XQuery 小结

dawson — Tue, 13 May 2008 10:11:00 GMT

1.自定义的一个简单的XQuery 函数

define function conFun($n as xs:string) as xs:string{
let $res:=concat($n,"one dream !")
return $res
}

let $chart:=" one world "
return conFun($chart)

2.从MarkLogic 的查询窗口中导入一个 XML 文件
xdmp:document-load("d:\books.xml",

      books.xml
      none
      {xdmp:default-permissions()}
    )

3.察看MarkLogic已有的XML 文件
for $i in input()
return base-uri($i)

4.可以运行的一个函数

define function testFun($name as xs:string) as xs:string*{
for $b in doc($name)/bib/book
where $b/publisher = "Addison-Wesley" and $b/@year > 1991
return data ($b/title)
}

let $n :="http://www.bn.com/bib.xml"
return testFun($n)

一.注意有as 如果有多行值有sring*.

define function testFun($name as xs:string) as node()*{
for $b in doc($name)/bib/book
where $b/publisher = "Addison-Wesley" and $b/@year > 1991
return

     { $b/title }

}

let $n :="http://www.bn.com/bib.xml"
return testFun($n)

不带参数的情形
define function testFunBook() as xs:string*{
for $b in doc("http://www.bn.com/bib.xml")/bib/book
where $b/publisher = "Addison-Wesley" and $b/@year > 1991
return $b/title
}

let $a:= testFunBook()
return $a

5.默认命名空间的问题

6.删除文档
xdmp:document-delete("books.xml")

dawson 2008-05-13 18:11 发表评论

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XQuery 小结