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我在組合多個密鑰以獲取更改的記錄時遇到問題。組合多個密鑰
我有2條XML記錄。文件1和文件2
目標是創建一個包含4個部分的表格。相同，更改，添加和刪除。
在兩個文檔中都有相同的rec_no，part_no，ext_qty的元素應該進入子部分Same。 在Document1中存在但不在Document2中的元素需要在Delete子部分下 在Document2中存在且不在Document1中的元素需要在Add部分下 在上述3個條件中不存在的元素應該在更改子部分中。例如， 這兩個文件中都有記錄，並且數量或零件編號或描述中有任何更改
現在我可以添加前3個部分而沒有任何問題，問題出現在第4個條件中。我無法將前三項條件組合起來得到這些條件的「不」。
這裏是我的評論輸出表。這裏記錄999有在刪除部分，它不應該在改款
----------------------------------------------------
Section PartNo RecNo Desc Doc-1 Qty Doc-2 Qty Total
----------------------------------------------------
Same 111 aaa Desc1 1 1 200
----------------------------------------------------
Same Total 100
----------------------------------------------------
Change 222 bbb Desc2 2 3 200
Change 333 ccc Desc3 3 3 200
Change 444 ddd Desc4 6 4 500
Change 999 ggg Desc9 2 0 100
----------------------------------------------------
Change Total 400
----------------------------------------------------
Add 666 ff Desc4 0 6 400
----------------------------------------------------
Add Total 0
----------------------------------------------------
Delete 999 ggg Desc9 2 0 100
----------------------------------------------------
Delete Total 0
----------------------------------------------------
Grand Total 500
----------------------------------------------------
來到這裏是我的XML
<?xml version="1.0" encoding="utf-8"?>
<?xml-stylesheet type="text/xsl" href="sample.xslt"?>
<Logia>
<DocHeader>
<Document>
<Downto>
<part_no>111</part_no>
<rec_no>aaa</rec_no>
<desc>Desc1</desc>
<ext_qty>1</ext_qty>
<mat_cost>100.00</mat_cost>
</Downto>
<Downto>
<part_no>222</part_no>
<rec_no>bbb</rec_no>
<desc>Desc2</desc>
<ext_qty>2</ext_qty>
<mat_cost>100.00</mat_cost>
</Downto>
<Downto>
<part_no>333</part_no>
<rec_no>ccc</rec_no>
<desc>Desc3</desc>
<ext_qty>3</ext_qty>
<mat_cost>100.00</mat_cost>
</Downto>
<Downto>
<part_no>444</part_no>
<rec_no>ddd</rec_no>
<desc>Desc4</desc>
<ext_qty>6</ext_qty>
<mat_cost>100.00</mat_cost>
</Downto>
<Downto>
<part_no>999</part_no>
<rec_no>ggg</rec_no>
<desc>Desc9</desc>
<ext_qty>2</ext_qty>
<mat_cost>100.00</mat_cost>
</Downto>
</Document>
<Document>
<Downto>
<part_no>111</part_no>
<rec_no>aaa</rec_no>
<desc>Desc1</desc>
<ext_qty>1</ext_qty>
<mat_cost>100.00</mat_cost>
</Downto>
<Downto>
<part_no>222</part_no>
<rec_no>bbb</rec_no>
<desc>Desc3</desc>
<ext_qty>3</ext_qty>
<mat_cost>100.00</mat_cost>
</Downto>
<Downto>
<part_no>333</part_no>
<rec_no>bbb</rec_no>
<desc>Desc3</desc>
<ext_qty>3</ext_qty>
<mat_cost>100.00</mat_cost>
</Downto>
<Downto>
<part_no>444</part_no>
<rec_no>ddd</rec_no>
<desc>Desc4</desc>
<ext_qty>4</ext_qty>
<mat_cost>400.00</mat_cost>
</Downto>
<Downto>
<part_no>666</part_no>
<rec_no>ff</rec_no>
<desc>Desc4</desc>
<ext_qty>6</ext_qty>
<mat_cost>400.00</mat_cost>
</Downto>
</Document>
</DocHeader>
</Logia>
和我的XSL是如下
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="html" omit-xml-declaration="yes" version="1.0" encoding="utf-8" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:key name="MAT1PARTKEY" match="Document[1]/Downto" use="part_no" />
