XSLT版本: 1.0
数据(如何“呈现”):
数据(如何以XML格式存储):
<data>
<item>
<row>Row1</row>
<col>Col2</col>
<value>323</value>
</item>
<item>
<row>Row2</row>
<col>Col1</col>
<value>12</value>
</item>
<item>
<row>Row2</row>
<col>Col2</col>
<value>53</value>
</item>
</data>
请注意XML数据中完全缺少空“单元格”(Row1/Col1
)。
我需要的是什么:
我需要填写“结构”的其余部分,以便空的“单元格”在XML中具有相应的空元素:
<data>
<!-- New, "empty" item gets created -->
<item>
<row>Row1</row>
<col>Col1</col>
<value />
</item>
<!-- Output the others as before -->
<item>
<row>Row1</row>
<col>Col2</col>
<value>323</value>
</item>
<item>
<row>Row2</row>
<col>Col1</col>
<value>12</value>
</item>
<item>
<row>Row2</row>
<col>Col2</col>
<value>53</value>
</item>
</data>
The Catch:
此示例数据远远小于我的目标数据集。真实数据可能有数百个行和列,空白的“单元格”遍布整个地方。因此,我不能硬编码。
我的“解决方案”迄今为止:
我考虑过使用Muenchian Grouping来挑选所有唯一的列和行名称;然后,有了这些,我会遍历每个组合(Row1/Col1
,Row2/Col2
等),并检查源文档中是否存在<item>
元素和这些值。如果我找到一个,我会复制它(及其后代);我不应该找到一个,我输出适当的“空”元素。
这听起来对我来说太过程序化(这样我甚至很难创建XSLT文档)。必须有更好的方法。
我感谢你能给出的任何指示。 :)
更新
不幸的是,解决方案不能指望其值中包含连续数字的行和列;它们只是以这种方式呈现,以便于演示。例如,代替"Row2"
,该行的第一列的值也可能是"Peanut Butter and Jelly"
。
<item>
元素按顺序排列在源XML中:从左到右(按列),从上到下(按行)。
答案 0 :(得分:2)
这是一个样式表,可以按照你提出的方式做一些事情,但请注意,创建表的顺序取决于输入,可能会根据缺少的数据进行更改。
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:exsl="http://exslt.org/common"
exclude-result-prefixes="xs exsl"
version="1.0">
<xsl:strip-space elements="*"/>
<xsl:output indent="yes"/>
<xsl:variable name="doc" select="/"/>
<xsl:key name="rows" match="row" use="."/>
<xsl:variable name="rows">
<xsl:for-each select="//row[generate-id() = generate-id(key('rows', .)[1])]">
<xsl:copy-of select="."/>
</xsl:for-each>
</xsl:variable>
<xsl:key name="cols" match="col" use="."/>
<xsl:variable name="cols">
<xsl:for-each select="//col[generate-id() = generate-id(key('cols', .)[1])]">
<xsl:copy-of select="."/>
</xsl:for-each>
</xsl:variable>
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:key name="by.rowcol" match="item" use="concat(row,col)"/>
<xsl:template match="data">
<xsl:copy>
<xsl:for-each select="exsl:node-set($rows)/row">
<xsl:variable name="row" select="."/>
<xsl:for-each select="exsl:node-set($cols)/col">
<xsl:variable name="col" select="."/>
<xsl:for-each select="$doc">
<xsl:choose>
<xsl:when test="key('by.rowcol',concat($row,$col))">
<xsl:copy-of select="key('by.rowcol',concat($row,$col))"/>
</xsl:when>
<xsl:otherwise>
<item>
<xsl:copy-of select="$row"/>
<xsl:copy-of select="$col"/>
<value/>
</item>
</xsl:otherwise>
</xsl:choose>
</xsl:for-each>
</xsl:for-each>
</xsl:for-each>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
或者,这是一个样式表,如果row和col值是数字的话,它会按顺序迭代元素来做你想要的:
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
exclude-result-prefixes="xs"
version="1.0">
<xsl:strip-space elements="*"/>
<xsl:output indent="yes"/>
<!-- Figure out how wide the table is -->
<xsl:variable name="max.col">
<xsl:for-each select="//col">
<xsl:sort select="substring-after(.,'Col')" data-type="number" order="descending"/>
<xsl:if test="position() = 1">
<xsl:value-of select="substring-after(.,'Col')"/>
</xsl:if>
</xsl:for-each>
</xsl:variable>
<!-- The identity template -->
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="data">
<xsl:copy>
<!-- Start off processing the first time in the first row -->
<xsl:apply-templates select="item[row = 'Row1'][1]">
<!-- We expect the coordinates to be (1,1) -->
<xsl:with-param name="expected.row" select="1"/>
<xsl:with-param name="expected.col" select="1"/>
</xsl:apply-templates>
</xsl:copy>
</xsl:template>
<xsl:template match="item">
