Layer7 API Management

Hi,

I want to convert a string value saved in context_variable into lowercase/uppercase.

Can you please suggest how to transform.

I tried regular expression, but I was not able to convert.

Thanks,

Ravish

Hi Ravish4596,

This article should help with enforcing case: 

Enforcing character case in a context variable or string 

Regards,

Joe

Hi Joe,

I got this error while using XSL Transformation:

Message not XML, cannot perform XSL trasformation.

Regards,

Ravish

Ravish,

Did you get an error using the example policy or your own policy? Send us more details on what you are using.

Hi Mohindra,

I used the same example policy and got error.

I have a context variable "cv_Name" with value "Ravish Kumar".

I want to convert this value to "ravish kumar" (all in lower case).

I tried xsl transformation:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:output omit-xml-declaration="yes"/>
    <xsl:param name="cv_Name"/>
    <xsl:template match="/">
        <xsl:variable name="lowercase" select="'abcdefghijklmnopqrstuvwxyz'"/>
        <xsl:variable name="uppercase" select="'ABCDEFGHIJKLMNOPQRSTUVWXYZ'"/>
        <xsl:value-of select="translate($cv_Name,$uppercase,$lowercase)"/>        
    </xsl:template>
</xsl:stylesheet>

But I got an error: "Message not XML, cannot perform XSL trasformation".

Thanks,

Ravish

For all the messages, ensure their content-type is text/xml

Hi Joe,

I have tried the same and referred the link you shared. But I'm getting the same error as Ravish.

Initially, I have set a context variable (var_1) to "Anushka10" as a message type (text/xml).

Then applied the below XSL Transformation- 

    <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
   <xsl:output omit-xml-declaration="yes"/>
   <xsl:param name="foo"/>
   <xsl:template match="/">
   <xsl:variable name="lowercase" select="'abcdefghijklmnopqrstuvwxyz'"/>
   <xsl:variable name="uppercase" select="'ABCDEFGHIJKLMNOPQRSTUVWXYZ'"/>
   <xsl:value-of select="translate($foo,$uppercase,$lowercase)"/>
   </xsl:template>
   </xsl:stylesheet>

Regards,

Anushka

Hi Anushka,

Can you please show me the errors what are you getting.

Regards,

Ravish

I would recommend xpath 2.0, rather than xslt,

xpath expression: lower-case($orgstr)

Sample policy,

<?xml version="1.0" encoding="UTF-8"?>
<wsp:Policy xmlns:L7p="http://www.layer7tech.com/ws/policy" xmlns:wsp="http://schemas.xmlsoap.org/ws/2002/12/policy">
    <wsp:All wsp:Usage="Required">
        <L7p:SetVariable>
            <L7p:Base64Expression stringValue="PGEvPg=="/>
            <L7p:ContentType stringValue="text/xml; charset=utf-8"/>
            <L7p:DataType variableDataType="message"/>
            <L7p:VariableToSet stringValue="a"/>
        </L7p:SetVariable>
        <L7p:SetVariable>
            <L7p:Base64Expression stringValue="QUJjZCBFRiBNYXJr"/>
            <L7p:VariableToSet stringValue="orgstr"/>
        </L7p:SetVariable>
        <L7p:ResponseXpathAssertion>
            <L7p:VariablePrefix stringValue="lowercase"/>
            <L7p:XmlMsgSrc stringValue="a"/>
            <L7p:XpathExpression xpathExpressionValue="included">
                <L7p:Expression stringValue="lower-case($orgstr)"/>
                <L7p:Namespaces mapValue="included">
                    <L7p:entry>
                        <L7p:key stringValue="s"/>
                        <L7p:value stringValue="http://schemas.xmlsoap.org/soap/envelope/"/>
                    </L7p:entry>
                </L7p:Namespaces>
                <L7p:XpathVersion xpathVersion="XPATH_2_0"/>
            </L7p:XpathExpression>
        </L7p:ResponseXpathAssertion>
        <L7p:HardcodedResponse>
            <L7p:Base64ResponseBody stringValue="JHtsb3dlcmNhc2UucmVzdWx0c1swXX0="/>
            <L7p:ResponseContentType stringValue="text/plain; charset=UTF-8"/>
        </L7p:HardcodedResponse>
    </wsp:All>
</wsp:Policy>

this is very helpful