Link existing attribute to MassPrpMass

Submitted by schweigk on Fri, 02/05/2016 - 01:02

Forums:

Hello,

I would like to create a journal which links the mass prop mass attribute to another on.
I recorded the below shown journal but the line 124 linkes the transfer attribute with the p40 expression.
is there a way to check which expression is created for the transfer and use this instead?

Thanks

Klaus

' NX 9.0.3.4
' Journal created by schweigk on Fri Feb 05 09:28:57 2016 W. Europe Standard Time
'
Option Strict Off
Imports System
Imports NXOpen

Module NXJournal
Sub Main (ByVal args() As String)

Dim theSession As Session = Session.GetSession()
Dim workPart As Part = theSession.Parts.Work

Dim displayPart As Part = theSession.Parts.Display

' ----------------------------------------------
' Menu: Tools->Expressions...
' ----------------------------------------------
theSession.Preferences.Modeling.UpdatePending = False

Dim markId1 As Session.UndoMarkId
markId1 = theSession.SetUndoMark(Session.MarkVisibility.Visible, "Expression")

Dim markId2 As Session.UndoMarkId
markId2 = theSession.SetUndoMark(Session.MarkVisibility.Visible, "Start")

Dim objects1(0) As NXObject
objects1(0) = workPart
Dim attributePropertiesBuilder1 As AttributePropertiesBuilder
attributePropertiesBuilder1 = theSession.AttributeManager.CreateAttributePropertiesBuilder(workPart, objects1, AttributePropertiesBuilder.OperationType.None)

attributePropertiesBuilder1.IsArray = False

attributePropertiesBuilder1.DataType = AttributePropertiesBaseBuilder.DataTypeOptions.String

attributePropertiesBuilder1.Units = "MilliMeter"

attributePropertiesBuilder1.DataType = AttributePropertiesBaseBuilder.DataTypeOptions.Number

Dim objects2(0) As NXObject
objects2(0) = workPart
attributePropertiesBuilder1.SetAttributeObjects(objects2)

attributePropertiesBuilder1.Units = "MilliMeter"

theSession.SetUndoMarkName(markId2, "Attributes Dialog")

attributePropertiesBuilder1.DateValue.DateItem.Day = DateItemBuilder.DayOfMonth.Day05

attributePropertiesBuilder1.DateValue.DateItem.Month = DateItemBuilder.MonthOfYear.Feb

attributePropertiesBuilder1.DateValue.DateItem.Year = "2016"

attributePropertiesBuilder1.DateValue.DateItem.Time = "00:00:00"

' ----------------------------------------------
' Dialog Begin Attributes
' ----------------------------------------------
attributePropertiesBuilder1.Title = ""

attributePropertiesBuilder1.Units = "MilliMeter"

attributePropertiesBuilder1.IsArray = False

attributePropertiesBuilder1.Units = ""

attributePropertiesBuilder1.IsArray = False

attributePropertiesBuilder1.StringValue = ""

attributePropertiesBuilder1.Units = "MilliMeter"

attributePropertiesBuilder1.IsArray = False

attributePropertiesBuilder1.Category = "Materials"

attributePropertiesBuilder1.Title = "MassPropMass"

attributePropertiesBuilder1.Units = "MilliMeter"

attributePropertiesBuilder1.IsArray = False

attributePropertiesBuilder1.Units = "Kilogram"

attributePropertiesBuilder1.NumberValue = 0.0272857775984746

attributePropertiesBuilder1.IsArray = False

Dim markId3 As Session.UndoMarkId
markId3 = theSession.SetUndoMark(Session.MarkVisibility.Invisible, "Attributes")

theSession.DeleteUndoMark(markId3, Nothing)

Dim markId4 As Session.UndoMarkId
markId4 = theSession.SetUndoMark(Session.MarkVisibility.Invisible, "Attributes")

theSession.DeleteUndoMark(markId4, Nothing)

theSession.SetUndoMarkName(markId2, "Attributes")

attributePropertiesBuilder1.Destroy()

Dim expression1 As Expression
expression1 = workPart.Expressions.GetAttributeExpression(workPart, "MassPropMass", NXObject.AttributeType.Real, -1)

Dim markId5 As Session.UndoMarkId
markId5 = theSession.SetUndoMark(Session.MarkVisibility.Visible, "Expression")

Dim unit1 As Unit = CType(workPart.UnitCollection.FindObject("Kilogram"), Unit)

Dim expression2 As Expression
expression2 = workPart.Expressions.CreateWithUnits("MASS_TRANSFER=p40", unit1)

Dim nullUnit As Unit = Nothing

Dim expression3 As Expression
expression3 = workPart.Expressions.CreateWithUnits("WEIGHT_Attribute=ug_setPartAttrValue(""WEIGHT"",format(""%0.3f kg"",MASS_TRANSFER))", nullUnit)

theSession.Preferences.Modeling.UpdatePending = False

Dim nErrs1 As Integer
nErrs1 = theSession.UpdateManager.DoUpdate(markId5)

theSession.CleanUpFacetedFacesAndEdges()

' ----------------------------------------------
' Menu: Tools->Journal->Stop Recording
' ----------------------------------------------

End Sub
End Module

re: link mass attribute

NXJournaling - Wed, 02/10/2016 - 13:46

In your code, "expression1" is the expression that the system attribute "MassPropMass" is linked to. Knowing this, you can use the name of the expression in place of "p40".