<xsl:param name="expected.row"/>
<xsl:param name="expected.col"/>
<!-- Figure out what coordinates this item is at -->
<xsl:variable name="row" select="substring-after(row,'Row')"/>
<xsl:variable name="col" select="substring-after(col,'Col')"/>
<!-- Check to see if we're the last item in the row -->
<xsl:variable name="is.last-in-row" select="not(following-sibling::item[row = current()/row])"/>
<!-- Check to see if we skipped any rows -->
<xsl:if test="$row > $expected.row">
<!-- Call a template to recursively create the skipped rows of item -->
<xsl:call-template name="fill.row">
<xsl:with-param name="row" select="$expected.row"/>
<xsl:with-param name="stop.row" select="$row - 1"/>
</xsl:call-template>
</xsl:if>
<!-- We're further along than we expected that means some item were missed -->
<xsl:if test="$col > $expected.col">
<!-- Call a template to recursively create the skipped item -->
<xsl:call-template name="fill.col">
<xsl:with-param name="row" select="$row"/>
<xsl:with-param name="col" select="$expected.col"/>
<xsl:with-param name="stop.col" select="$col - 1"/>
</xsl:call-template>
</xsl:if>
<!-- Copy the item we're on -->
<xsl:copy-of select="."/>
<!-- If this is the last item on the row and there are missing items create them -->
<xsl:if test="$is.last-in-row and $max.col > $col">
<xsl:call-template name="fill.col">
<xsl:with-param name="row" select="$row"/>
<xsl:with-param name="col" select="$col + 1"/>
<xsl:with-param name="stop.col" select="$max.col"/>
</xsl:call-template>
</xsl:if>
<!-- Move on to the next item -->
<xsl:choose>
<xsl:when test="$is.last-in-row">
<!-- If we're the last in row, increase our expected row and reset the expected.col -->
<xsl:apply-templates select="following-sibling::item[1]">
<xsl:with-param name="expected.row" select="$expected.row + 1"/>
<xsl:with-param name="expected.col" select="1"/>
</xsl:apply-templates>
</xsl:when>
<xsl:otherwise>
<!-- Increment our expected col and keep expected row the same -->
<xsl:apply-templates select="following-sibling::item[1]">
<xsl:with-param name="expected.row" select="$expected.row"/>
<xsl:with-param name="expected.col" select="$expected.col + 1"/>
</xsl:apply-templates>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<!-- Recursively create item elements with the given $row for all the cols from $col to $stop.col inclusive -->
<xsl:template name="fill.col">
<xsl:param name="row"/>
<xsl:param name="col"/>
<xsl:param name="stop.col"/>
<xsl:if test="$stop.col >= $col">
<item>
<row><xsl:value-of select="concat('Row',$row)"/></row>
<col><xsl:value-of select="concat('Col',$col)"/></col>
<value/>
</item>
<xsl:call-template name="fill.col">
<xsl:with-param name="row" select="$row"/>
<xsl:with-param name="col" select="$col + 1"/>
<xsl:with-param name="stop.col" select="$stop.col"/>
</xsl:call-template>
</xsl:if>
</xsl:template>
<!-- Recursively create $max.col length rows of item elements from $row to $stop.row inclusive -->
<xsl:template name="fill.row">
<xsl:param name="row"/>
<xsl:param name="stop.row"/>
<xsl:if test="$stop.row >= $row">
<xsl:call-template name="fill.col">
<xsl:with-param name="row" select="$row"/>
<xsl:with-param name="col" select="1"/>
<xsl:with-param name="stop.col" select="$max.col"/>
</xsl:call-template>
<xsl:call-template name="fill.row">
<xsl:with-param name="row" select="$row + 1"/>
<xsl:with-param name="stop.row" select="$stop.row"/>
</xsl:call-template>
</xsl:if>
</xsl:template>
</xsl:stylesheet>
答案 1 :(得分:1)
我的方法是......
