I found the following difference between the old VBScript API and the .Net API:
In the old VBScript API it's possible to invoke "TDSE.getObject" to retrieve a Tridion object passing by the webdav path, an integer to select how to open it (read only, read and write, etc) and the ID of the publication where there is the exact element of the blueprint we want.
In the new .Net API all I found was "Engine.GetObject" but it only receives the TCM ID or the webdav path of an element.
Our scenario is the following; in the old VBScript code, this overload of the getObject method was used to avoid some permission issues detected while using TCM IDs instead of the webdav paths and because it's much more handful when you need to copy the code between different environments (see DEV, PREPROD and PROD for example), avoiding changing TCM IDs.
So my questions are:
Is there and overload like the old one in the new .Net API?
If not, is there a way of retrieving items by webdav keeping in mind that some of them could be localized and changed from their parent? (the old way works with this, if you send the root webdav path it will retrieve local objects even if their names aren't exactly the same as the parents)
Thank you!
Do you want to be able to use the webdav url of the top-level item, and specify the publication id from which to get the item?
I would create an extension method on Engine that does this for you:
public static T GetObject<T>(this Engine engine, string webDavUrl, int publicationId)
where T : IdentifiableObject
{
[logic to retreive the item and then if needed
get the correct tcm uri and get the intended item]
return item as T;
}
However, this is quite an expensive operation since you get two objects instead of one. So I dont know if I would use this method very often.
Here some samples
IdentifiableObject item = engine.GetObject(new TcmUri("tcm:5-677"));
//will give you the latest approved version in the publication 5.
IdentifiableObject item = engine.GetObject(new TcmUri("tcm:5-677-v0"));
//will give you the WF or Editable version.
TcmUri uri = new TcmUri("tcm:5-677");
uri.PublicationId = 6;
IdentifiableObject item = engine.GetObject(uri);
//will give you the latest approved version in the publication 6.
Engine.GetObject has 4 overloaded method.
GetObject(Session, string)
GetObject(string)
GetObject(TcmUri)
GetObject(Item)
You can check the Tom.Net Api for more details.
Actually, using Engine.GetObject Method (String) should work.
public virtual IdentifiableObject GetObject(
string itemUriOrWebDavUrl
)
You can do something in this way:-
Get the Object based on WebDav URL
Get the TCM ID from this object
Based on your publication, modified your TCM ID accordingly and do your stuff
OR
Try something this way too:-
Repository testRepository = (Repository)session.GetObject("tcm:0-2-1");
Component testComponent = (Component)testRepository.GetObject(webdavURL); //Assuming actual TCM ID is "tcm:1-3"
Console.WriteLine(testComponent.Id); // should show "tcm:2-3"
// Do Your Other Stuff
Related
I just upgraded a project from RavenDB 3.5 to 4.0 and one of the biggest change I noticed is the way they change the way Ids are generated.
In my project most of the collections have a basic id structure like "[collection name]/[progressive id]", where the progressive id is an integer, and not the new default "[progressive]-[node]".
Following the documentation I specified the pattern id for new documents as "[collection name]|" and is actually generating unique/progressive/integer ids.
The problem is when I've to save transactionally 2 or more documents and reference them between themselves. Let's say I've two kind of object:
User entity
{
"Id": "users/1",
...
}
User address entity
{
"Id": "userAddresses/1",
"UserId": "users/1",
...
}
Where in the second document I need to reference the first one via the UserId field.
Before the version 4.0 I was able, in the same transaction, to do something like:
User newUser = new User();
session.Store(newUser)
UserAddress newUserAddress = new UserAddress();
newUserAddress.UserId = newUser.Id;
session.Store(newUserAddress);
session.SaveChanges();
After the session.Store(newUser) if I accessed the newUser.Id property I was able to see the generated Id. Now I just see "users|", I've to wait after the SaveChanges() to see the generated Ids.
This behaviour seems to happen only for Identities Ids, if I use the id structure "[collection name]/[progressive]-[node]" I'm able to see the generated id right after the Store().
