Typecasting DB Nodes

[dulux-oz]

Hi Guys,

Does FG has a caste() or typecaste() function? I want to copy a DB String Node to a DB Number Node.

Thanks

[Trenloe]

I don't think so. You'll have to get the data from the source with getValue() then set the type when you create the new database node with either https://www.fantasygrounds.com/refdoc/databasenode.xcp#createChild (based off an existing databasenode and creating a child to that database node) or if you're using the DB package: https://www.fantasygrounds.com/refdoc/DB.xcp#createNode or https://www.fantasygrounds.com/refdoc/DB.xcp#setValue or https://www.fantasygrounds.com/refdoc/DB.xcp#createChild

[dulux-oz]

OK, thanks Trenloe - just a thought, I'll see if I can come up with another solution. :)

Cheers

[Trenloe]

Unless there is something written as a helper function in CoreRPG. If not, write a helper function yourself. It would be a few lines of code at the most. Pass the source database node and target node name to the function, get the value of the source node, check if the string can be converted to a valid number and then use DB.setValue(targetnode, type, value). 3-5 lines of code max, put the helper function in a new manager .lua file, load the file with a name (e.g. CopyNodeHelper) from base.xml (or extension.xml) and then reference the name.function when you use the the new helper function whenever you need - e.g. CopyNodeHelper.copyStringNodeToNumberNode(source node, targetnode)

[dulux-oz]

Unless there is something written as a helper function in CoreRPG. If not, write a helper function yourself. It would be a few lines of code at the most. Pass the source database node and target node name to the function, get the value of the source node, check if the string can be converted to a valid number and then use DB.setValue(targetnode, type, value). 3-5 lines of code max, put the helper function in a new manager .lua file, load the file with a name (e.g. CopyNodeHelper) from base.xml (or extension.xml) and then reference the name.function when you use the the new helper function whenever you need - e.g. CopyNodeHelper.copyStringNodeToNumberNode(source node, targetnode)

Yeah, that's basically what I've done - thanks mate. :)

[Moon Wizard]

There are actually several cast functions built into Lua to convert between number and string.

You can use [tonumber(string) or 0] to get a number from a string.

And you can use to ["" .. number] or [tostring(number)] or [string.format("%d", number)] to convert a number to a string.

Cheers,
JPG

[dulux-oz]

Yeah, thanks Moon - that's basically what I used :)

Cheers