I have a really simple WCF service operation GetCurrentBalance. It returns a decimal.
I also have the odatagen generated entity files included in the project, which contains an implementation of the GetCurrentBalance operation returning a string. Calling this method returns me an XML string with the desired value in it.
I also tried using executeServiceOperation method in the generated class and pass in the operation name as a parameter, the returned value again is the same XML string.
Is there a way to extract this value? Or do I have to write a custom parser for it?
Thanks in advance.
Without further informations, if the returned value is a formatted XML string you may try extracting the value using XPath queries, have a look at this to get you started
Related
What I'm doing now:
I have a table with one field that is a json value that is stored as a super type in my staging schema.
the field containing the json is called elements
In my clean table, I typecast this field to VARCHAR in order to search it and use string functions
I want to search for the string net within that json in order to determine the key/value that I want to use for my filter
I tried the following:
select
elements
, elements_raw
from clean.events
where 1=1
and lower(elements) like '%net%'
or strpos(elements,'net')
My output
When running the above query, I keep getting an empty set returned.
My issue
I tried running the above code and using the elements_raw value instead but I got an issue :ERROR: function strpos(super, "unknown") does not exist Hint: No function matches the given name and argument types. You may need to add explicit type casts.
I checked the redshift super page and it doesn't list any specifics on searching strings within super types
Desired result:
Perform string operations on super field
Cast super field to a string type
There are some super related idiosyncrasies that are being run into here:
You cannot change the type of a super field via :: or cast()
String functions like and strpos do not work on super types
To address both of these issues, you can use the function json_serialize to return your super as a string.
I have consumed WCF service in biztalk through "Add generated items". There is a method in WCF which takes an integer parameter. In orchestration I want to pass that method a default value or say I want to hard code input value. How I can achieve this. I have googled this question but didn't get any adequate result.
What I have done is declared an integer variable assign it a value, then I assigned that variable to a message of Integer type.
Now how I can assign this message to WebService Request type message?
or how I can transform integer type message to WebService Request type message?
There are a bunch of ways to do this:
If you are mapping the request from another message, you can hard code it in the map - click on the field in the RHS of the Map Editor and set the hard coded value in the Value in the Property box
After creating a (dummy) request message, you can set the value using xpath() in an expression message assignment shape
xpath(myRequestMessage, "//*[local-name()='NameOfFieldHere']") = 3; // Or set to it your variable
If the field is distinguished in your schema, you can use the distinguished field instead of xpath, viz in an expression message assignment shape:
myRequestMessage.NameOfFieldHere = 3;
(And note if its a multipart message, then it will be myRequestMessage.Part.NameOfFieldHere OFC)
One disclaimer: I've assumed the WCF service request message is trivial, i.e. just a single integer field. If your message is large, using //local-name() ... isn't recommended, since
There may be more than one node with with the name NameOfFieldHere
The XSL parser used by BizTalk is slow and resource intensive when evaluating large xml documents with //
Biztalk Scheduler Adapter is really helpful in this case. It generates desired XML on predefined scheduled set by the user. So fill up your XML with hard coded values and receive them through this adapter.
For instance, when to use
GetterUtil.getBoolean()
and when
ParamUtil.getBoolean()?
Are both same, or is it expected to be used differently according to a parameter, a variable, etc? Can you give some examples for both?
Both are util methods to avoid Null-Pointer Exceptions.
GetterUtil internally returns the default type and does the casting too. So in case where someone has passed a null value, it will return default value of the type.
Example:
Assume you have a String value "true", and you are expecting it will always be of type boolean. So you use GetterUtil.getBoolean("true") which will internally do the casting to boolen and return the value as boolean-true. Incase someone passes rubbish characters like "tr", it will be converted to boolean-false.
As mentioned ParamUtil does the same treatment with request parameters. ParamUtil internally uses the GetterUtil to have the above behaviour. It first retrieves the parameter (which always would be a string) and then passes it to GetterUtil.getType() method and in turn returns the proper type.
GetterUtil and ParmUtil both are different classes.
GetterUtil is to get the default values for basic Java data types.
ParamUtil is to retrive the values(of primitive data types) from the HttpReqeust.
Check the source code here for these two classes here
For GetterUtil
http://docs.liferay.com/portal/6.0/javadocs/src-html/com/liferay/portal/kernel/util/GetterUtil.html
For ParamUtil
http://docs.liferay.com/portal/5.1/javadocs/portal-kernel/com/liferay/portal/kernel/util/ParamUtil.java.html
I've a simple class like this:
Public Class CalculationParameter{
public Long TariffId{get;set;}
}
In a workflow activity, I've an Assign like this:
(From tariffDetail In db.Context.TariffDetails
Where tariffDetial.TariffId = calculationParameter.TariffId).FirstOrDefault()
Dto is passed to Activity as an Input Argument.
It raise following error and I'm wondering how to assign Id. Any Idea?
LINQ to Entities does not recognize the method 'Int64
GetValue[Int64](System.Activities.LocationReference)' method, and this
method cannot be translated into a store expression.
How can I assign the calculationParameter.TariffId to tariffDetial.TariffId?!
UPDATE:
Screen shot attached shows that how I'm trying to assign calculationParameter.TariffId to tariffDetail.TariffId (car.Id = Dto.Id) and the query result should assign to CurrentTrafficDetail object.
Here's your problem. I don't know if there is a solution to it.
As you said in a (now deleted, unfortunately necessitating that I answer) comment, the exception you're getting is
LINQ to Entities does not recognize the method Int64 GetValue[Int64](System.Activities.LocationReference) method, and this method cannot be translated into a store expression.
in your Linq query, calculationParameter is a Variable defined on the workflow. That Variable is actually an instance that extends the type System.Activities.LocationReference and NOT CalculationParameter.
Normally, when the workflow executes, the LocationReference holds all the information it needs to find the value which is assigned to it. That value isn't retrieved until the last possible moment. At runtime, the process of retrieval (getting the executing context, getting the value, converting it to the expected type) is managed by the workflow.
However, when you introduce Linq into the mix, we have the issue you are experiencing. As you may or may not know, your expression gets compiled into the extension method version of the same.
(From tariffDetail In db.Context.TariffDetails
Where tariffDetial.TariffId = calculationParameter.TariffId)
.FirstOrDefault()
is compiled to
db.Context.TariffDetails
.Where(x => x.TariffId = calculationParameter.TariffId)
.FirstOrDefault();
When this executes, L2E doesn't actually execute this code. It gets interpreted and converted into a SQL query which is executed against the database.
As the interpreter isn't omniscient, there are a well defined set of limitations on what methods you can use in a L2S query.
Unfortunately for you, getting the current value of a LocationReference is not one of them.
TL:DR You cannot do this.
As for workarounds, the only thing I think you can do is create a series of extension methods on your data context type or add methods to your CalculationParameter class that you can call from within the Expression Editor. You can create your Linq to Entities queries within these methods, as all types will already have been dereferenced by the workflow runtime, which means you won't have to worry about the L2E interpreter choking on LocationReferences.
*Edit: A workaround can be found here (thanks to Slauma who mentioned this in a comment on the question)
I am trying to deserialize an Xml file content into a specific object. Everything runs fine but when I include empty tag of type date or time in my xml(having xsd that describes my xml structure) the deserialization fails. What can I do to make deserialization working when empty date tags are appear?
Thanks
Pan
A DateTime cannot be empty - instead try using the DateTime.Min value.