XSLT 聚合使用排序和 Muenchian 方法进行最小值和最大值 [英] XSLT Aggregation using sort with Muenchian Method for min and max
本文介绍了XSLT 聚合使用排序和 Muenchian 方法进行最小值和最大值的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我在第一次阅读时就理解 Muenchian Method 索引整个文档.但是如何在分组之前或分组内进行排序而不是在其键上进行排序?具体来说，我如何订购键的同级以计算一系列元素值的最小值和最大值?
正如下面的 XML 数据所示，我正在尝试按行业汇总公司.在七个指标(收入、资产、股权、净收入、股价和员工)中，我可以实现各种聚合:使用 sum() 求和，使用 sum() div count()<求平均值/代码>.但是为了获得特别是净收入的最小值和最大值，我需要按净收入对行业内的公司进行排序并选择 position() 处的值.请注意，每个行业正好有五家公司.因此，对于净收入递减排序，position()=1 是最大值，position()=5 是最小值.
现在，我可以通过运行两个 XSLT 脚本来达到我想要的结果.第一个排序和第二个聚合.但是我怎样才能用one XSLT 做到这一点?在 Muenchian 键的 for each loop 中，我尝试了以下所有方法均无济于事.
<xsl:sort select="../netincome" data-type="number" order="descending"/>
<xsl:sort select="key('indkey', .)/../netincome" data-type="number" order="descending"/>
<xsl:sort select="key('indkey', .)[../netincome]" data-type="number" order="descending"/>
可能，最小值和最大值必须在其他模板之外完成，或者运行 XSLT 脚本的两个传递/调用模板或使用
XML 数据
XSLT 1
XSLT 2
<xsl:template match="数据"><数据><xsl:for-each select="bigcompany/industry[generate-id()= generate-id(key('indkey', .)[1])]"><xsl:sort select="."order="升序"/><聚合数据><xsl:copy-of select="."/><SumOfRevenue><xsl:copy-of select="sum(key('indkey', .)/../revenue)"/></SumOfRevenue><AvgOfAssets><xsl:copy-of select="sum(key('indkey', .)/../assets) div 计数(key('indkey', .)/../assets)"/></AvgOfAssets><AvgOfEquity><xsl:copy-of select="sum(key('indkey', .)/../equity) div count(key('indkey', .)/../equity)"/></AvgOfEquity><MaxOfIncome><xsl:value-of select="key('indkey', .)[1]/../netincome"/></MaxOfIncome><MinOfIncome><xsl:value-of select="key('indkey', .)[5]/../netincome"/></MinOfIncome><AvgOfStockPrice><xsl:copy-of select="sum(key('indkey', .)/../stockprice) div count(key('indkey', .)/../stockprice)"/>;</AvgOfStockPrice><SumOfEmployees><xsl:copy-of select="sum(key('indkey', .)/../employees)"/></SumOfEmployees></xsl:for-each></数据></xsl:模板></xsl:stylesheet>最终和期望的结果 -但是如何使用一个 XSLT?
<聚合数据><工业>石油&天然气</工业><SumOfRevenue>7.6821e+011</SumOfRevenue><AvgOfAssets>1.535778e+011</AvgOfAssets><AvgOfEquity>8.12524e+010</AvgOfEquity><MaxOfIncome>32520000000</MaxOfIncome><MinOfIncome>2700000000</MinOfIncome><AvgOfStockPrice>68.138</AvgOfStockPrice><SumOfEmployees>224240</SumOfEmployees><聚合数据><行业>制药</行业><SumOfRevenue>2.10975e+011</SumOfRevenue><AvgOfAssets>9.49038e+010</AvgOfAssets><AvgOfEquity>4.6162e+010</AvgOfEquity><MaxOfIncome>16323000000</MaxOfIncome><MinOfIncome>2004000000</MinOfIncome><AvgOfStockPrice>62.616</AvgOfStockPrice><SumOfEmployees>346425</SumOfEmployees></数据> 解决方案
这种方式怎么样?
