[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Re: Cosmetic sorting
Dimitre Novatchev <dnovatchev@xxxxxxxxx> kirjoitti:
On 12/29/06, Harry Liljestrom <harry.liljestrom@xxxxxxxxxxxxx> wrote: > Hi, > > I have following input XML structure, this is simplified: > > <policy-rules> > <fw-rule-order> > fwrule3 > fwrule1 > fwrule2 > </fw-rule-order> > <fw-rules> > <rule name="fwrule1"> > <direction>out</direction> > <action>pass<action> > <remote>192.168.129.31</remote> > <local>192.168.129.67</local> > </rule> > <rule name="fwrule2"> > <direction>in</direction> > <action>drop<action> > <remote>192.168.129.32</remote> > <local>192.168.129.67</local> > </rule> > <rule name="fwrule3"> > <direction>out</direction> > <action>pass<action> > <remote>192.168.129.33</remote> > <local>192.168.129.67</local> > </rule> > </fw-rules> > </policy-rules> > > XML transformation in XSLT 1.0 > <!-- Global variables --> > <xsl:variable name="rule-order"> > <xsl:value-of select="normalize-space(/policy-rules/fw-rule-order)"/> > </xsl:variable> > > <xsl:template match="/"> > <policy> > <xsl:apply-templates select="//fw-rules/rule"/> > </policy> > </xsl:template> > > <xsl:template match="//fw-rules/rule"> > <xsl:variable name="precedence"> > <xsl:call-template name="determineprecedence"> > <xsl:with-param name="string" select="$rule-order"/> > <xsl:with-param name="value" select="@name"/> > </xsl:call-template> > </xsl:variable> > <rule type="{action}" precedence="{$precedence}">}"> > <xsl:choose> > <xsl:when test="direction='in'"> > <src> > <xsl:apply-templates select="remote"/> > </src> > <dst> > <xsl:apply-templates select="local"/> > </dst> > </xsl:when> > <xsl:otherwise> > <src> > <xsl:apply-templates select="local"/> > </src> > <dst> > <xsl:apply-templates select="remote"/> > </dst> > </xsl:otherwise> > </xsl:choose> > </rule> > </xsl:template> > > <xsl:template match="remote"> > <xsl:value-of select="."/> > </xsl:template> > > <xsl:template match="local"> > <xsl:value-of select="."/> > </xsl:template> > > <!-- Named templates --> > <xsl:template name="determineprecedence"> > <xsl:param name="string"/> > <xsl:param name="value"/> > <!-- Returns the precedence of the rule --> > </xsl:template> > > > Output without sorting, after XSLT processor recursion: > <policy> > <rule type="pass" precedence="1"> > <src>192.168.129.67</src> > <dst>192.168.129.31</dst> > </rule> > <rule type="drop" precedence="2"> > <src>192.168.129.32</src> > <dst>192.168.129.67</dst> > </rule> > <rule type="pass" precedence="0"> > <src>192.168.129.67</src> > <dst>192.168.129.33</dst> > </rule> > </policy> > > Desired output: > <policy> > <rule type="pass" precedence="0"> > <src>192.168.129.67</src> > <dst>192.168.129.33</dst> > </rule> > <rule type="pass" precedence="1"> > <src>192.168.129.67</src> > <dst>192.168.129.31</dst> > </rule> > <rule type="drop" precedence="2"> > <src>192.168.129.32</src> > <dst>192.168.129.67</dst> > </rule> > </policy> > > I have been looking for some examples of the <xsl:sort> use. But I haven't catched any examples how this could be solved. This problem is only cosmetic, because of the precedence attribute. If there are many rules it is more comfortable to read the output file, if it is sorted by the precedence attribute as shown above. > > I'm wondering if it is possible apply some kind of post-sorting in the output tree structure, before it is outputted to XML file? If there exists some sorting examples in the web, please point it out to me. > > Atleast one solution could be forcing the apply of '//fw-rules/rule' template in the order <fw-rule-order> specifies. > Great Thanks, Sorry for the lacking well-formness in the example. Your solution helps me get further with the transformation I'm working on by now. I'm beginner in XSLT and you introduced me a new function (translate(...)), which I didn't know it exists in XSLT ;) I must say, more I learn XSLT, confirms me that XSLT is very powerful language. Harry
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