Issues using parameters with namespaces

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Greetings,

I've been having a heck of a time trying to pass a parameter
to xsltApplyStylesheet
that has namespaces in the xpath expression.

For example (abbreviated):
stylesheet:
<xsl:stylesheet xmlns:dm="urn:ietf:params:xml:ns:pidf:data-model" ...>
<xsl:param name="path" select="/*" />
 <xsl:template match="/">
<xsl:apply-templates select="$path"/>
</xsl:template>

xml:
<presence xmlns:dm="urn:ietf:params:xml:ns:pidf:data-model" ...>
<dm:device/>
...

$ xsltproc --param path "//dm:device" pidf_lo.xslt pidf_lo_test.xml
XPath error : Undefined namespace prefix
runtime error
Evaluating user parameter path failed

if I hard code that select="//dm:device"  it works fine.

Finally I did find a workaround by calling xsltNewTransformContext() then
iterating
over the nsDefs in the stylesheet document and calling xmlXPathRegisterNs on
ctxt->xpathCtxt for each nsDef.

I would have thought this would have been done automatically though.  Did I
miss something or is there a better way to do this?

Thanks!






-- 
George Joseph
Asterisk Software Developer
Check us out at www.sangoma.com and www.asterisk.org
[image: image.png]

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<div dir=3D"ltr">Greetings,<div><br></div><div>I&#39;ve been having a heck =
of a time trying to pass a parameter to=C2=A0xsltApplyStylesheet</div><div>=
that has namespaces in the xpath expression.=C2=A0=C2=A0</div><div><br></di=
v><div>For example (abbreviated):</div><div>stylesheet:</div><div>&lt;xsl:s=
tylesheet xmlns:dm=3D&quot;urn:ietf:params:xml:ns:pidf:data-model&quot; ...=
&gt;</div><div>&lt;xsl:param name=3D&quot;path&quot; select=3D&quot;/*&quot=
; /&gt;<br></div><div>=C2=A0&lt;xsl:template match=3D&quot;/&quot;&gt;<br>	=
	&lt;xsl:apply-templates select=3D&quot;$path&quot;/&gt;<br>	&lt;/xsl:templ=
ate&gt;<br></div><div><br></div><div>xml:</div><div>&lt;presence xmlns:dm=
=3D&quot;urn:ietf:params:xml:ns:pidf:data-model&quot; ...&gt;</div><div>&lt=
;dm:device/&gt;</div><div>...</div><div><br></div><div>$=C2=A0xsltproc --pa=
ram path &quot;//dm:device&quot; pidf_lo.xslt pidf_lo_test.xml</div><div>XP=
ath error : Undefined namespace prefix<br>runtime error<br>Evaluating user =
parameter path failed<br clear=3D"all"><div><br></div><div>if I hard code t=
hat select=3D&quot;//dm:device&quot;=C2=A0 it works fine.</div><div><br></d=
iv><div>Finally I did find a workaround by calling=C2=A0xsltNewTransformCon=
text() then iterating</div><div>over the nsDefs in the stylesheet document =
and calling=C2=A0xmlXPathRegisterNs on</div><div>ctxt-&gt;xpathCtxt for eac=
h nsDef.</div><div><br></div><div>I would have thought this would have been=
 done automatically though.=C2=A0 Did I</div><div>miss something or is ther=
e a better way to do this?</div><div><br></div><div>Thanks!</div><div><br><=
/div><div><br></div><div><br></div><div><br></div><div><br></div><div><br><=
/div>-- <br><div dir=3D"ltr" class=3D"gmail_signature" data-smartmail=3D"gm=
ail_signature"><div dir=3D"ltr"><div><div dir=3D"ltr"><div dir=3D"ltr"><div=
 dir=3D"ltr"><div dir=3D"ltr" style=3D"font-size:12.8px"><div dir=3D"ltr" s=
tyle=3D"font-size:12.8px"><div style=3D"font-family:tahoma,sans-serif;font-=
size:small"><span style=3D"color:rgb(7,55,99)">George Joseph</span><br></di=
v></div><div dir=3D"ltr" style=3D"font-size:small"></div><div style=3D"font=
-family:tahoma,sans-serif;font-size:small"><span style=3D"color:rgb(7,55,99=
)">Asterisk Software Developer</span><br></div><div style=3D"font-family:ta=
homa,sans-serif;font-size:small"><font color=3D"#073763">Check us out at</f=
ont>=C2=A0<a href=3D"http://www.sangoma.com/" style=3D"color:rgb(17,85,204)=
" target=3D"_blank">www.sangoma.com</a>=C2=A0and=C2=A0<a href=3D"http://www=
.asterisk.org" target=3D"_blank">www.asterisk.org</a><br></div><div style=
=3D"font-family:tahoma,sans-serif;font-size:small"><img src=3D"cid:ii_k3abt=
e590" alt=3D"image.png" width=3D"184" height=3D"32" style=3D"margin-right:0=
px"></div></div></div></div></div></div></div></div></div></div>

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