I understand how to retrieve data from an XML source using type providers. However, I need to then modify a particular part of the XML and save it to disk. I have tried assigning a value to the node using <- but the property is read-only.
For example:
let doc = MyXml.load fileName
doc.ItemId.Id <- "newId" // doesn't work
doc |> saveXml
There is a similar question for JSON where the suggestion is to create a new object, but this is specifically for XML.
While researching my question I found that you can use the .XElement accessor to get a reference to a mutable XElement object. Thus a solution is:
let doc = MyXml.load fileName
doc.ItemId.XElement.Element(XName.Get "Id").Value <- "newId" // tada
doc.XDocument.Save(...)
Note that you have to use the .XElement accessor on the parent if you're modifying a leaf node. This is because the leaf node's type is a primitive and doesn't have an .XElement accessor of its own. A slight shame, but I suppose it makes life easier on the other side when you want read-only access to the value.
Related
I have a requirement to read a csv file and generate several different projections of the data from save to files. I'm using CsvProvider to read the file and then map the data into other CsvProviders which I save to disk. Currently I have seperate save functions to save each of these projections. I'm wondering if I could create a generic saveCsv function like this?
let saveCsv<'a when 'a :> CsvProvider> (csvType:'a) fileName data =
let csv = new csvType(data)
csv.Save(fileName)
I can't seem to get the type constraint correct and also how do I new up a instance of the csvtype?
I read through the DOORS Reference Manual but couldn't find a simple insert method. I'm looking to insert an object, which was created within my DXL script, into a module.
I was hoping to find something intuitive like
insert_object_after(Module m, Object o, string object_identifier)
which would scan the module for the specified object identifier and insert the object after finding that identifier. Does such a function exist? If not how could I go about performing the action I've described?
Some basic example code would be awesome.
Chapter „Object management“. Use one of the commands
Object create(Module m)
Object create(Object o)
Object create(after(Object o))
Object create(before(Object o))
Object create(below(Object o))
Object create(first(below(Object o)))
Object create(last(below(Object o)))
For these functions, you need a variable of type Object. There are several ways to fill such a variable, look at the chapters „Finding objects“ and „Navigation from an object“. Probably the easiest way would be to use the function Object object(int absno[,Module m]) (with absno being the absolute number of the „source“ object. But beware that object only works if the current filter allows to navigate to this object, so, if the function "Go To“ from the menu works in your current view with your source object, then object should work as well
Right now I am using ArrayCollection. But I want to change that to Set as I want make sure do duplicate values come.
var addressList:ArrayCollection = new ArrayCollection();
One way is I can use Dictionary and store addresses as a key. And I can just use keys to iterate.
But I am looking for Java HashSet like implementation.
You want to download Polygonal Data Structures. The swc contains a HashSet. If you want Java-style template syntax for Flash, you should also check out Haxe.
The AS3 equivalent to HashMap or HashSet is the Dictionary class, and to a lesser extent, the Object class. Object keys are stored as strings, while with Dictionary the keys are objects. You can't have duplicate entries with either. Are you looking for a specific implementation other than that?
I'm encountering the following problem - I have simple GWT overlay types, and I'm trying to convert one to a JSON string on the client; I'm simply doing:
new JSONObject(this).toString();
The conversion works, but it adds an additional, incorrect key to the json string, such as:
{"key1":"value1", "key2":value2, "$H":1}
where "$H":1 doesn't correspond to anything in my overlay type.
Any idea why this is?
Any help is appreciated on this, thanks.
This issue is define in this link
The $H property comes from the
implementation of
JavaScriptObject#hashCode() (in
com.google.gwt.cire.client.impl.Impl#getHashCode(Object)).
In your case, this is due to
AbstractEditableCell maintaining a map
of value keys to their "view data",
and your use (I guess) of the default
ProvidesKey implementation
(SimpleProvidesKey) which directly
returns the item.
So, when rendering, the EditTextCell
calls getViewData, which looks up the
key in the map (and thus needs the
hashcode of the key, hence the call to
hashCode), and the key is your JSO
(hence the new $H property).
I believe that giving a ProvidesKey
implementation (in you case, returning
the name property for instance) to the
Celltable would solve your issue.
This could be a very basic question, but hopefully someone will be able to answer it.
I am receiving messages (HL7) using a custom receive pipeline. Inside my custom pipeline, I am promoting properties into the context. I have set up a map where I need to access these properties. However, I would like to access these properties on the send side. The reason why it needs to be on the send side is because I am attaching my map to the send port, so I assume that the message will have already hit the MessageBox and will be mapped on the send side. Hopefully that makes sense...
I know that there are a few 3rd party tools I can use, but I was hoping that there's a simple functoid, or some code I can enter in a scripting functoid that will access the context for me.
Would someone be able to point me in the right direction with this?
There is, indeed a C# functoid that allows access to context properties but it seems to only work with maps on a Receive Port or inside an Orchestration.
You can use the Context Accessor Functiod to do this... Combine it's pipeline component with yours and it should work... Beware it should be handled within the same thread...
http://contextaccessor.codeplex.com/
I don't know if this is possible. However, I had a similar requirement to access message context properties and I was able to populate a message with the context properties in an orchestration thanks to
Greg.Forsythe's excellent instructions
I had a similar situation to access the context properties to get the filename property in the my map. I did the below steps without using any external functoids. Hope this helps someone
Steps:
create a new schema say "FileSchema"
FileNode(rootNode)
-FileName (fieldElement)
Click the schema and in the properties target namespace - clear the namespace.
make the FileName property distinguished. Rt.Click FileName and show promotions and add FileName to Distinguished property tab.
In your target schema, add the field FileName. for me I added it to a SQL schema, since I need the filename for every row in the database
In your orchestration, use the message assignment shape and type the below
// create a variable varFileXML of type System.XML.XMLDocument
// I'm creating a xml same like the file schema and loading that to the XML variable and then assigning that to the Message of type FileSchema
varFileXML = new System.Xml.XmlDocument();
varFileXML.LoadXml("<FileNode><FileName>FileName_0</FileName></FileNode>");
Msg_FileSchema = varFileXML;
//Get the FileName to a variable of string type
varFileName = Msg_FlatFileSchema(FILE.ReceivedFileName);
varFileName = System.IO.Path.GetFileName(varFileName);
//Access the filename property from the message and assign the variable to that
Msg_File.FileName = varFileName;
Now that we got the FileName in to the message you can use that in mapping to your target schema
I used a transform shape to create a new inline map with source as your target schema and fileschema together and the destination as the target schema.I mapped the filename from the fileschema to my target schema the filename property
this is one of the many ways to get the context property. Hope it helps
thanks & regards
Silam