Uploading files into folders inside cabinets programaticaly.

vsoman1984

Hi All,

I am trying to find a solution for uploading files into the folders inside cabinets programaticaly.Having referred the DFC documentation i found an example featuring IDfImportOperation functionality.The following is the Java code described there:

package com.emc.tutorial;
import com.documentum.com.DfClientX;
import com.documentum.com.IDfClientX;
import com.documentum.fc.client.IDfFolder;
import com.documentum.fc.client.IDfSession;
import com.documentum.fc.client.IDfSessionManager;
import com.documentum.fc.common.DfException;
import com.documentum.operations.IDfFile;
import com.documentum.operations.IDfImportNode;
import com.documentum.operations.IDfImportOperation;
public class TutorialImport
{
public TutorialImport()
{}
public String importExample(IDfSessionManager sessionManager,String repositoryName,String destinationDirectory,String sourceFilePath){IDfSession mySession = null;
try
{
mySession = sessionManager.getSession(repositoryName);
// Create a new client instance.
IDfClientX clientx = new DfClientX();
// Use the factory method to create an IDfImportOperation instance.
IDfImportOperation opi = clientx.getImportOperation();
// You must explicitly set the session for an import operation.
opi.setSession(mySession);
// Create an instance of the target folder.
IDfFolder folder = mySession.getFolderByPath(destinationDirectory);
// Create a file instance for the local file.
IDfFile file = clientx.getFile(sourceFilePath);
if (!file.exists())
return ("File does not exist.");
// Set the destination folder.
opi.setDestinationFolderId(folder.getObjectId());
// Create the import node, adding the file to the import operation.
IDfImportNode node = (IDfImportNode) opi.add(file);
if (node == null)
return ("Node is null.");
// Execute the import operation and return the results.
if (opi.execute())
{
String resultString =
("Item" + opi.getNewObjects().toString() +
" imported successfully.");
return resultString;
}
else
{
return ("Error during import operation.");
}
// Handle any exceptions.
}
catch (Exception ex)
{
ex.printStackTrace();
return "Exception has been thrown: " + ex;
}
// Always, always, release the session in the "finally" clause.
finally
{
sessionManager.release(mySession);
}
}}

Two of my queries are:

1) What should be passed as a parameter for "destinationDirectory" ? Should it be the r_object_id of the destination folder of choice?

2) What should be passed as a parameter for "sourceFilePath" ? Is it the absolute path?

If i want to pass a bytearray instead of sourceFilePath. How can i achieve it?

I modified the above code to pass a ByteArrayInputStream instead of the sourceFilePath.

IDfFolder folder = mySession.getFolderByPath(destinationDirectory);// Create a file instance for the local file.String filea = clientx.ByteArrayInputStreamToString(bytearr);IDfFile file = clientx.getFile(filea);

Is this a correct approach to direct content to the folder if it is available only in the form of bytearray.In my case the file comes from a webservice in the form of Byte Array

I hope i will get your guidance as always.

Thank You

Regards

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Accepted answers

ukdavo

Try document.link() before you save(). You can pass the object id of the target folder or it's path as a string.

Regards

All comments

ukdavo

> 1) What should be passed as a parameter for "destinationDirectory" ? Should it be the r_object_id of the destination folder of choice?

Yes. I think it can also be the folder path as a String (check the docs).

> 2) What should be passed as a parameter for "sourceFilePath" ? Is it the absolute path? If i want to pass a bytearray instead of sourceFilePath. How can i achieve it?

Yes. IDfImportOperation only works with IDfFile instances. The only implementation of IDfFile that is OOTB is available through the DfClientX factory. Perhaps you could just write the byte array out to a temp file.

Alternatively you could create a persistent object via IDfSession (i.e. not bother using IDfImportOperation) then cast it as an IDfSysObject and set the content via IDfSysObject.setContent(). You would also have to call a few other IDfSysObject methods - link(), setObjectName(), etc. I'm pretty sure that this is covered in the DFC Dev guides and the DFC Javadocs.

You can get info on DFC operations at https://community.emc.com/docs/DOC-1263.

Regards

vsoman1984

Thank You ukdavo for your reply.

I have successfully carried out file import progamaticaly through your help.The naming of the destination cabinets was the issue.

Now concentrating on my main issue.How to pass bytearray as file? Since i am obtaining my bytearray from Web services.Creation of temp file will result in creation of a file on my hard disk which i want to avoid.

Could you please guide me a bit further with your "create a persistent object via IDfSession" suggestion using IDfSysObject.setContent() with a code snippet. I was not able find any help on that.

IDfFolder folder = mySession.getFolderByPath(destinationDirectory);
   System.out.println("This is inside importExample 7.Folder>>> " + folder);
   // Create a file instance for the local file.
   IDfFile file = clientx.getFile(sourceFilePath);
   
   
   System.out.println("This is inside importExample 8 got file b4 if");
   if (!file.exists()){ 
   System.out.println("This is inside if. Seen when file is absent");
   return ("File does not exist.");
   }

In the line IDfFile file = clientx.getFile(sourceFilePath); the clientx has help suggestion of ByteArrayInputStreamtoString. Can that be of any help to me?

Looking forward for your guidance.

Thank You.

ukdavo

You have 2 choices if you want to import content via the DFC API:

1. Create a persistent object using IDfSession.newObject() as mentioned in my last post. Once you have a persistent object you can set the content from a byte array stream or a java.io.File. There should be enough documentation on this in the DFC Dev guide and the Javadocs. This is the low level approach to importing content. This requires more code but you get more control (e.g. the ability to use a byte array).

This is an old article but it demonstrates creating a document and setting the content via setFile() - you would probably want to change this call to setContent().

http://www.bluefishgroup.com/library/2006/getting-started-with-dfc-and-dql/

2. Use DfImportOperation. It's a convenience class so it allows you to develop import functionality with minimal code. The downside to this convenience is that there's little flexibility. If you choose to use this then you cannot pass in a byte array.

Regards

vsoman1984

Hi ukdavo,

Thank you once again:) your suggestion numbered 1 was spot on.And i sense that i am really close to my final aim of placing a bytearray as a file inside my repository.

Just the last piece of the puzzle for me is how to place the newly created document from bytearray inside a folder inside the documentum cabinet.

I added the following lines from the link you privided.

document = (IDfDocument) mySession.newObject("dm_document");document.setObjectName(FILE_NAME);document.setContentType("crtext");document.setContent(outputStream);

The last line is document.save();

Though this guarantees saving of the document,is there a way to specify the exact location (folder inside cabinet)i.e. destination location?

document.(CNTRL+SPace) gave me a host of suggestion but could not find mode to select destination

I will be through if i clear this hurdle.

Awaiting your reply.

Thank You

Regards

ukdavo

Try document.link() before you save(). You can pass the object id of the target folder or it's path as a string.

Regards

vsoman1984

Thank You ukdavo.

I linked the content to the folder and as a result i was able to obtain my document inside the folder named "Subdir" inside the "Temp" Cabinet.

Once again thanks a zillion to guide me and help me find my solution.:)

Regards