Transform date from dd-mon-yy to yyyy-mm-dd

Question

Hi
I have a simple date transformation question.
my input date format is DD-MON-YY, I want this converted to YYYY-MM-DD
I did look into the xp20:format-dateTime and ora:formatDate but did not find a way
to control the input format. I did test the transformation below, and this one gives the expected output, as
long as the input is xp20:current-dateTime().
<xsl:value-of select="xp20:format-dateTime(xp20:current-dateTime(),'[Y0001]-[M01]-[D01]')"/>
How do I switch the date format to handle DD-MON-YY as input.
To be specific:
when ns:myDate=01-Aug-08' I would expect outcome as below,
<xsl:value-of select="xp20:format-dateTime(ns:myDate,'[Y0001]-[M01]-[D01]')"/> => 2008-08-01
but this is clearly not so.
any idea on how to do this, without starting a full substring-implementation?
according to this thread, it looks like we need to leave this to java, but I believe it must be possible to
handle this within xslt-transformation.
On the other hand, dd-mon-yy is not ISO, and four digit year would be unambiguous .
anyway:
Re: BPEL format Date issue

Answer 1

I understand its frustrating to not get a solution from the xslt which is a strong language in itself. I have faced the same problem, but i got a way to do in xslt using templates.
If anybody is interested here is the solution.
My input value is for eg. '1-May-12'
Output value should be in ISO format '2012-05-01T00:00:00.000'
+<xsl:template name="formatDateTime">+
+<xsl:param name="DateTime"/>+
+<xsl:value-of select="concat('20',substring-after(substring($DateTime,oraext:last-index-within-string($DateTime,'-')),'-'))"/>+
+<xsl:text>-</xsl:text>+
+<xsl:choose>+
+<xsl:when test="substring-before(substring-after($DateTime,'-'),'-')='Jan'">+
+<xsl:text>01</xsl:text>+
+</xsl:when>+
+<xsl:when test="substring-before(substring-after($DateTime,'-'),'-')='Feb'">+
+<xsl:text>02</xsl:text>+
+</xsl:when>+
+<xsl:when test="substring-before(substring-after($DateTime,'-'),'-')='Mar'">+
+<xsl:text>03</xsl:text>+
+</xsl:when>+
+<xsl:when test="substring-before(substring-after($DateTime,'-'),'-')='Apr'">+
+<xsl:text>04</xsl:text>+
+</xsl:when>+
+<xsl:when test="substring-before(substring-after($DateTime,'-'),'-')='May'">+
+<xsl:text>05</xsl:text>+
+</xsl:when>+
+<xsl:when test="substring-before(substring-after($DateTime,'-'),'-')='Jun'">+
+<xsl:text>06</xsl:text>+
+</xsl:when>+
+<xsl:when test="substring-before(substring-after($DateTime,'-'),'-')='July'">+
+<xsl:text>07</xsl:text>+
+</xsl:when>+
+<xsl:when test="substring-before(substring-after($DateTime,'-'),'-')='Aug'">+
+<xsl:text>08</xsl:text>+
+</xsl:when>+
+<xsl:when test="substring-before(substring-after($DateTime,'-'),'-')='Sep'">+
+<xsl:text>09</xsl:text>+
+</xsl:when>+
+<xsl:when test="substring-before(substring-after($DateTime,'-'),'-')='Oct'">+
+<xsl:text>10</xsl:text>+
+</xsl:when>+
+<xsl:when test="substring-before(substring-after($DateTime,'-'),'-')='Nov'">+
+<xsl:text>11</xsl:text>+
+</xsl:when>+
+<xsl:when test="substring-before(substring-after($DateTime,'-'),'-')='Dec'">+
+<xsl:text>12</xsl:text>+
+</xsl:when>+
+</xsl:choose>+
+<xsl:text>-</xsl:text>+
+<xsl:choose>+
+<xsl:when test="string-length(substring-before($DateTime,'-')) = 1">+
+<xsl:value-of select="concat('0',substring-before($DateTime,'-'))"/>+
+</xsl:when>+
+<xsl:otherwise>+
+<xsl:value-of select="substring-before($DateTime,'-')"/>+
+</xsl:otherwise>+
+</xsl:choose>+
+<xsl:text>T00:00:00.000<;/xsl:text>+
+</xsl:template>+
You can call this template on the element you want to use in the main template.
+<xsl:call-template name="formatDateTime">+
+<xsl:with-param name="DateTime" select=${your xpath}>+
+</xsl:call-template>+
Hope it helps.
Regards
Ayush