我想使用一个计数器来增加和减少XSLT中的值。我可以使用Apache Xalan来实现这一点,但是现在我想使用Saxon来实现相同的目的。
我的Xalan XSLT脚本如下所示:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:lxslt="http://xml.apache.org/xslt"
xmlns:result="http://www.example.com/results"
extension-element-prefixes="result">
<lxslt:component prefix="result" functions="incr dcr">
<lxslt:script lang="javascript">
var count = 0;
function incr() {
count++;
return count;
}
function dcr() {
count--;
return count;
}
</lxslt:script>
</lxslt:component>
<xsl:template match="/">
a)<xsl:value-of select="result:incr()"/>
b)<xsl:value-of select="result:incr()"/>
c)<xsl:value-of select="result:dcr()"/>
</xsl:template>
</xsl:stylesheet>
预期输出为:
a)1
b)2
c)1
------------------------- my use case using saxon -------------------
This is my sample data.xml file. I want to transform this to html file.
<entity>
<record>10</record>
<record>15</record>
<record>19</record>
<record>7</record>
<record>4</record>
<record>14</record>
<record>24</record>
<entity>
I want to implement a counter for line-number and want to increment the counter and print the line-number
my expected outputs:
case 1: If record values > 14, then my output should have line-number with value as.
line-num value
1 15
2 19
3 24
case 2 : If record values < 14, then my output should have line-number with value as.
line-num value
1 10
2 7
3 4
My other use case :
<entity>
<record>10</record>
<record>15</record>
<record>19</record>
<record>7</record>
<record>20</record>
<record>14</record>
<record>24</record>
<entity>
<record>30</record>
<record>3</record>
</entity>
</entity>
<entity>
<record>5</record>
<record>17</record>
<record>19</record>
<record>6</record>
<record>70</record>
<record>9</record>
<record>35</record>
<entity>
<record>15</record>
<record>2</record>
</entity>
</entity>
This is my other use case, first <entity> record value > 15 and in second <entity> record value < 10, and my <entity> can grow bigger where i have to show only some record based on condition.
line-num value
1 19
2 20
3 24
4 30
5 5
6 6
7 2
据我所知,没有办法在撒克逊人中使用Javascript。
如果要在Saxon 9(EE或PE)中使用可分配和可变的变量,则可以使用
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:saxon="http://saxon.sf.net/"
xmlns:mf="http://example.com/mf"
extension-element-prefixes="saxon"
exclude-result-prefixes="xs saxon mf"
version="2.0">
<xsl:variable name="counter" as="xs:integer" select="0" saxon:assignable="yes"/>
<xsl:function name="mf:incr" as="xs:integer">
<saxon:assign name="counter" select="$counter + 1"/>
<xsl:sequence select="$counter"/>
</xsl:function>
<xsl:function name="mf:decr" as="xs:integer">
<saxon:assign name="counter" select="$counter - 1"/>
<xsl:sequence select="$counter"/>
</xsl:function>
<xsl:template match="/" name="main">
a)<xsl:value-of select="mf:incr()"/>
b)<xsl:value-of select="mf:incr()"/>
c)<xsl:value-of select="mf:decr()"/>
</xsl:template>
</xsl:stylesheet>
有关尝试引入副作用的信息,请参见http://saxonica.com/html/documentation/extensions/instructions/assign.html中的警告和说明。您可能希望编辑问题以解释您的XML输入和所需的输出,以及为什么您认为需要这样的计数器变量,希望我们可以再显示一个纯XSLT 2.0解决方案,而不是使用可分配的变量。
至于您对某些输入元素进行处理和编号的要求,样式表
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
exclude-result-prefixes="xs"
version="2.0">
<xsl:output indent="yes"/>
<xsl:template match="entity">
<root>
<xsl:apply-templates select="record[. > 14]"/>
<xsl:apply-templates select="record[. < 14]"/>
</root>
</xsl:template>
<xsl:template match="record">
<xsl:copy>
<line-num>
<xsl:value-of select="position()"/>
</line-num>
<value>
<xsl:value-of select="."/>
</value>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
当针对输入运行时
<entity>
<record>10</record>
<record>15</record>
<record>19</record>
<record>7</record>
<record>4</record>
<record>14</record>
<record>24</record>
</entity>
输出
<root>
<record>
<line-num>1</line-num>
<value>15</value>
</record>
<record>
<line-num>2</line-num>
<value>19</value>
</record>
<record>
<line-num>3</line-num>
<value>24</value>
</record>
<record>
<line-num>1</line-num>
<value>10</value>
</record>
<record>
<line-num>2</line-num>
<value>7</value>
</record>
<record>
<line-num>3</line-num>
<value>4</value>
</record>
</root>
其他选项使用例如xsl:number count="entity[. < 14]"
。
至于您的最新要求,我认为position()
只要选择要处理的元素(例如样式表),您仍然可以使用来处理
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="2.0">
<xsl:output method="text"/>
<xsl:template match="/">
<xsl:apply-templates select="/root/entity[1]//record[. > 15], /root/entity[2]//record[. < 10]"/>
</xsl:template>
<xsl:template match="record">
<xsl:value-of select="concat(position(), ' ', ., ' ')"/>
</xsl:template>
</xsl:stylesheet>
当应用于输入时
<root>
<entity>
<record>10</record>
<record>15</record>
<record>19</record>
<record>7</record>
<record>20</record>
<record>14</record>
<record>24</record>
<entity>
<record>30</record>
<record>3</record>
</entity>
</entity>
<entity>
<record>5</record>
<record>17</record>
<record>19</record>
<record>6</record>
<record>70</record>
<record>9</record>
<record>35</record>
<entity>
<record>15</record>
<record>2</record>
</entity>
</entity>
</root>
输出(使用像Saxon 9这样的XSLT 2.0处理器)
1 19
2 20
3 24
4 30
5 5
6 6
7 9
8 2
本文收集自互联网,转载请注明来源。
如有侵权,请联系 [email protected] 删除。
我来说两句