How to use the XSL Transform policy in Apigee Edge?

[#1]

I’m trying to use the Apigee Edge environment to do some XSL transforms. I have an XML file coming in as a request, and I’ve added an XSL Transform policy in the PostFlow of the Proxy Endpoint I built. Unfortunately, no matter what I write in the XSLT file, the XML is not transformed. I’ve read the help page on Apigee’s site regarding the policy, but there are no tips about how to use the develop and trace tools specifically, so I’m sure there must be something I’m missing.

Here is the the XML request:

<STOCKQUOTE ROWCOUNT="1">
<RESULT>
<ROW>
<ASK>54.280</ASK>
<BID>54.270</BID>
<CHANGE>-0.360</CHANGE>
<DIVIDEND>0.160</DIVIDEND>
<EPS>1.725</EPS>
<HIGH>54.390</HIGH>
<LASTPRICE>54.260</LASTPRICE>
<LOW>53.680</LOW>
<OPEN>53.870</OPEN>
<PCHANGE>-0.659</PCHANGE>
<PE>14.000</PE>
<PREVIOUSCLOSE>54.620</PREVIOUSCLOSE>
<YEARHIGH>54.750</YEARHIGH>
<YEARLOW>35.385</YEARLOW>
<YIELD>1.172</YIELD>
</ROW>
</RESULT>
<STATUS>No Error</STATUS>
<STATUSCODE>0</STATUSCODE>
</STOCKQUOTE>

Here is the XSL Transform (written in the Apigee client):

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
    <xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
    <xsl:strip-space elements="*"/>

    <xsl:template match="@*|node()">
        <xsl:copy>
            <xsl:apply-templates select="@*|node()"/>
        </xsl:copy>
    </xsl:template>

    <xsl:template match="ROW/*[not(name()='LASTPRICE')]">
        <xsl:copy-of select="."/>
    </xsl:template>

    <xsl:template match="LASTPRICE">
        <TRADE>
            <xsl:value-of select="."/>
        </TRADE>
    </xsl:template>
</xsl:stylesheet>

In Visual Studio, this transform simply changes the attribute <LASTPRICE></LASTPRICE> to <TRADE></TRADE>.

Here is the response from the trace tool (the LASTPRICE attribute has not been changed):

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE STOCKQUOTE PUBLIC '-//W3C//DTD StockQuote 1.5//EN' 'http://www.irxml.org/dtd/stockquote_1.5.dtd'><STOCKQUOTE ROWCOUNT='1'><RESULT><ROW><ASK>54.230</ASK><BID>54.220</BID><CHANGE>-0.394</CHANGE><DIVIDEND>0.160</DIVIDEND><EPS>1.725</EPS><HIGH>54.390</HIGH><LASTPRICE>54.226</LASTPRICE>.....