simplest Unostructure that supports he getByName - libreoffice

Question

In LibreOffice Basic sub I use a bunch of uno properties in an array. Which is the simplest Unostructure or UnoService that I must "embed" them, in order to use the getByName "function"?
Example:
dim props(1) as new com.sun.star.beans.PropertyValue
props(0).Name = "blahblah1"
props(0).Value = "blahblah1Value"
props(1).Name = "blahblah2"
props(1).Name = 3000
I want to be able to use something like:
b = props.getByName("blahblah2").Value
or something like (assuming I "assigned" them in a structure-like-object called "somestruct") :
b = somestruct.getprops.getByName("blahblah2").Value
As I understand that this can be done by creating a "UnoService" which supports the getByName and then, somehow, assigning these props to this service
Which is the "lightest" such service?
(I mean the service that uses less resources)
Thanks in advance.

Answer 1

Really supporting the interface XNameAccess is not as easy. The services which implement this interface are supposed using this interface for existing named properties, not for own created ones.
But you can use the service EnumerableMap to achieve what you probably want.
Example:
sub testEnumerableMap
serviceEnumerableMap = com.sun.star.container.EnumerableMap
oEnumerableMap = serviceEnumerableMap.create("string", "any")
oEnumerableMap.put("blahblah1", "blahblah1Value")
oEnumerableMap.put("blahblah2", 3000)
oEnumerableMap.put("blahblah3", 1234.67)
msgbox oEnumerableMap.get("blahblah1")
msgbox oEnumerableMap.get("blahblah2")
msgbox oEnumerableMap.get("blahblah3")
'msgbox oEnumerableMap.get("blahblah4") 'will throw error
msgbox oEnumerableMap.containsKey("blahblah2")
msgbox oEnumerableMap.containsValue(3000)
if oEnumerableMap.containsKey("blahblah4") then
msgbox oEnumerableMap.get("blahblah4")
end if
end sub
But starbasic with option Compatible is also able supporting Class programming like VBA does.
Example:
Create a module named myPropertySet. Therein put the following code:
option Compatible
option ClassModule
private aPropertyValues() as com.sun.star.beans.PropertyValue
public sub setProperty(oProp as com.sun.star.beans.PropertyValue)
bUpdated = false
for each oPropPresent in aPropertyValues
if oPropPresent.Name = oProp.Name then
oPropPresent.Value = oProp.Value
bUpdated = true
exit for
end if
next
if not bUpdated then
iIndex = ubound(aPropertyValues) + 1
redim preserve aPropertyValues(iIndex)
aPropertyValues(iIndex) = oProp
end if
end sub
public function getPropertyValue(sName as string) as variant
getPropertyValue = "N/A"
for each oProp in aPropertyValues
if oProp.Name = sName then
getPropertyValue = oProp.Value
exit for
end if
next
end function
Then within a standard module:
sub testClass
oPropertySet = new myPropertySet
dim prop as new com.sun.star.beans.PropertyValue
prop.Name = "blahblah1"
prop.Value = "blahblah1Value"
oPropertySet.setProperty(prop)
prop.Name = "blahblah2"
prop.Value = 3000
oPropertySet.setProperty(prop)
prop.Name = "blahblah3"
prop.Value = 1234.56
oPropertySet.setProperty(prop)
prop.Name = "blahblah2"
prop.Value = 8888
oPropertySet.setProperty(prop)
msgbox oPropertySet.getPropertyValue("blahblah1")
msgbox oPropertySet.getPropertyValue("blahblah2")
msgbox oPropertySet.getPropertyValue("blahblah3")
msgbox oPropertySet.getPropertyValue("blahblah4")
end sub

Answer 2

LibreOffice Basic supports the vb6 Collection type.
Dim coll As New Collection
coll.Add("blahblah1Value", "blahblah1")
coll.Add(3000, "blahblah2")
MsgBox(coll("blahblah1"))
Arrays of property values are the only thing that will work for certain UNO interfaces such as dispatcher calls. If you simply need a better way to deal with arrays of property values, then use a helper function.
Sub DisplayMyPropertyValue
Dim props(0 To 1) As New com.sun.star.beans.PropertyValue
props(0).Name = "blahblah1"
props(0).Value = "blahblah1Value"
props(1).Name = "blahblah2"
props(1).Name = 3000
MsgBox(GetPropertyByName(props, "blahblah1"))
End Sub
Function GetPropertyByName(props As Array, propname As String)
For Each prop In props
If prop.Name = propname Then
GetPropertyByName = prop.Value
Exit Function
End If
Next
GetPropertyByName = ""
End Function
XNameAccess is used for UNO containers such as Calc sheets. Normally these containers are obtained from the UNO interface, not created.
oSheet = ThisComponent.Sheets.getByName("Sheet1")
May UNO objects support the XPropertySet interface. Normally these are also obtained from the UNO interface, not created.
paraStyleName = cellcursor.getPropertyValue("ParaStyleName")
It may be possible to create a new class in Java that implements XPropertySet. However, Basic uses helper functions instead of class methods.

Answer 3

I think the serviceEnumerableMap is the answer (so far). Creating the values and searching them was much faster then creating props in a dynamic array and searching them with a for loop in basic.
(I do not "dare" to use "option Compatible", although I was a big fun of VB6 and VBA, because of the problems in code that maybe arise).
I used this code to test time in a form:
SUB testlala(Event)
TESTPROPS(Event)
' TESTENUM(Event)
MSGBOX "END OF TEST"
END SUB
SUB TESTENUM(Event)
DIM xcounter AS LONG
'b = now()
serviceEnumerableMap = com.sun.star.container.EnumerableMap
oEnumerableMap = serviceEnumerableMap.create("string", "any")
FOR xcounter= 0 TO 10000
oEnumerableMap.put("pr" & FORMAT(xcounter,"0000"), xcounter -10000)
NEXT
'b=now()-b
b = now()
FOR xcounter = 1 TO 5000
lala = Int((9000 * Rnd) +1)
g =oEnumerableMap.get("pr" & FORMAT(lala,"0000"))
'MSGBOX GetValueFromName(props,"pr" & FORMAT(xcounter,"0000"))
NEXT
b=now()-b
MSGBOX b*100000
END SUB
SUB TESTPROPS(Event)
DIM props()
DIM xcounter AS LONG
'b = now()
FOR xcounter= 0 TO 10000
AppendProperty(props,"pr" & FORMAT(xcounter,"0000"), xcounter -10000)
NEXT
'b=now()-b
b = now()
FOR xcounter = 1 TO 5000
lala = Int((9000 * Rnd) +1)
g = GetValueFromName(props,"pr" & FORMAT(lala,"0000"))
'MSGBOX GetValueFromName(props,"pr" & FORMAT(xcounter,"0000"))
NEXT
b=now()-b
MSGBOX b*100000
END SUB
REM FROM Andrew Pitonyak's OpenOffice Macro Information ------------------
Sub AppendToArray(oData(), ByVal x)
Dim iUB As Integer 'The upper bound of the array.
Dim iLB As Integer 'The lower bound of the array.
iUB = UBound(oData()) + 1
iLB = LBound(oData())
ReDim Preserve oData(iLB To iUB)
oData(iUB) = x
End Sub
Function CreateProperty(sName$, oValue) As com.sun.star.beans.PropertyValue
Dim oProperty As New com.sun.star.beans.PropertyValue
oProperty.Name = sName
oProperty.Value = oValue
CreateProperty() = oProperty
End Function
Sub AppendProperty(oProperties(), sName As String, ByVal oValue)
AppendToArray(oProperties(), CreateProperty(sName, oValue))
End Sub