XSLT 1.0
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/><xsl:strip-space elements="*"/><xsl:key name="co-by-ind" match="bigcompany" use="industry"/><xsl:template match="/data"><xsl:copy><xsl:for-each select="bigcompany[generate-id() = generate-id(key('co-by-ind',industry)[1])]"><xsl:sort select="industry" data-type="text" order="ascending"/><!-- 变量--><xsl:variable name="curr-group" select="key('co-by-ind',industry)"/><xsl:variable name="收入排序"><xsl:for-each select="$curr-group"><xsl:sort select="netincome" data-type="number" order="ascending"/><xsl:copy-of select="netincome"/></xsl:for-each></xsl:变量><xsl:variable name="income-sorted-set" select="exsl:node-set($income-sorted)/netincome"/><!-- 输出--><聚合数据><xsl:copy-of select="industry"/><收入总和><xsl:value-of select="sum($curr-group/revenue)"/></SumOfRevenue><AvgOfAssets><xsl:value-of select="sum($curr-group/assets) div count($curr-group/assets)"/></AvgOfAssets><AvgOfEquity><xsl:value-of select="sum($curr-group/equity) div count($curr-group/equity)"/></AvgOfEquity><收入上限><xsl:value-of select="$income-sorted-set[last()]"/></MaxOfIncome><MinOfIncome><xsl:value-of select="$income-sorted-set[1]"/></MinOfIncome><AvgOfStockPrice><xsl:value-of select="sum($curr-group/stockprice) div count($curr-group/stockprice)"/></AvgOfStockPrice><员工总数><xsl:value-of select="sum($curr-group/employees)"/></SumOfEmployees></xsl:for-each></xsl:copy></xsl:模板></xsl:stylesheet> I understand the Muenchian Method indexes the entire document at first read. But how can one sort prior or within grouping but not on its key? Specifically, how can I order a sibling of the key in order to calculate min and max of a series of element values?
As XML data shows below, I am attempting to aggregate Companies by Industry. Across the seven metrics (revenue, assets, equity, netincome, stockprice, and employees) I can achieve various aggregates: sum with sum() and average with sum() div count(). But in order to obtain min and max particularly for netincome, I need to sort companies within industry by netincome and select the value at a position(). Do note, there are exactly five companies per industry. So for decreasing netincome sort, position()=1 is the maximum and position()=5 would be minimum.
Now, I can achieve my desired results running two XSLT scripts. The first sorts and second aggregates. But how can I do so with one XSLT? Within for each loop of Muenchian key I tried the below all to no avail.
<xsl:sort select="../netincome" data-type="number" order="descending"/>
<xsl:sort select="key('indkey', .)/../netincome" data-type="number" order="descending"/>
<xsl:sort select="key('indkey', .)[../netincome]" data-type="number" order="descending"/>
Possibly, the min and max must be done in a template outside the others or run two passes/call templates of the XSLT scripts or using <xsl:with-params>.
XML data
<?xml version="1.0" encoding="UTF-8"?>
<data>
<bigcompany>
<company>Company OA</company>
<industry>Oil & Gas</industry>
<revenue>394105000000</revenue>
<assets>349493000000</assets>
<equity>174399000000</equity>
<netincome>32520000000</netincome>
<stockprice>89.38</stockprice>
<employees>75300</employees>
</bigcompany>
<bigcompany>
<company>Company OB</company>
<industry>Oil & Gas</industry>
<revenue>200494000000</revenue>
<assets>266026000000</assets>
<equity>156191000000</equity>
<netincome>19241000000</netincome>
<stockprice>108.62</stockprice>
<employees>64700</employees>
</bigcompany>
<bigcompany>
<company>Company OC</company>
<industry>Oil & Gas</industry>
<revenue>13807000000</revenue>
<assets>4726000000</assets>
<equity>16445000000</equity>
<netincome>2720000000</netincome>
<stockprice>48.5</stockprice>
<employees>22000</employees>
</bigcompany>
<bigcompany>
<company>Company OD</company>
<industry>Oil & Gas</industry>
<revenue>97800000000</revenue>
<assets>30500000000</assets>
<equity>10800000000</equity>
<netincome>2700000000</netincome>
<stockprice>27.53</stockprice>
<employees>45340</employees>
</bigcompany>
<bigcompany>
<company>Company OE</company>
<industry>Oil & Gas</industry>
<revenue>62004000000</revenue>
<assets>117144000000</assets>
<equity>48427000000</equity>
<netincome>8428000000</netincome>
<stockprice>66.66</stockprice>
<employees>16900</employees>
</bigcompany>
<bigcompany>
<company>Company PA</company>
