformedInputStream is = splF.getTransformedInputStream(printParms);
Is there any way to execute a post project transfer event when transferring a project to a PLC?
I want to automatically change the value of a variable using fx the PVI interface every time I do a transfer.
I am not entirely sure what the usecase is for this. However the easiest way for some kind of post transfer script would be to utilize the Runtime Utility Center (RUC).
In the RUC, you can define instruction lists for a B&R PLC with an online connection. This includes instructions for transferring projects and setting values of process variables (PVs).
For transferring the project with RUC, you need to create a RUC package. This can be done under Settings/Export to Runtime Utility Center. You could also do this from the command line. More details in the help under Project management/Project installation/ Performing project installation/Export RUC Guid: cfe34190-f436-4c14-b06d-3a4ca39be7e7
This will create a zip, which you can then use in your RUC. For transfer command there is a wizard which activates when you double click on the command Transfer to target under Project installation The result is a line in the instruction list, which might look like this:
Transfer "C:\path\to\your\zip\project.zip", "InstallMode=Consistent InstallRestriction=AllowUpdatesWithoutDataLoss KeepPVValues=1 ExecuteInitExit=1"
After transferring you can write your PV. Under Process variable functions in the RUC you can find the command Write process variable. Also here there is a wizard and the result looks like this:
WriteVariable "taskname\VariableName", "USINT", "2"
I am using AS 4.4.6. There might be slight differences when using a other version.
I have a document management system which stores files in a MS Word format. In my application, I would like to be able to open that document in Word.
I would like Word to handle all of the file system access out of the content management system. What I need to do is the following:
1) Create a new document based off a template, and then provide information that can be parsed and placed into specific fields.
I see I can do this as follows:
Runtime.getRuntime().exec("C:/Program Files (x86)/Microsoft Office/Office15/winword.exe /ttemplate_name");
My assumption here is that the template is installed on the local drive. However I would like to provide some data so that fields could be prepopulated and I am not sure how to do that?
2) I would like to be able to run a macro to open the document directly from the content management system. I think I can run a macro as follows:
Runtime.getRuntime().exec("C:/Program Files (x86)/Microsoft Office/Office15/winword.exe /mmacro_name");
However, in this case, I would need to provide the document id from the content management system so that it can retrieve it and open it.
I am unsure what switch or parameter I can use to provide the additional data for word?
Thanks!
Word provides no command-line facility to pass arguments or data when opening or creating a document.
As long as macro code is available, the macro can read data that's stored somewhere, such as in an XML file. But the file path would need to be hard-coded or derivable from a known location (path).
You don't necessarily need to call a macro in a document (or template attached to the document). If the macro is named AutoNew or AutoOpen it will execute automatically when a document is created from the template or, respectively, when a document is opened.
I have specific problem. I need to extract domain names from active directory and combine them with employees numbers which are in Lotus Notes. I get the domain names with Get-QADUser (snapin from quest.com), that was no problem, but how to get the employees numbers and combine them? Thank you
Edit(18.5. 11:56): Now I'm using this script (posted by Christian) and I figured out how to get the name of LN database - right-click on DB in Lotus notes workspace, then application/properties.
# Create LN Object
$DomSession = New-Object -ComObject Lotus.NotesSession
# Initialize LN Object
# You'll be asking for LN password to your id
$DomSession.Initialize()
# Connect to Server, select db and display the name
$DomDatabase = $DomSession.GetDatabase("LN007","IT\HW.nsf")
Write-Host "Database open : " $DomDatabase.Title
# Open specific View (By Serial Number)
$DomView = $DomDatabase.GetView('Serial Number')
Write-Host "View read : " $DomView.Name
# Show number of documents
$DomNumOfDocs = $DomView.AllEntries.Count
Write-Host "Num of Docs : " $DomNumOfDocs
# Get First Document in the View
$DomDoc = $DomView.GetFirstDocument()
If you have access to the database and a Notes client, you can open the database in Notes Designer and review what views are available. You should then be able to find one or create one that contains the data you need.
If you don't have access to Lotus Notes, you're close enough with your powershell script that you can use the com API to get the information. The NotesDatabase object (i.e. $DomDatabase) has a Views property which will return NotesView objects. You can iterate over those and print out the names as a start. Likewise once you've found the view you want, you can access the columns within that view using the NotesView's Columns property.
You'll want to check out the COM api docs here for more help: http://blagoevgrad.court-bg.org/help/help85_designer.nsf/Main?OpenFrameSet (see the section LotusScript/COM/OLE Classes)
Depending on how comfortable you are with Powershell vs the com api, you could probably handle this a few ways, either by extracting all the documents in the view and getting the data out, or perhaps using the built in NotesView.GetDocumentByKey method that would act as a lookup in your script. With a view sorted on the key you're querying on (and set as your view's first column), you could call that method and get back the document with that key. Then use that NotesDocument object to retrieve any value within it (i.e. the employee name or number or whatever)
You can retrieve data from Lotus Notes using com object.
Suggested links:
http://davidmoravec.blogspot.it/2008/08/retrieve-data-from-lotus-notes-with.html
Lotus Notes comobject
Is the database you are opening called "names.nsf" by any chance? If so, that's the standard Domino Directory database and you should be using the "People" view, and the item name you are looking for should be "EmployeeID" -- unless the customer has customized the database with their own field names.
If it is a custom database you are working with, then in addition to using the Notes client and Domino Designer, get yourself a copy of NotesPeek. It's free. Download here
It gives you a tree view of the database. It shows you everything that is stored in the database -- but it only shows you what is stored, so computed fields that you can see in the Notes client but aren't accessible through the Notes classes won't confuse you. (The document properties dialog in the Notes client won't show you computed values either if you use it while you have a document selected in a view, but it will show them to you if you use while you have a document actually open.)
I'm working on automated builds and need to be able to list elements that were worked on under particular activities. I'm new to ClearCase so I apologise for naiivety ...
My downstream build process works fine and I now need to populate a 'pre-build' area by identifying the (checked-in) files associated with one or more activities, labels etc (in fact any combination the change/release manager wants) by listing the candidate files for a build and then copying them from the M: drive (Windows). We are using CC 7.1 with a back end on AIX and Win XP Pro desktops. We'll use ccperl to drive the find+copy process.
I have battled with 'find' to no avail - can someone lend a hand? All help gratefully received.
Cliff.
For "label" (I suppose "UCM Baselines" since you mention "activities", which exist only with UCM):
The easiest way would be to configure a config spec for a dynamic view:
element * MY_BASELINE
in order to quickly access the right files.
For activities, you could (if there is not too much files involved), list the exact versions of each activities you want:
cleartool descr -l activity:my_actity#\pvob
and parse the result to grep/awk only what you need.
You need only to do this within a dynamic view (any dynamic view): the activity will contain a list of extended pathnames, meaning you will be able to access and copy each version through that myFile##/main/myBranch/myVersion path.