And a complementary remark: You can also use the built-in function out:format (it will be optimized better than Java functions):

let $string := 'Format string: %1$d - %2$s' let $i := 1 let $j := 'text' return out:format($string, $i, $j)

For formatting numbers, XQuery provides the function fn:format-number:

format-number(1, '0000')

Best, Christian

On Tue, Apr 23, 2019 at 6:41 AM Johannes Bauer johannes.bauer@tanner.de wrote:

Hi Luan,

try this:

declare namespace java = "java:java.lang.String";

let $string := 'Format string: %1$d - %2$s' let $i := 1 let $j := 'text' let $args := ($i, $j)

return java:format($string, $args)

Best regards Johannes

Am 23.04.2019 um 06:29 schrieb Luan Bui:

Hello all, How can I call a method with variable arguments in BaseX with Java binding? I am trying to do this:

    let $string := 'Format string: %1$d - %2$s'
let $i := 1
let $j := 'text'
return Q{java.lang.String}format·java.lang.String·java.lang.Object*($string, $string, $i, $j)

However, I got the error: [XPDY0002] {java.lang.String}format·java.lang.Stri...: Context is undeclared. Thank you for your time.

In that case Johannes’ approach might be the solution.

I say “might”, though, because it’s not always possible to uniquely address Java functions and process their result (addressing varargs is just one example). If you have more than a single Java call in your code, and if it turns that it cannot be written in XQuery, it might be a better option to write a dedicated Java class that does the detail work and returns a single result to XQuery.

On Tue, Apr 23, 2019 at 9:01 AM Luan Bui luan.bui@tanner.de wrote:

Hi all, Thanks for your answers. Actually I have to use Java binding to call some methods, the code which I provided is just an example. I wanted to call this method:

public ProcessingResult process(List<Document> documents, String queryHint, Class<?>... processingComponentClasses) throws ProcessingException

(https://get.carrot2.org/stable/javadoc/org/carrot2/core/Controller.html#proc...)

On 4/23/2019 13:51, Christian Grün wrote:

And a complementary remark: You can also use the built-in function out:format (it will be optimized better than Java functions):

let $string := 'Format string: %1$d - %2$s' let $i := 1 let $j := 'text' return out:format($string, $i, $j)

For formatting numbers, XQuery provides the function fn:format-number:

format-number(1, '0000')

Best, Christian

On Tue, Apr 23, 2019 at 6:41 AM Johannes Bauer johannes.bauer@tanner.de wrote:

Hi Luan,

try this:

declare namespace java = "java:java.lang.String";

let $string := 'Format string: %1$d - %2$s' let $i := 1 let $j := 'text' let $args := ($i, $j)

return java:format($string, $args)

Best regards Johannes

Am 23.04.2019 um 06:29 schrieb Luan Bui:

Hello all, How can I call a method with variable arguments in BaseX with Java binding? I am trying to do this:

    let $string := 'Format string: %1$d - %2$s'
let $i := 1
let $j := 'text'
return Q{java.lang.String}format·java.lang.String·java.lang.Object*($string, $string, $i, $j)

However, I got the error: [XPDY0002] {java.lang.String}format·java.lang.Stri...: Context is undeclared. Thank you for your time.

-- With best regards,

Bui The Luan (Mr.) Lead Software Developer

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tel. +84 28 3997 3452 - 103 fax. +84 28 3997 3465 mobi. +84 168 688 0001 luan.bui@tanner.de http://www.tanner.vn

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