Thank you for your answer.
I tried the different syntax and had the same error. I don’t think that the error comes from the constructor.
In fact :
BigInteger:new("12345678901234567890”) returns an error
and
BigInteger:new("1234567890123456789”) runs correctly
I think that BaseX try to match the java type “BigInteger" into a XQuery type "xs:integer” which is not possible when the value is too big. And no syntax allows to avoid this mapping.
Is it possible ?
Thank you in advance André
On 5 Apr 2019, at 12:46, Martin Honnen martin.honnen@gmx.de wrote:
Am 05.04.2019 um 11:15 schrieb Andre Bovy:
Hi Chistian,
I am trying to use a very Big Integer in BaseX (9.1.2)
With this value : declare namespace BigInteger = "java:java.math.BigInteger";
BigInteger:new("12345678901234567890”)
I received : Cannot convert xs:string to xs:integer: "12345678901234567890”.
The java method that I used returns a BigInteger, but I just need the value as a String.
If you have the BigInteger returned from your Java method and want it as an XQuery string try
let $s as xs:string := BigInteger:toString($valueFromJavaMethod)
or
let $s as xs:string := $valueFromJavaMethod => BigInteger:toString()
e.g. a complete example that works for me with BaseX 9 is
declare namespace BigInteger = "java:java.math.BigInteger";
let $s as xs:string := BigInteger:TEN() => BigInteger:toString() return $s
Not sure about that problem with the constructor, with Saxon
declare namespace BigInteger = "java:java.math.BigInteger";
let $s as xs:string := BigInteger:new("12345678901234567890") => BigInteger:toString() return $s
runs fine as well but with BaseX I get the error you mentioned.