Is it by design? Is there a way to force the old behaviour?
OR How can I manage transactionally a situation like this one using progressive/integer ids?
In RavenDB v4.0 you have the same behavior. After you call to session.Store(entity), or await session.StoreAsync(entity) for the async session, you should have the entity.Id filled with the ID.
It is setting the ID using the HiLo approach, which you can read about it here:
https://ravendb.net/docs/article-page/4.0/Csharp/server/kb/document-identifier-generation#hilo-algorithm
The only difference in RavenDB v4.0 that the ID would be like: users/1-A instead of users/1 in the previous versions.
Using Camunda as the tool for orchestration of the microservices. At later time, I find the process_instances_id generated necessary for continuing a particular process by using it in messageEventReceived(). Code as follows:
val processid = getProcessID(key1, key2)
val runtimeService = processengine.getRuntimeService
val subscription = runtimeService.createEventSubscriptionQuery
.eventType("message")
.eventName(eventname)
.processInstanceId(executionid)
.singleResult
runtimeService.messageEventReceived(subscription.getEventName, subscription.getExecutionId)
As of this moment the processid is saved and then retrieved from the database using the getProcessID(...) function when necessary. Is this proper?
Does camunda already have the list of process_ids in its own database? If so, how do I retrieve a particular process instance id just giving composite key(s)? Is that even possible?
It is the common way. You can also use the public api to get the process instance and his id via the process definition key.
See the following example from the documentation:
runtimeService.createProcessInstanceQuery()
.processDefinitionKey("invoice")
.list();
For your given example there is also a simpler way. It is possible to correlate the message via the runtime service.
See this example from the documenation:
runtimeService.createMessageCorrelation("messageName")
.processInstanceBusinessKey("AB-123")
.setVariable("payment_type", "creditCard")
.correlate();
You can use
runtimeService.createProcessInstanceQuery().list();
the query supports fluent criteria for filtering, for example on process_key, variables, businessKey ...
i have a DB that stores all local user contacts.
now i want to use the new framework (contact framework), my problem is that the CNContact have a new identifier now (no longer the auto-incretntal one) called "identifier" and i can't mach old entries in my DB with a potential update of a contact.
i have 2 questions:
in xcode debugger, i can see _iOSLegacyIdentifier(the old, auto-incremental one) as a property in CNContact, how can i get it without private API calls
i can't see "lastModifcationDate" for the CNContact (in ABAddressBook framework it is called kABPersonModificationDateProperty) how can i get it using the new framework.
thanks.
[EDIT]: i have open a ticket for Apple about this and here's the answer:
There are no plans to address this based on the following:
1) iOSLegacyIdentifier is private API for CNContact. 2) A modification
date is not offered on CNContact.
To migrate your DB you can to match contacts by name and disambiguate
by manually matching other properties like email addresses or phone
numbers.
We are now closing this report.
as you can see there's no real solution for this, we have to guess..
you can obtain ContactID (iOSLegacyIdentifier) with new Contact Framework. I use this in my app to find iOSLegacyIdentifier for specific contact, you can modify for your pleasure.
let predicate = CNContact.predicateForContacts(matchingName: "contactName")
let toFetch = [CNContactGivenNameKey, CNContactFamilyNameKey, CNContactIdentifierKey]
do{
let contacts = try self.contactStore.unifiedContacts(matching: predicate, keysToFetch: toFetch as [CNKeyDescriptor])
for contact in contacts{
var diccionario:[String : Any] = contact.dictionaryWithValues(forKeys: ["iOSLegacyIdentifier"])
//With this you can see/obtain iOSLegacyIdentifier
print(diccionario["iOSLegacyIdentifier"] as! Int)
return;
}
} catch let err{
print(err)
}
1.Doesn't exists. There is only private selector
[CNContact iOSLegacyIdentifier];
or you can get the same
[CNContainer CNContainerIOSLegacyIdentifierKey];
Mind that this is not compiled in framework. Use perform selector
2.There is no such property in the new framework. If you disassembly the Contact framework you can see that uniqueId is still used in predicates that touches underlaying core data. But that's a work for you and again dance with private selectors
(blame Apple, not me that there is no way). Take a look at internals of the framework.
