In TBO implementation manipulating the content of object

Hello

I am implementing a TBO in which i want to manipulate the content of object right now i am doing through following sample

IDfSession session = getSession();

IDfSysObject sysObject = (IDfSysObject) session.getObject(new DfId(getObjectId().getId()));

String line = "Mayur Mitkari";

byte b[] = line.getBytes();

ByteArrayOutputStream buf = new ByteArrayOutputStream();

buf.write(b, 0, b.length);

sysObject.setContent(buf);

String id = sysObject.getString("r_object_id");

IDfSysObject object = (IDfSysObject) session.getObject(new DfId(id));

object.setObjectName(getTitle()+ "1");

object.save();

is there any do method through which is preferred like doFetch, doCheckout

Regards

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Accepted answers

PanfilovAB

Since D6 doCanBypassDfcForOutboundContent method depricates isTransferableFromAcs, i.e. overriding it and returning false forces execution of getFileEx2/getContentEx3 TBO methods. Overriding doCanBypassDfcForInboundContent method forces execution of setFileEx/appendFileEx/insertFileEx/addRenditionEx3 methods

All comments

PanfilovAB

What is the initial requirement you trying to implement?

msroth

You can find a list of all of the DFC methods that are override-able in TBOs in the EMC Documentum Foundation Classes Development Guide (chapter 7), or here: TBOs – Part 6 | dm_misc: Miscellaneous Documentum Information.

Mayur_shivs

Does there any specified method by DFC documentation to override in TBO for editing the content of object

Regards

msroth

Editing a document is a combination of two actions: checkout (which locks the object in the repo), and export (which brings the content to the user's workstation). You can write a TBO to modify how the checkout action works to include an explicit export of the content and any modification you want to do to it programmatically (e.g., transformation, etc.). You will likely have to modify the checkin action with a TBO to make it aware of the modified content. I have not found an export method that can be safely overridden with a TBO, though I have seen implementations that override getFileEx2() method which the export action invokes. This is not a recommended or supported implementation, but it is possible.

Haroon_A

get/set content uses getfile/setfile, and to override it in your TBO, you need to implement the following methods, depending on you do getfile or setfile

protected boolean doCanBypassDfcForOutboundContent

protected boolean doCanBypassDfcForInboundContent

msroth

Ahmad,

I am not familar with the two methods you cited. Are they new to D7? Can you point me to some more info on them? I'm very curious. Thanks.

Haroon_A

I don't think it's new to D7, for I have used it with 6.5 DFC.

I am not sure if it's cited in WDK/DFC dev guide, I don't have the docs to confirm, but you can check it out.

Here's another thread for reference: https://community.emc.com/message/700919#700919

PanfilovAB

msroth

Thanks @Ahmad and @PanfilovAB, I have been working with TBOs for sometime and am not familiar with those methods -- but will be experimenting with them for sure!. Thanks for the pointers; they may simplify some work I have done in the past.

Harish_Elango

@msroth, You have mentioned , "Editing a document is a combination of two actions". When user tries to checkout, Is that possible to make only first action (lock) happens and not the export. I need to do this only for set of objects which are in archival category.

DCTM_Guru

@Harish_Elango - the concept of TBO is that you can override the native behavior of methods that available to be overridden. So to answer your question, you can override doCheckOut and instead of calling super.doCheckOut, just implement the locking action:

IDfSysObjeck.lock();

Harish_Elango

@DCTM_Guru , I am getting nullpointer exception, not sure what should be returned, please guide. PFB, code and error.

protected IDfId doCheckout(String arg0, String arg1, String arg2, Object[] arg3) {

IDfId docID = null;

if(isArchivedDocument(getString("<attribute>")))

{

System.out.println(date+" Document is archived document : "+getObjectId());

IDfSession sess = getSession();

IDfSysObject sysObj = (IDfSysObject)sess.getObject(getObjectId());

sysObj.lock();

System.out.println(date+" sysObj lock : "+getObjectId());

//docID = super.doCheckout(arg0, arg1, arg2, arg3);

}

return docID;

}

17:14:49,441 ERROR [[ACTIVE] ExecuteThread: '11' for queue: 'weblogic.kernel.Default (self-tuning)'] com.documentum.web.common.Trace - Operation failed

java.lang.NullPointerException

at com.documentum.operations.nodeactions.DfObtainLock.lockObject(DfObtainLock.java:284)

at com.documentum.operations.nodeactions.DfObtainLock.obtainLock(DfObtainLock.java:212)

at com.documentum.operations.nodeactions.DfObtainLock.execute(DfObtainLock.java:40)

at com.documentum.operations.steps.impl.OperationStep.executeStep(OperationStep.java:163)

at com.documentum.operations.steps.impl.OperationStep.execute(OperationStep.java:41)

at com.documentum.operations.impl.OperationExecutionEngine.execute(OperationExecutionEngine.java:51)

at com.documentum.operations.DfOperation.execute(DfOperation.java:400)

at com.documentum.web.contentxfer.DFCOperationSupport.execute(DFCOperationSupport.java:61)

at com.documentum.web.contentxfer.ContentTransferService.execute(ContentTransferService.java:386)

at com.documentum.web.contentxfer.JobAdapter.execute(JobAdapter.java:108)

at com.documentum.job.async.AsyncJobManager$AsyncTimerJob.executeJob(AsyncJobManager.java:236)

at com.documentum.job.async.AsyncJobManager$AsyncTimerJob.run(AsyncJobManager.java:215)

at java.util.TimerThread.mainLoop(Timer.java:555)

at java.util.TimerThread.run(Timer.java:505)

DCTM_Guru

Is this code running in a job? TBO are not designed to run as job - they have to be deployed in BOF.

See this example:

Creating a TBO - Karthik Sukumaran