如果for-each
不等于0或100,我必须从@PercentOfAmountActive
循环中断。
这是我的XML:
<SamplePointSet Id="1" StartDate="2012-01-01T04:00:00Z" CalendarId="1" Cyclic="6" ForAttribute="0" ObjectId="0" ProbabilityFunctionId="0" TableNumber="0" TimePeriodId="4" ParentId="1">
<SamplePoint NumberOfActiveTimePeriods="30" PercentOfAmountActive="100" Sequence="1" SamplePointSetId="1" />
<SamplePoint NumberOfActiveTimePeriods="30" PercentOfAmountActive="0" Sequence="2" SamplePointSetId="1" />
<SamplePoint NumberOfActiveTimePeriods="30" PercentOfAmountActive="100" Sequence="3" SamplePointSetId="1" />
<SamplePoint NumberOfActiveTimePeriods="30" PercentOfAmountActive="0" Sequence="4" SamplePointSetId="1" />
<SamplePoint NumberOfActiveTimePeriods="30" PercentOfAmountActive="100" Sequence="5" SamplePointSetId="1" />
<SamplePoint NumberOfActiveTimePeriods="30" PercentOfAmountActive="0" Sequence="6" SamplePointSetId="1" />
<SamplePoint NumberOfActiveTimePeriods="30" PercentOfAmountActive="100" Sequence="7" SamplePointSetId="1" />
<SamplePoint NumberOfActiveTimePeriods="30" PercentOfAmountActive="0" Sequence="8" SamplePointSetId="1" />
<SamplePoint NumberOfActiveTimePeriods="30" PercentOfAmountActive="100" Sequence="9" SamplePointSetId="1" />
<SamplePoint NumberOfActiveTimePeriods="30" PercentOfAmountActive="0" Sequence="10" SamplePointSetId="1" />
<SamplePoint NumberOfActiveTimePeriods="30" PercentOfAmountActive="100" Sequence="11" SamplePointSetId="1" />
<SamplePoint NumberOfActiveTimePeriods="30" PercentOfAmountActive="0" Sequence="12" SamplePointSetId="1" />
</SamplePointSet>
下面是xslt代码
<xsl:for-each select=".../CM:SamplePointSet/CM:SamplePoint">
<xsl:variable name="varActiveTimePeriod" select="./@NumberOfActiveTimePeriods * $varMultiple"/>
<xsl:variable name="varPercentOfAmountActive" select="./@PercentOfAmountActive"/>
<!-- . . . some Condition To break if (percent of amount active) not 0 or 100 -->
<xsl:value-of select="CMXsltExtObject:SetRecurenceRule($varActiveTimePeriod, $varPercentOfAmountActive, $varCalendarFrequency)"/>
</xsl:for-each>
有什么办法吗?
答案 0 :(得分:3)
避免在XSLT中使用每个循环。相反,在可能的情况下,将节点应用于模板,使用XPath仅定位那些合适的节点。
您可以通过仅将模板应用于这些节点来实现中断效果......
@PercentOfAmountActive
属性等于0或100 @PercentOfAmountActive
属性不等于0或100。以下是一个简化示例,您可以在this XMLPlayground运行。
<强> XML 强>
<root>
<node attr='0'>hello 1</node>
<node attr='100'>hello 2</node>
<node attr='0'>hello 3</node>
<node attr='100'>hello 4</node>
<node attr='1'>hello 5</node>
<node attr='0'>hello 6</node>
<node attr='100'>hello 7</node>
</root>
<强> XSLT 强>
<xsl:template match='/'>
<ul>
<xsl:apply-templates select='root/node[(@attr = 0 or @attr = 100) and not(preceding-sibling::*[@attr != 0 and @attr != 100])]' />
</ul>
</xsl:template>
<xsl:template match='node'>
<li><xsl:value-of select='.' /></li>
</xsl:template>
只输出前四个节点,一旦我们点击了一个不合适的节点,就会模拟“中断”效果。
答案 1 :(得分:2)
xsl:for-each指令不是循环,它是从输入序列到输出序列的映射。您在程序术语中描述为“循环”中的“中断”实际上是说您希望映射在第一个属性值不等于1或100之前选择输入序列中的那些项。 / p>
最有效的解决方案可能是使用兄弟递归:
<xsl:template match="SamplePointSet">
<xsl:apply-templates select="SamplePoint[1]"/>
</xsl:template>
<xsl:template match="SamplePoint">
... some processing ...
<xsl:if test="@A = 1 or @A = 100">
<xsl:apply-templates select="following-sibling::SamplePoint[1]"/>
</xsl:if>
</xsl:template>