<xsl:key name="MAT2PARTKEY" match="Document[2]/Downto" use="part_no" />
<xsl:key name="MATERIALBYPARTNO" match="Document/Downto" use="part_no" />
<xsl:key name="MATERIAL2BYKEY" match="Document[2]/Downto" use="concat(rec_no, '||', part_no, '||', ext_qty)" />
<xsl:key name="MATERIALKEY" match="Document[1]/Downto" use="concat(rec_no, '||', part_no, '||', ext_qty)" />
<xsl:template match="/Logia/DocHeader">
<table border="1">
<!-- header -->
<tr>
<th>Section</th>
<th>PartNo</th>
<th>RecNo</th>
<th>Desc</th>
<th>Doc-1 Qty</th>
<th>Doc-2 Qty</th>
<th>Total</th>
</tr>
<!-- same -->
<xsl:variable name="same" select="Document[1]/Downto[key('MATERIAL2BYKEY', concat(rec_no, '||', part_no, '||', ext_qty))]" />
<xsl:apply-templates select="$same">
<xsl:with-param name="section">Same</xsl:with-param>
</xsl:apply-templates>
<xsl:variable name="same-total" select="sum($same/mat_cost)" />
<tr>
<td colspan="6">Same Total</td>
<th><xsl:value-of select="$same-total"/></th>
</tr>
<!-- change -->
<xsl:variable name="change" select="Document[1]/Downto[not(key('MATERIAL2BYKEY', concat(rec_no, '||', part_no, '||', ext_qty)))]" />
<xsl:apply-templates select="$change">
<xsl:with-param name="section">Change</xsl:with-param>
</xsl:apply-templates>
<xsl:variable name="change-total" select="sum($change/mat_cost)" />
<tr>
<td colspan="6">Change Total</td>
<th><xsl:value-of select="$change-total"/></th>
</tr>
<!-- Add -->
<xsl:variable name="add" select="Document[2]/Downto[not(key('MAT1PARTKEY', part_no))]" />
<xsl:apply-templates select="$add">
<xsl:with-param name="section">Add</xsl:with-param>
</xsl:apply-templates>
<xsl:variable name="add-total" select="sum($add/Value)" />
<tr>
<td colspan="6">Add Total</td>
<th><xsl:value-of select="$add-total"/></th>
</tr>
<!-- delete -->
<xsl:variable name="delete" select="Document[1]/Downto[not(key('MAT2PARTKEY', part_no))]" />
<xsl:apply-templates select="$delete">
<xsl:with-param name="section">Delete</xsl:with-param>
</xsl:apply-templates>
<xsl:variable name="delete-total" select="sum($delete/Value)" />
<tr>
<td colspan="6">Delete Total</td>
<th><xsl:value-of select="$delete-total"/></th>
</tr>
<!-- grand total -->
<tr>
<th colspan="6">Grand Total</th>
<th><xsl:value-of select="$same-total + $change-total"/></th>
</tr>
</table>
</xsl:template>
<xsl:template match="Downto">
<xsl:param name="section"/>
<xsl:if test="generate-id() = generate-id(key('MATERIALBYPARTNO', part_no)[1])">
<tr>
<td><xsl:value-of select="$section"/></td>
<td><xsl:value-of select="part_no"/></td>
<td><xsl:value-of select="rec_no"/></td>
<td><xsl:value-of select="desc"/></td>
<td><xsl:value-of select="sum(key('MAT1PARTKEY', part_no)/ext_qty)"/></td>
<td><xsl:value-of select="sum(key('MAT2PARTKEY', part_no)/ext_qty)"/></td>
<td><xsl:value-of select="sum(key('MATERIALBYPARTNO', part_no)/mat_cost)"/></td>
</tr>
</xsl:if>
</xsl:template>
</xsl:stylesheet>
哇..我得到了我想要的。非常感謝Mark – user2822294 2014-12-04 12:04:45