<industry>Pharmaceuticals</industry>
<revenue>49605000000</revenue>
<assets>169274000000</assets>
<equity>71622000000</equity>
<netincome>9135000000</netincome>
<stockprice>30.14</stockprice>
<employees>78000</employees>
</bigcompany>
<bigcompany>
<company>Company PB</company>
<industry>Pharmaceuticals</industry>
<revenue>48047000000</revenue>
<assets>105128000000</assets>
<equity>56943000000</equity>
<netincome>6272000000</netincome>
<stockprice>55.43</stockprice>
<employees>76000</employees>
</bigcompany>
<bigcompany>
<company>Company PC</company>
<industry>Pharmaceuticals</industry>
<revenue>74331000000</revenue>
<assets>131119000000</assets>
<equity>69752000000</equity>
<netincome>16323000000</netincome>
<stockprice>102.31</stockprice>
<employees>126500</employees>
</bigcompany>
<bigcompany>
<company>Company PD</company>
<industry>Pharmaceuticals</industry>
<revenue>23113000000</revenue>
<assets>35249000000</assets>
<equity>17641000000</equity>
<netincome>4685000000</netincome>
<stockprice>67.2</stockprice>
<employees>37925</employees>
</bigcompany>
<bigcompany>
<company>Company PE</company>
<industry>Pharmaceuticals</industry>
<revenue>15879000000</revenue>
<assets>33749000000</assets>
<equity>14852000000</equity>
<netincome>2004000000</netincome>
<stockprice>58</stockprice>
<employees>28000</employees>
</bigcompany>
<bigcompany>
<company>Company MA</company>
<industry>Media</industry>
<revenue>48813000000</revenue>
<assets>84186000000</assets>
<equity>44958000000</equity>
<netincome>8004000000</netincome>
<stockprice>93.65</stockprice>
<employees>180000</employees>
</bigcompany>
<bigcompany>
<company>Company MB</company>
<industry>Media</industry>
<revenue>64657000000</revenue>
<assets>158813000000</assets>
<equity>51058000000</equity>
<netincome>7135000000</netincome>
<stockprice>57.05</stockprice>
<employees>139000</employees>
</bigcompany>
<bigcompany>
<company>Company MC</company>
<industry>Media</industry>
<revenue>31867000000</revenue>
<assets>54793000000</assets>
<equity>17418000000</equity>
<netincome>4514000000</netincome>
<stockprice>36.52</stockprice>
<employees>27000</employees>
</bigcompany>
<bigcompany>
<company>TCompany MD</company>
<industry>Media</industry>
<revenue>29795000000</revenue>
<assets>67994000000</assets>
<equity>29904000000</equity>
<netincome>3691000000</netincome>
<stockprice>84.3</stockprice>
<employees>26000</employees>
</bigcompany>
<bigcompany>
<company>Company ME</company>
<industry>Media</industry>
<revenue>15284000000</revenue>
<assets>26387000000</assets>
<equity>9966000000</equity>
<netincome>1879000000</netincome>
<stockprice>54.88</stockprice>
<employees>20915</employees>
</bigcompany>
</data>
XSLT 1
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output omit-xml-declaration="yes" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:template match="data">
<xsl:copy>
<xsl:apply-templates>
<xsl:sort select="industry" order="ascending"/>
<xsl:sort select="netincome" data-type="number" order="descending"/>
</xsl:apply-templates>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
XSLT 2
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output omit-xml-declaration="yes" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:key name="indkey" match="bigcompany/industry" use="."/>
<xsl:template match="data">
<data>
<xsl:for-each select="bigcompany/industry[generate-id()
= generate-id(key('indkey', .)[1])]">
<xsl:sort select="." order="ascending"/>
<aggdata>
<xsl:copy-of select="."/>
<SumOfRevenue><xsl:copy-of select="sum(key('indkey', .)/../revenue)"/></SumOfRevenue>
<AvgOfAssets><xsl:copy-of select="sum(key('indkey', .)/../assets) div count(key('indkey', .)/../assets)"/></AvgOfAssets>
<AvgOfEquity><xsl:copy-of select="sum(key('indkey', .)/../equity) div count(key('indkey', .)/../equity)"/></AvgOfEquity>
<MaxOfIncome><xsl:value-of select="key('indkey', .)[1]/../netincome"/></MaxOfIncome>
<MinOfIncome><xsl:value-of select="key('indkey', .)[5]/../netincome"/></MinOfIncome>
<AvgOfStockPrice><xsl:copy-of select="sum(key('indkey', .)/../stockprice) div count(key('indkey', .)/../stockprice)"/></AvgOfStockPrice>
<SumOfEmployees><xsl:copy-of select="sum(key('indkey', .)/../employees)"/></SumOfEmployees>
</aggdata>
</xsl:for-each>
</data>
</xsl:template>
</xsl:stylesheet>
Final and Desired results - but how with one XSLT?
