断言条件以优化 XSD 中的查询 [英] Assert condition to optimize the query in XSD
问题描述
我有一个 XSD，我必须在其中使用断言条件.当指标='A'和少数列另一个条件是指标='D'时，我想打印条件的所有列.我有以下逻辑，但我有大约 100 列，所以有人可以帮助我优化查询吗?
<xs:assert test="if (indicator eq 'A')然后 test1 和 test2 和 test3 和 test4 和 test5 和 test6 和 test7else if (indicator eq 'B') then test1 and test3else false()"/>输入的 XML 格式如下:
`<?xml version="1.0" encoding="utf-8"?><p:CustomerElement xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><recordCount>1234</recordCount><客户><指标>A</指标><test1>hdjfs</test1><test2>idsfh</test2><test3>idsfh</test3><test4>idsfh</test4><test5>idsfh</test5><test6>idsfh</test6><test7>idsfh</test7></客户><客户><指标>B</指标><test1>abcd</test1><test2></test2><test3>uydshjk</test3><test4></test4><test5></test5><test6></test6><test7></test7></客户></p:CustomerElement>所以正如我提到的，当 A 填充所有列而 B 仅填充 2 列时.如果我写错了条件，请帮助我使用哪个条件.
指标的值只能确定为 A 或 B.
谢谢.
简化
<xs:assert test="if (indicator eq 'A')然后 test1 和 test2 和 test3 和 test4 和 test5 和 test6 和 test7else if (indicator eq 'B') then test1 and test3否则为假()"/>鉴于此声明，
<块引用>指标的值只能确定为 A 或 B.
允许 else 覆盖 B 案例:
<xs:assert test="if (indicator eq 'A')然后 test1 和 test2 和 test3 和 test4 和 test5 和 test6 和 test7否则 test1 和 test3"/>接下来，鉴于此声明[强调]，
<块引用>当 A 然后 所有 列填充而 B 只有 2 列时
为了避免枚举test1到test7的所有(特别是考虑到你提到的，><块引用>
我有大约 100 列
只限制断言中test1到test7的总数，
<xs:assert test="if (indicator eq 'A')然后(计数(*)= 8)否则 test1 和 test3"/>如果您已经在 parent 的内容模型中明确声明它们的存在，这将不亚于枚举它们.
作为最后一步，您可以将 if else 重写为逻辑上等价的
<xs:assert test="(指标 eq 'A' and count(*) = 8)或 (test1 和 test3)"/>但对这种形式的偏好与其前身相比主要是品味问题.
I have an XSD where i have to use assert condition. I would want to print all columns for condition when indicator='A' and few columns another condition is indicator='D'. I have the below logic but i have around 100 columns so can anyone help me with optimizing the query?
<xs:assert test="if (indicator eq 'A')
then test1 and test2 and test3 and test4 and test5 and test6 and test7
else if (indicator eq 'B') then test1 and test3
else false()"/>
The input XML is in this format:
`<?xml version="1.0" encoding="utf-8"?>
<p:CustomerElement xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<recordCount>1234</recordCount>
<Customer>
<indicator>A</indicator>
<test1>hdjfs</test1>
<test2>idsfh</test2>
<test3>idsfh</test3>
<test4>idsfh</test4>
<test5>idsfh</test5>
<test6>idsfh</test6>
<test7>idsfh</test7>
</Customer>
<Customer>
<indicator>B</indicator>
<test1>abcd</test1>
<test2></test2>
<test3>uydshjk</test3>
<test4></test4>
<test5></test5>
<test6></test6>
<test7></test7>
</Customer>
</p:CustomerElement>
So as i mentioned when A then all columns populate and when B only 2 columns. If in case i have written the condition wrong, please help me on using which condition to use.
The values for indicator is A or B only for sure.
Thanks.
To simplify
<xs:assert test="if (indicator eq 'A')
then test1 and test2 and test3 and test4 and test5 and test6 and test7
else if (indicator eq 'B') then test1 and test3
else false()"/>
given this statement,
The values for indicator is A or B only for sure.
allow the else to cover the B case:
<xs:assert test="if (indicator eq 'A')
then test1 and test2 and test3 and test4 and test5 and test6 and test7
else test1 and test3"/>
Next, given this statement [emphasis added],
when A then all columns populate and when B only 2 columns
to avoid having to enumerate all of test1 through test7 (especially given that you mentioned,
i have around 100 columns
just constrain the total count of test1 through test7 in the assertion,
<xs:assert test="if (indicator eq 'A')
then (count(*) = 8)
else test1 and test3"/>
This will be no less strict than enumerating them if you've already declared their existence explicitly in the content model of parent.
As one last step, you might re-write if else to the logically equivalent,
<xs:assert test=" (indicator eq 'A' and count(*) = 8)
or (test1 and test3)"/>
but preference for this form over its predecessor is mostly a matter of taste.
这篇关于断言条件以优化 XSD 中的查询的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
