I have made a proxy service where the value of "Request1" property showing properly as in incoming request
<s1:PALMUpdateCatalogueRequest xmlns:s1="http://www.example.org/prodcatItemWSO2/">
<s1:updateproductCatalogueList>
<s1:catalogueinternalid>1</s1:catalogueinternalid>
ABC
<s1:itemList>
<s1:Item>
<s1:custitem_prod_cat_item>390</s1:custitem_prod_cat_item>
<s1:item_price_level>7</s1:item_price_level>
<s1:typeofitem>PQR</s1:typeofitem>
</s1:Item>
</s1:itemList>
</s1:updateproductCatalogueList>
<s1:transactionid />
</s1:PALMUpdateCatalogueRequest>
But,after calling a sequence when I am using this below expression to fetch the value of Request1,it's not showing.
What will I do to solve this issue?
<property name="REQUEST" expression="get-property('Request1')" scope="default" type="STRING"/>
You should use correct scopes to read properties. If your property is in the synapse scope, you can read it like this.
<property name="REQUEST" expression="$ctx:Request1" scope="default" type="STRING"/>
Related
I want extract request body of a API call returning as a text.
Response from log mediator.
<?xml version='1.0' encoding='utf-8'?><soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"><soapenv:Body><text xmlns="http://ws.apache.org/commons/ns/payload">**1**</text></soapenv:Body></soapenv:Envelope>
I want to extract 1 which is coming in the body. Please see the screenshot.
I have tried following it didn't work
<property expression="$body" name="api_response_status" scope="default" type="STRING"/>
Following Property Expression worked for me.
<property expression="json-eval($.text)" name="api_response_status" scope="default" type="STRING"/>
I'm having a problem with using apostrophe character in the property expression.
I tried ', \', but they were failed. So, currently I'm managing myself with defining it as another property as mentioned below.
<property value="'" name="apos" scope="default" type="STRING"/>
<property description="xpathexpr" expression="fn:concat('$ctx:hotel-static-data-rs//jsonObject/rows[id=',$ctx:apos,'hotelbeds_v3-',$ctx:hotelcode,$ctx:apos,']/value')" name="xpathexpr" scope="default" type="STRING"/>
<property description="hotel-static-data-element" expression="evaluate($ctx:xpathexpr)" name="hotel-static-data-element" scope="default" type="OM"/>
I'm sure there must be a better way to handle this. So, if anyone have a clue please update.
WSO2 ESB version : 5.0.0
Try replace apostrophe character as this example.
<property name="hotelContentExpr"
expression="fn:concat('//content[hotelcode=','"',get-property('htlCode'),'"',']')"
scope="default"
type="STRING"/>
I'm calling an HTTP endpoint and getting the response in
a sequence. Response is getting logged in the seq_sla_resp.
<send receive="seq_sla_resp">
<endpoint key="gov:EDI/SLA/endpoints/edi_sla_payment_ep.xml" />
</send>
Inside this response sequence I'm unable to get a property which I set previously during the call (in the main proxy).
<property expression="//m1:sla_row/m1:tran_id/text()"
name="tran_id" scope="default" type="STRING"
xmlns:m1="http://ws.wso2.org/dataservice" />
When I try to log the property in the seq_sla_resp it ends up in the below error message
<log>
<property expression="$tran_id" name="tran_id" xmlns:m0="http://ws.wso2.org/dataservice"/>
</log>
Following is the error.
SynapseXPath Evaluation of the XPath expression $tran_id resulted in an error
org.jaxen.UnresolvableException: Variable tran_id
How can i get the context value in the response sequence.
In the documentaion it says default scope has the largest life span for the property.
Any help is very much appreciated.
I think you would find that your expression would also not work in the inSequence. You should either use expression="$ctx:tran_id" or expression="get-property('tran_id')"
Please note that WSO2 recommends using $ctx instead of the get-property if the scope is default. The get-property methods search in the registry if the value is not available in the message context. Therefore, it affects the performance.
In your case , you can use
<property expression="$ctx:tran_id" name="tran_id" scope="default" xmlns:m0="http://ws.wso2.org/dataservice"/>
Thanks
Kranthi
i stored an XML document in a property:
<property expression="$body//*" name="InDoc"
scope="default" type="OM"/>
in a later step of the proxy a want to access the XML doucment.
This
<log level="custom">
<property name="InDoc" expression="get-property('InDoc')"/>
</log>
gives the whole XML document. But I would like to access only some parts of the XML e.g. only one value in a later step of the proxy. I already tried
<log level="custom">
<property name="InDoc" expression="get-property('InDoc')//AAA"/>
</log>
or this
<log level="custom">
<property name="InDoc" expression="$ctx:InDoc//AAA"/>
</log>
But both do not work. Is there another way?
Thanks in advance.
Roland
I think both way should work fine. The expression support XPath 1.0. You can run any XPath after the "get-property" in expression.
But you need check,
make sure you use the right XPath.
So you can log/copy the get-property('InDoc'), and then you can use any XPath tool to validate your XPath.
Namespace of the XPath in expression,
if your xml payload have namespace, make sure your XPath namespace is right, and declare right NS in property.
Through property mediator, you are not going to store XML file, you just retrieving content from it. As you have to retrieve part of it, you can give it through property mediator.
<property expression="$body//*" name="InDoc" scope="default" type="OM"/>
Through expression you should define it.
expression="$body//*"
You can change this and get required parts of xml. If you need few parts, you can add several properties for each and retrieve value from it.
My Requirement is that i have to create some property based on xpath based on chaining.
Flow is something like :
1)i am calling service1 and based on that response i am creating the property mediator (svc1_property).
2)The call is made to service2 and the response fetched from the service2 has a list of values .
3) I need to fetch a node from the response of svc2 based on the xpath using property : svc1_property.
Config is :
expression="fn:concat("//ImageList[Level='Employee'][ImageCaption='",$ctx:EmpName,"']/IMG_Large")"
scope="default"
type="STRING"
EmpName is the property created on svc1
Use evaluate
Example:
<property name="xpathexpr" expression="fn:concat('//',get-property('xpathexpression'))" scope="default" type="STRING"/>
<property name="xpatheval" expression="evaluate($ctx:xpathexpr)" scope="default" type="STRING"/>
You can find more infomation in this blog.
The Above article shows the case where property is being used for source . But my requirement is different. The response coming from one API will give the empname and based on that i will fetch the pics of the emp from the list expression="fn:concat("//ImageList[Level='Employee'][ImageCaption='",$ctx:EmpName,"']/IMG_Large")" scope="default" type="STRING" on execution of the above expression the reponse i am getting is //ImageList[Level='Employee'][ImageCaption='Timmy']/IMG_Large ...... if Timmy is the empname. it is just picking the variable name(Timmy in this case) and is not parsing the xpath getting created