Github user pluradj commented on a diff in the pull request:
https://github.com/apache/tinkerpop/pull/501#discussion_r97098416
--- Diff: gremlin-core/src/main/resources/tp2-to-tp3-graphml.xslt ---
@@ -0,0 +1,40 @@
+<?xml version="1.0" ?>
+<!-- XSL stylesheet to convert TinkerPop v2 GraphML files for Apache
TinkerPop v3 -->
+<xsl:stylesheet version="1.0"
+ xmlns="http://graphml.graphdrawing.org/xmlns";
+ xmlns:graphml="http://graphml.graphdrawing.org/xmlns";
+ xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
+ exclude-result-prefixes="graphml">
+ <xsl:output method="xml" indent="yes" omit-xml-declaration="yes"/>
+ <xsl:strip-space elements="*"/>
+
+ <xsl:template match="node()|@*">
+ <xsl:copy>
+ <xsl:apply-templates select="node()|@*"/>
+ </xsl:copy>
+ </xsl:template>
+
+ <xsl:template match="graphml:graphml">
+ <graphml>
+ <key id="labelV" for="node" attr.name="labelV"
attr.type="string"/>
+ <key id="labelE" for="edge" attr.name="labelE"
attr.type="string"/>
+ <xsl:apply-templates/>
+ </graphml>
+ </xsl:template>
+
+ <xsl:template match="graphml:node">
+ <node>
+ <xsl:apply-templates select="node()|@*"/>
+ <data key="labelV">vertex</data>
+ </node>
+ </xsl:template>
+
+ <xsl:template match="graphml:edge">
+ <edge id="{@id}" source="{@source}" target="{@target}">
+ <data key="labelE">
+ <xsl:value-of select="@label"/>
+ </data>
--- End diff --
Adding `<xsl:copy-of select="node()"/>` here seems to work.
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