Instead of:

expression2 = workPart.Expressions.CreateWithUnits("MASS_TRANSFER=p40", unit1)

Use this:

expression2 = workPart.Expressions.CreateWithUnits("MASS_TRANSFER=" & expression1.Name, unit1)

How to add two expressions.

Praveenkumarkn - Thu, 04/21/2016 - 21:12

Is there any possibility to add the two expression written in journal, for example if I have created expression1 and expression2 to be added as expression1+" "+expression2 in expressions.

re: add expressions

NXJournaling - Fri, 04/22/2016 - 04:53

See the article on creating expressions:
http://nxjournaling.com/content/expressions-creating-expressions-no-units

Especially the section titled:
"Create A Number Expression (Unitless), Specifying A Formula Using Other Expressions"

Thanks for the reply

Praveenkumarkn - Sun, 04/24/2016 - 22:16

Thanks for the reply
I have tried it and it works fine....
But what I need to know is, if I create an expression with name called "DESCRIPTION" and for this expression I want to link the attributes in the format p123+" "+p456 (where "p" will differ in other parts). Is there any possibility to have such expressions?. Please let me know if it is possible

re: link attributes

NXJournaling - Mon, 04/25/2016 - 06:21

What version of NX are you using?

Also, are all of the attributes that you want to link contained in the same file?

I am using NX 9.0.2, and all

Praveenkumarkn - Mon, 04/25/2016 - 19:53

I am using NX 9.0.2, and all the attributes which have to be linked to the expressions are in the same file.
For example : I have two attributes DWG_TITLE & DWG_TITLE2, these attributes have to be linked to the expression DESCRIPTION.
So the expression would look like this
DESCRIPTION (AS A STRING) = p123+" "+p456 (Where "p123" & "p456" denotes DWG_TITLE & DWG_TITLE2 respectively).
So will it be possible to relate these attributes to the expression ?

Thank you for your support and help.

Solution for Linking part attributes to expressions

Praveenkumarkn - Wed, 04/27/2016 - 21:20

Hello,

Is there any possibility for the requirement stated in my previous reply ?
Please help me to resolve this issue.

re: link attribute expressions

NXJournaling - Thu, 04/28/2016 - 07:34

The following code will look for part attributes named "DWG_TITLE" and "DWG_TITLE2"; if they are found, it will create/update an expression named "DESCRIPTION" that uses the attribute values.

Option Strict Off
Imports System
Imports NXOpen

Module Module4

Sub Main()

Dim theSession As Session = Session.GetSession()
If IsNothing(theSession.Parts.BaseWork) Then
'active part required
Return
End If

Dim workPart As Part = theSession.Parts.Work
Dim lw As ListingWindow = theSession.ListingWindow
lw.Open()

Const attributeName1 As String = "DWG_TITLE"
Const attributeName2 As String = "DWG_TITLE2"
Const expName As String = "DESCRIPTION"

If Not workPart.HasUserAttribute(attributeName1, NXObject.AttributeType.String, -1) Then
lw.WriteLine("attribute " & attributeName1 & " not found, journal exiting")
Return
End If

If Not workPart.HasUserAttribute(attributeName2, NXObject.AttributeType.String, -1) Then
lw.WriteLine("attribute " & attributeName2 & " not found, journal exiting")
Return
End If

'get the underlying attribute expressions
Dim attExp1 As Expression = workPart.Expressions.GetAttributeExpression(workPart, attributeName1, NXObject.AttributeType.String, -1)
Dim attExp2 As Expression = workPart.Expressions.GetAttributeExpression(workPart, attributeName2, NXObject.AttributeType.String, -1)

'create/update the description expression using the attribute expressions
Dim expDescription As Expression = Nothing
Try
expDescription = workPart.Expressions.CreateExpression("String", expName & " = " & attExp1.Name & " + "" """ & " + " & attExp2.Name)
Catch ex As NXException
If ex.ErrorCode = 1050017 Then
'expression already exists

'get the existing expression
expDescription = workPart.Expressions.FindObject(expName)

Dim markId2 As Session.UndoMarkId
markId2 = theSession.SetUndoMark(Session.MarkVisibility.Invisible, "Expression edit")

'update the formula
expDescription.RightHandSide = attExp1.Name & " + "" """ & " + " & attExp2.Name

Dim nErrs1 As Integer
nErrs1 = theSession.UpdateManager.DoUpdate(markId2)
Else
'other error
lw.WriteLine("NX exception: " & ex.ErrorCode & ", " & ex.Message)

End If

End Try

lw.Close()

End Sub

Public Function GetUnloadOption(ByVal dummy As String) As Integer

'Unloads the image immediately after execution within NX
GetUnloadOption = NXOpen.Session.LibraryUnloadOption.Immediately

End Function

End Module

Thanks for the code

Praveenkumarkn - Thu, 04/28/2016 - 19:40

Hello,
The code works as expected. Thank you very much for your kind help and support.

Regards,
Praveen

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Link existing attribute to MassPrpMass

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