Getting maximum id

N a v a n e e t h

I have above XML file. I need to find out maximum value of the "id" attribute. I have done by getting all nodes and iterating through each one. I tried XPath also, but it don't have any method to find maximum value. Is there any other method to do this ? This XML file may have thousands of child nodes.

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led mike

N a v a n e e t h wrote:

I have done by getting all nodes and iterating through each one.

Is there a problem with that?

led mike

N a v a n e e t h

led mike wrote:

Is there a problem with that?

:) Nope. It works well. But is there any other alternative for doing this ? As I will have many nodes, this method may be performance costly.

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henningbenk

Try this one XPath-Expression: child[not(../child/@id > @id)]/@id

led mike

N a v a n e e t h wrote:

It works well. But is there any other alternative for doing this ? As I will have many nodes, this method may be performance costly.

"Premature optimization is the root of all evil (or at least most of it) in programming."[^] Source: Donald Knuth, "Computer Programming as an Art" 1974 Turing Award lecture

led mike