我有一个问题,需要从XML文件中提取一些数据。我仍然无法解决如何处理
第二个连接应该由
你有任何想法我犯了什么错误吗?感谢你的帮助。
XML:
ph:Element
的ph:Attribute
,如果有多个,则输出应该像(s_rel0 = 5, par_s_rel0 = 5)
而不是像(s_rel0 = 5)(par_s_rel0 = 5)
。也许可以用if-then语句来解决!?第二个连接应该由
flange_b
组成,而不是flange_a
。我找了好久却找不到错误。你有任何想法我犯了什么错误吗?感谢你的帮助。
XML:
<?xml version="1.0" encoding="UTF-8"?>
<ph:Graphs xmlns:ph="http://www.merge.something.com" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<ph:Graph name="mass_spring_mo">
<ph:Element id="0" type="Fixed">
<ph:Port id="1" type="port">
<ph:Attribute>
<ph:AttributeField name="type" value="string"/>
<ph:AttributeField name="name" value="type"/>
<ph:AttributeField name="value" value="flange"/>
</ph:Attribute>
</ph:Port>
</ph:Element>
<ph:Element id="2" type="Spring">
<ph:Attribute>
<ph:AttributeField name="type" value="int"/>
<ph:AttributeField name="name" value="s_rel0"/>
<ph:AttributeField name="value" value="5"/>
</ph:Attribute>
<ph:Attribute>
<ph:AttributeField name="type" value="int"/>
<ph:AttributeField name="name" value="par_s_rel0"/>
<ph:AttributeField name="value" value="5"/>
</ph:Attribute>
<ph:Port id="3" type="port">
<ph:Attribute>
<ph:AttributeField name="type" value="string"/>
<ph:AttributeField name="name" value="type"/>
<ph:AttributeField name="value" value="flange_a"/>
</ph:Attribute>
</ph:Port>
<ph:Port id="4" type="port">
<ph:Attribute>
<ph:AttributeField name="type" value="string"/>
<ph:AttributeField name="name" value="type"/>
<ph:AttributeField name="value" value="flange_b"/>
</ph:Attribute>
</ph:Port>
</ph:Element>
<ph:Element id="5" type="Mass">
<ph:Port id="6" type="port">
<ph:Attribute>
<ph:AttributeField name="type" value="string"/>
<ph:AttributeField name="name" value="type"/>
<ph:AttributeField name="value" value="flange_a"/>
</ph:Attribute>
</ph:Port>
</ph:Element>
<ph:Edge id="7" sourceid="1" targetid="3"/>
<ph:Edge id="8" sourceid="4" targetid="6"/>
</ph:Graph>
</ph:Graphs>
XSLT:
<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:ph="http://www.merge.something.com">
<xsl:output indent="yes" method="text"/>
<xsl:template match="/">
<xsl:apply-templates select="ph:Graphs/ph:Graph"/>
</xsl:template>
<xsl:template match="ph:Graph">
<xsl:text>model</xsl:text>
<xsl:value-of select="@name"/>
<xsl:text></xsl:text>
<xsl:apply-templates select="ph:Element"/>
<xsl:text>equation</xsl:text>
<xsl:apply-templates select="ph:Edge"/>
<xsl:text>end</xsl:text>
<xsl:value-of select="@name"/>
<xsl:text>;</xsl:text>
</xsl:template>
<xsl:template match="ph:Element">
<xsl:text> Components.</xsl:text>
<xsl:value-of select="@type"/>
<xsl:text > </xsl:text>
<xsl:value-of select="translate(@type, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz')"/>
<xsl:value-of select="@id"/>
<xsl:apply-templates select="ph:Attribute"/>
<xsl:text>;</xsl:text>
</xsl:template>
<xsl:template match="ph:Element/ph:Attribute">
<xsl:choose>
<xsl:when test="ph:AttributeField[@name = 'type' and @value='int']">
<xsl:text>(</xsl:text>
<xsl:value-of select="ph:AttributeField[@name = 'name']/@value"/>
<xsl:text> = </xsl:text>
<xsl:value-of select="ph:AttributeField[@name = 'value']/@value" />
<xsl:text>)</xsl:text>
</xsl:when>
<xsl:when test="ph:AttributeField[@name = 'type' and @value='string']">
<xsl:text>(</xsl:text>
<xsl:value-of select="ph:AttributeField[@name = 'name']/@value"/>
<xsl:text> = '</xsl:text>
<xsl:value-of select="ph:AttributeField[@name = 'value']/@value" />
<xsl:text>')</xsl:text>
</xsl:when>
</xsl:choose>
</xsl:template>
<xsl:template match="ph:Port/ph:Attribute">
<xsl:if test="ph:AttributeField/@value=type">
<xsl:apply-templates select="ph:AttributeField"/>
</xsl:if>
</xsl:template>
<xsl:template match="ph:AttributeField">
</xsl:template>
<xsl:template match="ph:Edge">
<xsl:variable name="sourceid" select="@sourceid"/>
<xsl:variable name="targetid" select="@targetid"/>
<xsl:variable name="SourceElement" select="//ph:Element[ph:Port[@id = $sourceid]]"/>
<xsl:variable name="TargetElement" select="//ph:Element[ph:Port[@id = $targetid]]"/>
<xsl:text> connect(</xsl:text>
<xsl:value-of select="translate($SourceElement/@type, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz')" />
<xsl:value-of select="$SourceElement/@id" />
<xsl:text>.</xsl:text>
<xsl:value-of select="$SourceElement/ph:Port/ph:Attribute/ph:AttributeField[@name = 'value']/@value" />
<xsl:text>,</xsl:text>
<xsl:value-of select="translate($TargetElement/@type, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz')" />
<xsl:value-of select="$TargetElement/@id" />
<xsl:text>.</xsl:text>
<xsl:value-of select="$TargetElement/ph:Port/ph:Attribute/ph:AttributeField[@name = 'value']/@value" />
<xsl:text >);</xsl:text>
</xsl:template>
</xsl:stylesheet>
期望的输出:
model mass_spring_mo
Components.Fixed fixed0;
Components.Spring spring2(s_rel0 = 5, par_s_rel0 = 5);
Components.Mass mass5;
equation
connect(fixed0.flange,spring2.flange_a);
connect(spring2.flange_b,mass5.flange_a);
end mass_spring_mo;