Unable to change file path

Development Pipeline & Plugins
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1

Hello,

I’m using Dataprep to import an FBX file, and running into some difficulties of arranging my data.

I have the following on import:

[Image Removed]

I’ll discuss textures here, but in reality I need this for all parts of the imported resources.

Here, I have Terrain_4x7 texture in the folder Terrain_4x7_fbx\Textures

I want it to be in the folder Terrain_4x7\TestTextures

If I use the Output to Folder operation, I can only do one folder level at a time. It does not take / or \ so only one folder level can be specified. If I stack two of these operations, with a single folder level name in it…it just takes one of the folders…latest I believe. So instead of the texture being in Terrain_4x7\TestTextures, it actually comes out of the top level folder and now gets dumped into just \TestTextures\

[Image Removed]

I tried to make a custom operation…

And what I found out, is that I can change the file name of the texture, I can access and print out the current temp path of the texture, but I see no way to actually specify or change the path of the texture by a blueprint.

[Image Removed]

How would I go about telling Dataprep to place my texture or other resource into specific folder path? More precisely a folder structure like Folder1\Folder2\MyTextures and not just MyTextures

V/R,

--Maxim

2

[mention removed]​ You commented on a similar problem here:

https://forums.unrealengine.com/t/change-name-of-asset-in-dataprep/245064

I was wondering if you had some ideas with my problem… in this case…I need to change the path, not the name.

[mention removed]​ You helped before with data prep issues, I wonder if you know anything about this.

3

Hi Maxim,

Unfortunately, I do not know anything about this. I will have to investigate. In the mean time, I created a ticket so you can track the resolution of your issue: UE-273984. The link may take some days to become operational.

Thanks for your patience.

Regards,

Jean-Luc

4

Hi Maxim,

I copied the wrong URL. Sorry about that.

Here is the correct one: UE-273984 It is still not operational but it should become operational soon.

Let me know if you still cannot access within a couple of days.

Thanks.

Regards,

Jean-Luc

5

[mention removed]​

I can get to the link now. Do you know if this is a bug, something I just did not find, or a missing feature that will need to be implemented?

6

Hi Maxim,

I had a quick look at the code and this definitely looks like a bug. Unfortunately, I currently do not have time to look any deeper into it.

I’ll let you know as soon as I found the root cause and a fix.

Thanks for your patience.

Regards,

Jean-Luc

P.S. Do not hesitate to ping me back if you do not hear from me.

7

Hi Maxim,

I did have a deeper look into this issue. I found a fix to allow users to specify a relative path instead of a single folder name.

The fix will not go in the coming release. It is too late for that. Sorry.

However, you can make a local modification if you want.

Below is the fixed code to replace the FDataprepSetOutputFolderDetails::FolderName_TextChanged method in [UE_INSTALL_DIR]Engine\Plugins\Enterprise\DataprepEditor\Source\DataprepLibraries\Private\DataprepOperations.cpp starting line 462:

`void FDataprepSetOutputFolderDetails::FolderName_TextChanged(const FText& Text)
{
// Slash and Square brackets are invalid characters for a folder name
const FString InvalidChars = INVALID_OBJECTPATH_CHARACTERS TEXT(“.”);

FText ErrorMessage;
FString FolderPath = Text.ToString();

if (FolderPath.Len() == 0)
{
ErrorMessage = LOCTEXT(“InvalidFolderName_PathEmpty”, “A folder path must be at least one character long”);
}
else if (FolderPath.StartsWith(TEXT(“/”)))
{
ErrorMessage = LOCTEXT(“InvalidFolderName_MustBeRelative”, “A folder path must be relative”);
}
else
{
// See if the name contains invalid characters.
FString Char;
for (int32 CharIdx = 0; CharIdx < FolderPath.Len(); ++CharIdx)
{
Char = FolderPath.Mid(CharIdx, 1);

if (InvalidChars.Contains(*Char))
{
FString ReadableInvalidChars = InvalidChars;
ReadableInvalidChars.ReplaceInline(TEXT(“\r”), TEXT(“”));
ReadableInvalidChars.ReplaceInline(TEXT(“\n”), TEXT(“”));
ReadableInvalidChars.ReplaceInline(TEXT(“\t”), TEXT(“”));

ErrorMessage = FText::Format(LOCTEXT(“InvalidFolderName_InvalidCharacters”, “A folder path may not contain any of the following characters: {0}”), FText::FromString(ReadableInvalidChars));
break;
}
}

}

if (!ErrorMessage.IsEmpty() || !FFileHelper::IsFilenameValidForSaving(FolderPath, ErrorMessage))
{
TextBox->SetError(ErrorMessage);
}
else
{
// Clear error
TextBox->SetError(FText::GetEmpty());
}

bValidFolderName = ErrorMessage.IsEmpty();
}`I hope it helps.

Regards,

Jean-Luc

8

Hi [mention removed]​

I’m testing it now… will report if it worked.

I did notice that if you place \ instead of / in the path, that the folder name does get broken. If you sat Test\Texture, you will get a folder Test\Texture in the folder called Test. Test>Test\Texture

Don’t know what’s better…to list \ as an illegal character, or make a translation from one to the other.

9

Also…

I can access the texture setting node in the main DataPrep:

[Image Removed]But is there a blueprint version of the same node, so I can access it from a custom dataprep operation? None of the ones I attempted to use worked so far:

[Image Removed]

10

Hi Maxim,

Here is the BP node to use to apply the sub-folder to the assets part of the Dataprep context:

/SetSubOutputFolder​

Regards,

Jean-Luc

11

Hi [mention removed]​

It seems your message got cut out…

[Image Removed]

12

Hi Maxim,

It looks like I do not have the right to share a linked image :unamused_face:

I have uploaded the image and a zip of it in the attachments section of this report. Let me know if you can access it,

Regards,

Jean-Luc

13

Hm… I don’t see any attachments at all from here.

14

[mention removed]​ Funny enough though, I went through my emails and it seems when you made the original disappearing link, it did send me the name of the BP. It just hid it here.

[Image Removed]I actually had it in some of my tests before, but I had it hooked up to a package for object instead of the original object. It works now though!

15

Hi Maxim,

Good to read that you were able to get the image and move forward.

Regards,

Jean-Luc

16

[mention removed]​ Is this link authenticated with my normal epic account, or do I need to have another access granted for this?