Hi Greg,
Thanks. Yeah, that's a typo there, but it definitely will not work as it
needs to include the Event_Id of current context (After) and corresponding
Before/Event_Id.
regards,
Enrico Raymundo
"Greg Fausak"
<lgfausak(_at_)gmail(_dot_)c
om> To
xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)co
08/07/2008 12:57 m
AM cc
Subject
Please respond to Re: [xsl] Comparing before and
xsl-list(_at_)lists(_dot_)mu after records
lberrytech.com [SEC=UNCLASSIFIED]
Protective Mark
Hi,
I'm kinda new to the list and to xslt. But, trying to understand
what you're doing here.
First, you reference:
---
<xsl:when test="//Before/Even_Field/text() =
Event_Field/text()">
<xsl:comment>unchanged</xsl:comment>
</xsl:when>
---
Probably just an example error, but, Event_Field instead of Even_Field.
-g
On Mon, Jul 7, 2008 at 1:33 AM,
<Enrico(_dot_)Raymund(_at_)immi(_dot_)gov(_dot_)au> wrote:
Hi Abel,
I was not able to come back to you sooner but here it is:
XML Input:
<?xml version="1.0" encoding="UTF-8"?>
<Events>
<Before>
<Event_Type>A</Event_Type>
<Event_Field>1111</Event_Field>
<Event_Id>1001</Event_Id>
</Before>
<Before>
<Event_Type>B</Event_Type>
<Event_Field>2222</Event_Field>
<Event_Id>1002</Event_Id>
</Before>
<After>
<Event_Type>A</Event_Type>
<Event_Field>1111</Event_Field>
<Event_Id>1001</Event_Id>
</After>
<After>
<Event_Type>B</Event_Type>
<Event_Field>2233</Event_Field>
<Event_Id>1002</Event_Id>
</After>
<After>
<Event_Type>C</Event_Type>
<Event_Field>1122</Event_Field>
<Event_Id>1003</Event_Id>
</After>
</Events>
The XSL file:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
<xsl:output encoding="UTF-8" indent="yes" method="xml" version="1.0"/>
<xsl:strip-space elements="*"/>
<xsl:key match="/Events/Before" name="BEFORE_ID" use="Event_Id"/>
<!-- Root Template -->
<xsl:template match="/">
<xsl:choose>
<xsl:when test="count(//After) > 0">
<xsl:for-each select="//After">
<xsl:choose>
<xsl:when test="key('BEFORE_ID', Event_Id)">
<xsl:call-template
name="INSTANTIATE_MODIFY_EVENT">
<xsl:with-param name="EVENT_TYPE"
select="Event_Type"/>
<xsl:with-param name="AFTER_EVENT_ID"
select="Event_Id"/>
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:call-template
name="INSTANTIATE_CREATE_EVENT">
<xsl:with-param name="EVENT_TYPE"
select="Event_Type"/>
<xsl:with-param name="AFTER_EVENT_ID"
select="Event_Id"/>
</xsl:call-template>
</xsl:otherwise>
</xsl:choose>
</xsl:for-each>
</xsl:when>
<xsl:otherwise>
<!-- No occurence of 'After': there is nothing to output>
-->
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<!--=============================================================-->
<!-- NAMED TEMPLATES -->
<!--=============================================================-->
<xsl:template name="INSTANTIATE_MODIFY_EVENT">
<!-- MODIFY -->
<xsl:param name="EVENT_TYPE"/>
<xsl:param name="AFTER_EVENT_ID"/>
<xsl:result-document encoding="utf-8"
href="{$EVENT_TYPE}_{$AFTER_EVENT_ID}.xml"
indent="yes" method="xml">
<Event>
<Operation>MODIFY</Operation>
<xsl:choose>
<!-- ### THIS IS WHERE I NEED HELP ###-->
<!-- NEED TO TAKE INTO CONSIDERATION the Event_Id of>
the current (After) context -->
<!-- CAN THIS BE DONE WITHOUT USING key() and>
generate-id()? -->
<xsl:when test="//Before/Even_Field/text() =
Event_Field/text()">
<xsl:comment>unchanged</xsl:comment>
</xsl:when>
<!-- ### THIS IS WHERE I NEED HELP ###-->
<xsl:otherwise>
<xsl:comment>changed</xsl:comment>
</xsl:otherwise>
</xsl:choose>
<Field>
<xsl:value-of select="Event_Field"/>
</Field>
</Event>
</xsl:result-document>
<!-- CREATE -->
</xsl:template>
<xsl:template name="INSTANTIATE_CREATE_EVENT">
<xsl:param name="EVENT_TYPE"/>
<xsl:param name="AFTER_EVENT_ID"/>
<xsl:result-document encoding="utf-8"
href="{$EVENT_TYPE}_{$AFTER_EVENT_ID}.xml"
indent="yes" method="xml">
<Event>
<Operation>CREATE</Operation>
<Field>
<xsl:value-of select="Event_Field"/>
</Field>
</Event>
</xsl:result-document>
</xsl:template>
</xsl:stylesheet>
The requirements are as follows:
(1) Create a separate XML file for each "After" instance.
(2) If an "After" instance has no corresponding "Before" instance,
related
by EventId, then this a create operation, ie,
<Operation>CREATE</Operation>
(3) If an "After" instance has a corresponding "Before" instance,
related
by EventId, then this a modify operation, ie,
<Operation>MODIFY</Operation>
(3.1) If the value of the Before/Event_Field != to
After/Event_Field,
put a comment: "<!--changed-->"
(3.2) If the value of the Before/Event_Field = to After/Event_Field,
put a comment: "<!--unchanged-->"
The code between "<!-- ### THIS IS WHERE I NEED HELP ###-->" is where I
need a proper XPath put in. With the input XML, the XSLT creates 3 XML
files -- which it does, the XSLT created the following files:
A_1001.xml [the comment is wrong (as the XPath is wrong):
Before/EventField = 1111; After/EventField = 1111 (unchanged)]
<?xml version="1.0" encoding="utf-8"?>
<Event>
<Operation>MODIFY</Operation>
<!--changed-->
<Field>1111</Field>
</Event>
B_1002.xml [the comment field is correct: Before/EventField = 2222;
After/EventField = 2233 (changed)]
<?xml version="1.0" encoding="utf-8"?>
<Event>
<Operation>MODIFY</Operation>
<!--changed-->
<Field>2233</Field>
</Event>
C_1003.xml [This is correct because there is no <Before> for
EventId="1003"]
<?xml version="1.0" encoding="utf-8"?>
<Event>
<Operation>CREATE</Operation>
<Field>1122</Field>
</Event>
Thanks in advance.
Enrico
Abel Braaksma
<abel(_dot_)online(_at_)xs4a
ll.nl> To
xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)co
03/07/2008 05:22 m
PM cc
Subject
Please respond to Re: [xsl] Comparing before
xsl-list(_at_)lists(_dot_)mu and after records
lberrytech.com [SEC=UNCLASSIFIED]
Protective Mark
Enrico(_dot_)Raymund(_at_)immi(_dot_)gov(_dot_)au wrote:
The creation of the multiple output document and the transformations are
easy. The help I need is in comparing the <Before> and <After> contents
with the same <EventId>.
Your example input and output looks excellent and clearly indented, but
please also show us your current xslt file, so we can help you with
where you went wrong (and explain what you tried so we can understand
where you're coming from). Now it's just a guessing game... (see the
list guidelines for more help).
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