如何根据另一个属性的值选择一个属性 [英] How to select an attribute based on another attribute's value

问题描述

当 Credit_Term_Code="4" 在 XSLT 中循环时，我需要选择 NativeDescription 值:

I need to select the NativeDescription value when Credit_Term_Code="4" by looping in XSLT:

<Credit_code_parents>
  <Credit_Term_parent Credit_Term_Code="1" NativeDescription="Letter of Credit" EnglishDescription="Letter of Credit" />
  <Credit_Term_parent Credit_Term_Code="2" NativeDescription="Cash on Delivery" EnglishDescription="Cash on Delivery" />
  <Credit_Term_parent Credit_Term_Code="3" NativeDescription="Contract" EnglishDescription="Contract" />
  <Credit_Term_parent Credit_Term_Code="4" NativeDescription="Net" EnglishDescription="Net" />
  <Credit_Term_parent Credit_Term_Code="5" NativeDescription="Contract" EnglishDescription="Contract" />
  <Credit_Term_parent Credit_Term_Code="6" NativeDescription="Net" EnglishDescription="Net" />
  <Credit_Term_parent Credit_Term_Code="7" NativeDescription="Contract" EnglishDescription="Contract" />
  <Credit_Term_parent Credit_Term_Code="8" NativeDescription="Net" EnglishDescription="Net" />
</Credit_code_parents>

推荐答案

使用 Credit_Term_Code 选择 Credit_Term_parent 元素的 NativeDescription 属性等于 4，使用以下 XPath 之一:

To select the NativeDescription attribute of the Credit_Term_parent element with a Credit_Term_Code equal to 4, use one of the following XPaths:

1. 如果Credit_Term_parent上面的祖先结构是固定的，如下所示:

1. If the ancestral structure above Credit_Term_parent is fixed as shown:

/Credit_code_parents/Credit_Term_parent[@Credit_Term_Code='4']/@NativeDescription

如果上面有潜在的可变祖先结构Credit_Term_parent(并假设提供的 Credit_Term_Code 在整个文档中是唯一的):

If there's potentially variable ancestral structure above Credit_Term_parent (and assuming that the provided Credit_Term_Code is unique across the document):

//Credit_Term_parent[@Credit_Term_Code='4']/@NativeDescription

您要求 XSLT 循环代码:

<xsl:for-each select="/Credit_code_parents/Credit_Term_parent">
   <xsl:if test="@Credit_Term_Code=4">
     <xsl:value-of select="@Credit_Term_parent"/>
   </xsl:if>
</xsl:for-each>

或者，没有循环:

 <xsl:value-of
          select="//Credit_Term_parent[@Credit_Term_Code='4']/@NativeDescription"/>

...或者，使用上面#1 中的XPath 而不是#2 中的XPath.

...or, alternatively, use the XPath from #1 above instead of the one from #2.

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