<?xml version='1.0' encoding='UTF-8'?>
<data>
<aggdata>
<industry>Media</industry>
<SumOfRevenue>1.90416e+011</SumOfRevenue>
<AvgOfAssets>7.84346e+010</AvgOfAssets>
<AvgOfEquity>3.06608e+010</AvgOfEquity>
<MaxOfIncome>8004000000</MaxOfIncome>
<MinOfIncome>1879000000</MinOfIncome>
<AvgOfStockPrice>65.28</AvgOfStockPrice>
<SumOfEmployees>392915</SumOfEmployees>
</aggdata>
<aggdata>
<industry>Oil & Gas</industry>
<SumOfRevenue>7.6821e+011</SumOfRevenue>
<AvgOfAssets>1.535778e+011</AvgOfAssets>
<AvgOfEquity>8.12524e+010</AvgOfEquity>
<MaxOfIncome>32520000000</MaxOfIncome>
<MinOfIncome>2700000000</MinOfIncome>
<AvgOfStockPrice>68.138</AvgOfStockPrice>
<SumOfEmployees>224240</SumOfEmployees>
</aggdata>
<aggdata>
<industry>Pharmaceuticals</industry>
<SumOfRevenue>2.10975e+011</SumOfRevenue>
<AvgOfAssets>9.49038e+010</AvgOfAssets>
<AvgOfEquity>4.6162e+010</AvgOfEquity>
<MaxOfIncome>16323000000</MaxOfIncome>
<MinOfIncome>2004000000</MinOfIncome>
<AvgOfStockPrice>62.616</AvgOfStockPrice>
<SumOfEmployees>346425</SumOfEmployees>
</aggdata>
</data>
解决方案
How about this way?
XSLT 1.0
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:exsl="http://exslt.org/common"
extension-element-prefixes="exsl">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:key name="co-by-ind" match="bigcompany" use="industry" />
<xsl:template match="/data">
<xsl:copy>
<xsl:for-each select="bigcompany[generate-id() = generate-id(key('co-by-ind', industry)[1])]">
<xsl:sort select="industry" data-type="text" order="ascending"/>
<!-- variables -->
<xsl:variable name="curr-group" select="key('co-by-ind', industry)" />
<xsl:variable name="income-sorted">
<xsl:for-each select="$curr-group">
<xsl:sort select="netincome" data-type="number" order="ascending"/>
<xsl:copy-of select="netincome"/>
</xsl:for-each>
</xsl:variable>
<xsl:variable name="income-sorted-set" select="exsl:node-set($income-sorted)/netincome" />
<!-- output -->
<aggdata>
<xsl:copy-of select="industry"/>
<SumOfRevenue>
<xsl:value-of select="sum($curr-group/revenue)"/>
</SumOfRevenue>
<AvgOfAssets>
<xsl:value-of select="sum($curr-group/assets) div count($curr-group/assets)"/>
</AvgOfAssets>
<AvgOfEquity>
<xsl:value-of select="sum($curr-group/equity) div count($curr-group/equity)"/>
</AvgOfEquity>
<MaxOfIncome>
<xsl:value-of select="$income-sorted-set[last()]"/>
</MaxOfIncome>
<MinOfIncome>
<xsl:value-of select="$income-sorted-set[1]"/>
</MinOfIncome>
<AvgOfStockPrice>
<xsl:value-of select="sum($curr-group/stockprice) div count($curr-group/stockprice)"/>
</AvgOfStockPrice>
<SumOfEmployees>
<xsl:value-of select="sum($curr-group/employees)"/>
</SumOfEmployees>
</aggdata>
</xsl:for-each>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
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