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:so="http://stackoverflow.com/questions/13575269"
xmlns:exsl="http://exslt.org/common"
exclude-result-prefixes="xsl so exsl">
<xsl:output indent="yes" omit-xml-declaration="yes" />
<xsl:strip-space elements="*" />
<xsl:variable name="rank-and-file">
<xsl:apply-templates select="/*" mode="counting" />
</xsl:variable>
<xsl:variable name="col-count">
<xsl:for-each select="exsl:node-set($rank-and-file)/so:col">
<xsl:sort select="." data-type="number" order="descending" />
<xsl:if test="position() = 1">
<xsl:value-of select="."/>
</xsl:if>
</xsl:for-each>
</xsl:variable>
<xsl:variable name="row-count">
<xsl:for-each select="exsl:node-set($rank-and-file)/so:row">
<xsl:sort select="." data-type="number" order="descending" />
<xsl:if test="position() = 1">
<xsl:value-of select="."/>
</xsl:if>
</xsl:for-each>
</xsl:variable>
<xsl:template match="*" mode="counting">
<xsl:apply-templates mode="counting" />
</xsl:template>
<xsl:template match="row" mode="counting">
<so:row>
<xsl:value-of select="substring(.,4)" />
</so:row>
</xsl:template>
<xsl:template match="col" mode="counting">
<so:col>
<xsl:value-of select="substring(.,4)" />
</so:col>
</xsl:template>
<xsl:template match="/*">
<xsl:variable name="data" select="." />
<xsl:copy>
<xsl:for-each select="(((/)//*)/node())[position() <= $row-count]">
<xsl:variable name="row" select="position()" />
<xsl:for-each select="(((/)//*)/node())[position() <= $col-count]">
<xsl:variable name="col" select="position()" />
<xsl:variable name="cell" select="$data/item[row=concat('Row',$row)]
[col=concat('Col',$col)]" />
<xsl:copy-of select="$cell" />
<xsl:if test="not( $cell)">
<item>
<row><xsl:value-of select="concat('Row',$row)" /></row>
<col><xsl:value-of select="concat('Col',$row)" /></col>
<value/>
</item>
</xsl:if>
</xsl:for-each>
</xsl:for-each>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
如果您有超稀疏的输入文档并且Piez限制成为一个问题,那么这是一个更安全(但更慢)的替代方案。
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:so="http://stackoverflow.com/questions/13575269"
xmlns:exsl="http://exslt.org/common"
exclude-result-prefixes="xsl so exsl">
<xsl:output indent="yes" omit-xml-declaration="yes" />
<xsl:strip-space elements="*" />
<xsl:variable name="rank-and-file">
<xsl:apply-templates select="/*" mode="counting" />
</xsl:variable>
<xsl:variable name="col-count">
<xsl:for-each select="exsl:node-set($rank-and-file)/so:col">
<xsl:sort select="." data-type="number" order="descending" />
<xsl:if test="position() = 1">
<xsl:value-of select="."/>
</xsl:if>
</xsl:for-each>
</xsl:variable>
<xsl:variable name="row-count">
<xsl:for-each select="exsl:node-set($rank-and-file)/so:row">
<xsl:sort select="." data-type="number" order="descending" />
<xsl:if test="position() = 1">
<xsl:value-of select="."/>
</xsl:if>
</xsl:for-each>
</xsl:variable>
<xsl:template match="*" mode="counting">
<xsl:apply-templates mode="counting" />
</xsl:template>
<xsl:template match="row" mode="counting">
<so:row>
<xsl:value-of select="substring(.,4)" />
</so:row>
</xsl:template>
<xsl:template match="col" mode="counting">
<so:col>
<xsl:value-of select="substring(.,4)" />
</so:col>
</xsl:template>
<xsl:template name="make-counters">
<xsl:param name="count" />
<so:_/><so:_/><so:_/><so:_/><so:_/><so:_/><so:_/><so:_/>
<xsl:if test="$count > 8">
<xsl:call-template name="make-counters">
<xsl:with-param name="count" select="$count - 4" />
</xsl:call-template>
</xsl:if>
</xsl:template>
<xsl:variable name="counters-doc">
<xsl:call-template name="make-counters">
<xsl:with-param name="count" select="$col-count + $row-count" />
</xsl:call-template>
</xsl:variable>
<xsl:variable name="counters" select="exsl:node-set($counters-doc)/*" />
<xsl:template match="/*">
<xsl:variable name="data" select="." />
<xsl:copy>
<xsl:for-each select="$counters[position() <= $row-count]">
<xsl:variable name="row" select="position()" />
<xsl:for-each select="$counters[position() <= $col-count]">
<xsl:variable name="col" select="position()" />
<xsl:variable name="cell" select="$data/item[row=concat('Row',$row)]
[col=concat('Col',$col)]" />
<xsl:copy-of select="$cell" />
<xsl:if test="not( $cell)">
<item>
<row><xsl:value-of select="concat('Row',$row)" /></row>
<col><xsl:value-of select="concat('Col',$row)" /></col>
<value/>
</item>
</xsl:if>
</xsl:for-each>
</xsl:for-each>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>