MarkLogic mlcp导入报错：arg3非node()类型，字符串转换异常

使用MLCP导入文档时，通过自定义XQuery转换脚本修改文档URI，过程中出现类型转换错误。错误码为XDMP-ARGTYPE（err:XPTY0004），提示temporal:document-insert的第三个参数不是node()类型。尝试过两种修改方式（获取text()节点、使用fn:string转换），均未解决问题，寻求原因排查。

自定义XQuery代码 #

xquery version "1.0-ml";
module namespace doc = "http://marklogic.com/example";

declare function doc:transform(
  $content as map:map,
  $context as map:map
) as map:map*
{
  let $systemref := map:get($content, "value")/EDILogFile/SystemRef
  let $_ := map:put($content, "value","EDI"||"_"||$systemref||"xml")
  return
    $content
};

错误日志 #

23/01/17 09:17:46 ERROR contentpump.TransformWriter: Batch 1795441416.0: Document failed permanently: /opt/mlcp-10.0.9-bin/mlcp-10.0.9/bin/data/EDI_22000041.xml
23/01/17 09:17:46 WARN contentpump.TransformWriter: <error:format-string xmlns:error="http://marklogic.com/xdmp/error" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">XDMP-ARGTYPE: (err:XPTY0004) temporal:document-insert(xs:untypedAtomic("Unitempcoll"), "/opt/mlcp-10.0.9-bin/mlcp-10.0.9/bin/data/EDI_22000041.xml", "EDI_22000041xml", &lt;options xmlns="xdmp:document-insert"&gt;&lt;quality&gt;0&lt;/quality&gt;&lt;metadata/&gt;&lt;/options&gt;) -- arg3 is not of type node()</error:format-string>
23/01/17 09:17:46 INFO contentpump.LocalJobRunner:  completed 100%
23/01/17 09:17:46 INFO contentpump.LocalJobRunner: com.marklogic.mapreduce.MarkLogicCounter:
23/01/17 09:17:46 INFO contentpump.LocalJobRunner: INPUT_RECORDS: 1
23/01/17 09:17:46 INFO contentpump.LocalJobRunner: OUTPUT_RECORDS: 1
23/01/17 09:17:46 INFO contentpump.LocalJobRunner: OUTPUT_RECORDS_COMMITTED: 0
23/01/17 09:17:46 INFO contentpump.LocalJobRunner: OUTPUT_RECORDS_FAILED: 1

已尝试的修改方式 #

• 获取text()节点：

  map:get($content, "value")/EDILogFile/SystemRef/text()
  

• 使用fn:string转换：

  let $systemref := fn:string(map:get($content, "value")/EDILogFile/SystemRef)
  

内容的提问来源于stack exchange，提问作者Rashmita Purkayastha