Question

I think I have this working but I need advice. I’d like to know if this is a good setup for the requirement that I have.
I’ve got a requirement to apply different transformation rules to an element based on what is contained in that element. I’ve tried to search for ‘xsl’ and ‘choose’, ‘contains’, ‘substring’. I can’t seem to find a solution applicable to this situation.

Here are the various scenarios for this element:

1. If it begins with U, I need everything before the ‘/’

   • Original Value: UJXXXXX/001

   • Transformed : UJXXXXX

2. If it begins with ECG_001 I need everything after ECG_001

   • Original Value: ECG_0012345678

   • Transformed : 12345678

3. If it does not meet the above criteria and contains a ‘/’ take everyting after the ‘/’

   • Original Value: F5M/12345678

   • Transformed : 12345678

4. If it does not meet 1,2, or 3 just give me the value

   • Original Value : 12345678

   • Transformed : 12345678

Here is what I have so far:

<xsl:variable name="CustomerPO">
        <xsl:choose>
            <xsl:when test="contains(substring(rma/header/CustomerPO,1,1), 'U')">
                <xsl:value-of select="substring-before(rma/header/CustomerPO,'/')"/>
            </xsl:when>
            <xsl:when test="contains(rma/header/CustomerPO, 'ECG_001')">
                <xsl:value-of select="substring-after(rma/header/CustomerPO,'ECG_001')"/>
            </xsl:when>
            <xsl:when test="contains(rma/header/CustomerPO, '/')">
                <xsl:value-of select="substring-after(rma/header/CustomerPO, '/')"/>
            </xsl:when>
            <xsl:otherwise>
                <xsl:value-of select="rma/header/CustomerPO"/>
            </xsl:otherwise>
        </xsl:choose>
    </xsl:variable>

Any feedback on potential loopholes or a more efficient way to accomplish this is appreciated.

Thanks.

Answer 1

Your XSLT looks fine. You might consider using the starts-with function rather than substring, I find it easier to read, but I am not sure it is any faster.