I have a document in RavenDB that looks looks like:
{
"ItemId": 1,
"Title": "Villa
}
With the following metadata:
Raven-Clr-Type: MyNamespace.Item, MyNamespace
Raven-Entity-Name: Doelkaarten
So I serialized with a type MyNamespace.Item, but gave it my own Raven-Entity-Name, so it get its own collection.
In my code I define an index:
public class DoelkaartenIndex : AbstractIndexCreationTask<Item>
{
public DoelkaartenIndex()
{
// MetadataFor(doc)["Raven-Entity-Name"].ToString() == "Doelkaarten"
Map = items => from item in items
where MetadataFor(item)["Raven-Entity-Name"].ToString() == "Doelkaarten"
select new {Id = item.ItemId, Name = item.Title};
}
}
In the Index it is translated in the "Maps" field to:
docs.Items
.Where(item => item["#metadata"]["Raven-Entity-Name"].ToString() == "Doelkaarten")
.Select(item => new {Id = item.ItemId, Name = item.Title})
A query on the index never gives results.
If the Maps field is manually changed to the code below it works...
from doc in docs
where doc["#metadata"]["Raven-Entity-Name"] == "Doelkaarten"
select new { Id = doc.ItemId, Name=doc.Title };
How is it possible to define in code the index that gives the required result?
RavenDB used: RavenHQ, Build #961
UPDATE:
What I'm doing is the following: I want to use SharePoint as a CMS, and use RavenDB as a ready-only replication of the SharePoint list data. I created a tool to sync from SharePoint lists to RavenDB. I have a generic type Item that I create from a SharePoint list item and that I serialize into RavenDB. So all my docs are of type Item. But they come from different lists with different properties, so I want to be able to differentiate. You propose to differentiate on an additional property, this would perfectly work. But then I will see all list items from all lists in one big Items collection... What would you think to be the best approach to this problem? Or just live with it? I want to use the indexes to create projections from all data in an Item to the actual data that I need.
You can't easily change the name of a collection this way. The server-side will use the Raven-Entity-Name metadata, but the client side will determine the collection name via the conventions registered with the document store. The default convention being to use the type name of the entity.
You can provide your own custom convention by assigning a new function to DocumentStore.Conventions.FindTypeTagName - but it would probably be cumbersome to do that for every entity. You could create a custom attribute to apply to your entities and then write the function to look for and understand that attribute.
Really the simplest way is just to call your entity Doelkaarten instead of Item.
Regarding why the change in indexing works - it's not because of the switch in linq syntax. It's because you said from doc in docs instead of from doc in docs.Items. You probably could have done from doc in docs.Doelkaartens instead of using the where clause. They are equivalent. See this page in the docs for further examples.
Suppose I have a class Customer that is mapped to the database and everything is a-ok.
Now suppose that I want to retrieve - in my application - the column name that NH knows Customer.FirstName maps to.
How would I do this?
You can access the database field name through NHibernate.Cfg.Configuration:
// cfg is NHibernate.Cfg.Configuration
// You will have to provide the complete namespace for Customer
var persistentClass = cfg.GetClassMapping(typeof(Customer));
var property = persistentClass.GetProperty("FirstName");
var columnIterator = property.ColumnIterator;
The ColumnIterator property returns IEnumerable<NHibernate.Mapping.ISelectable>. In almost all cases properties are mapped to a single column so the column name can be found using property.ColumnInterator.ElementAt(0).Text.
I'm not aware that that's doable.
I believe your best bet would be to use .xml files to do the mapping, package them together with the application and read the contents at runtime. I am not aware of an API which allows you to query hibernate annotations (pardon the Java lingo) at runtime, and that's what you would need.
Update:
Judging by Jamie's solution, NHibernate and Hibernate have different APIs, because the Hibernate org.hibernate.Hibernate class provides no way to access a "configuration" property.