CWS - If a folder with a specific name already exists?

Greetings,

I was willing to know if there is an option / method which will help me to find out if a folder exists with a specific name whenever I'm trying to create a new folder using CWS?

At the moment the only way to know if a folder is already exists is to get an exception when using docMan.CreateFolder() which will return "Folder already exists with that name"

Is there another method which will return true / false if a folder already exists with that name.

Thank you.

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Comments

Ferdinand Prantl

I do not know about CWS. You can use REST API as a workaround. Nodes with returned (id === null) do not exist:

POST {ll-cgi-url}/api/v1/validation/nodescontent-type: application/x-www-form-urlencoded{  "parent_id": 2000  "names": [ "test1", "test2" ]}200{  "results": [    {      "name": "test1",      "id": null    },    {      "name": "test2",      "id": 12345    }  ]}

Make sure, that you send the request body properly encoded:

data = { ... }body = 'body=' + encodeURIComponent(JSON.stringify(data))

Nizar Ghazal

In CWS, you can do this:

try
{
//Check for Existing File
Node tempNode = new Node();
tempNode = docCli.GetNodeByName(ref otAuth, PARENT_ID, fileInfo.Name);

if (tempNode == null)
{
...

tempNode being anything except null means that the object is present in that location.

Does that help?

Shai Abadi

Quoted Nizar Ghazal on 05/07/2019 09:23 AM:

In CWS, you can do this:

try
{
//Check for Existing File
Node tempNode = new Node();
tempNode = docCli.GetNodeByName(ref otAuth, PARENT_ID, fileInfo.Name);

if (tempNode == null)
{
...

tempNode being anything except null means that the object is present in that location.

Does that help?

That is brilliant! Thank you very much!

Nizar Ghazal

One caveat with the above method: if the user token doesn't have permissions to all objects in that location, it might give you a false positive.

Tiago Vilhena

You need to decide what is the scenario you will face more often.

If it is more likely that the folder already exists then the correct approach is the one mentioned.

If you are going to end up creating new folders and only sometimes the new one exists then the above solution will have you waste an additional webservice call.
You should attempt to create it anyway, "catch" the exception for "item with the same name already exists" and then GetNodeByName.

try
{
Create Node
}
catch(Exception e)
{
if(e.Message.Contains("exists")
{
GetNodeByName
}

}

Best Regards,
Tiago Vilhena

Shai Abadi

You are actually right. This is what I did at the beginning and didn't know how I can use that exception as advantage. Now you have filled the code that I was missing. Thanks!

Quoted Tiago Vilhena on 05/19/2019 06:31 AM:

try
{
Create Node
}
catch(Exception e)
{
if(e.Message.Contains("exists")
{
GetNodeByName
}

}

Best Regards,
Tiago Vilhena

sıɹɥɔ

(The below is, of course, pseudo-code. So just to help others who happen upon this thread….)

To properly detect the situation when coding this you wouldn’t actually catchException, or make a test against the corresponding error message. Instead you’d catchSOAPFaultException, and then obtain the error code from that object to compare against constantDocMan.DuplicateName.

Hope this helps,

-chris

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Subject: CWS - If a folder with a specific name already exists? 2

CWS - If a folder with a specific name already exists? 2

Posted byshai.abadi@ness-tech.co.il (Abadi, Shai) On 05/19/2019 06:31 AM

You are actually right. This is what I did at the beginning and didn't know how I can use that exception as advantage. Now you have filled the code that I was missing. Thanks!

Quoted Tiago Vilhena on 05/19/2019 06:31 AM:

try
{
Create Node
}
catch(Exception e)
{
if(e.Message.Contains("exists")
{
GetNodeByName
}

}

Best Regards,
Tiago Vilhena