I want to know how to write "Intercepting Filter Pattern" like Java's servlet filter in Flex.
And I want to insert it into the classes which have a role of server communicating.
Please show me any sample codes if any...
Create a class which will play a role of connector between your program and server. Put there event listener for server events. Create a constant types for different types of events that server could send to your program. Put a switch into event listener that receive these events, and re dispatch them to the specific places, depending on which type of the event it was.
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I have a PASOE Business Class Entity setup as a Web Service. I'm trying to determine how to create a custom header that will allow me to pass in a hashed token. Is this something that I need to upgrade to 11.7.4 for DOH(OpenEdge.Web.DataObject.DataObjectHandler)? Or is this something that I simply add into a method that's defined in the class? Apologies, for the lack of code to illustrate my situation, but I'm not sure where to begin.
If you're using a Business Entity with the web transport then you're using the DOH, and the below applies. If you're using the rest transport then you are not using the DOH, and are more limited in your choices.
There is doc available on the DOH at https://documentation.progress.com/output/oe117sp/index.html#page/gssp4/openedge-data-object-handler.html - it's for 11.7.4 but largely applies to all versions (that is, from 11.6.3+). This describes the JSON mapping file, which you'll need to create an override to the default, generated one.
If you want to use the header's value for all operations, then you may want to use one of the DOH's events. There's an example of event handlers at https://github.com/PeterJudge-PSC/http_samples/blob/master/web_handler/data_object_handler/DOHEventHandler.cls ; you will need to start that handler in a session startup procedure using new DOHEventHandler() (the way that code is written is that it makes itself a singleton).
You can now add handling code for the Invoking event which fires before the business logic is run.
If you want to pass the header value into the business logic you will need to
Copy the generated mapping file <service>.gen to a <service.map> , in the same folder. "gen" files are generated and will be overwritten by the tooling
In the .map file, add a new arg entry. This must be in the same order as the parameters to the BE's method.
The JSON should look something like the below. this will read the value of the header and pass it as an input parameter into the method.
{ "ablName": "<parameter_name>",
"ablType": "CHARACTER",
"ioMode": "INPUT",
"msgElem": {"type": "HEADER", "name": "<http-header-name>"}
}
Hi I have a question about symfony application architecture,
In my application I create different user, but when a user is created, updated, deleted, or his picture change, I need to do some action.
What is the best way to do this ? I excluded to do this on a controller action. There is 2 others solutions :
Create differents events like user.created, user.updated, ... And dispatch it on the controller action and make different listener to do the different action like MailListener (for user.created) TaskListener (for user.created) for add a task.
Use a service like UserManager and on this service have a method like userCreated() and on this method call differents actions like sendMailOnCreated, addTaskOnCreated for example.
For you what is the best method ?
For me, your first solution is the best one. It's clearly a use case for the Event component. It will be easier to maintain and more readable.
Moreover, if you need to add more listener you just need to create another one and bind it to your event. You don't need to modify your controller anymore.
Is there a way to add/implement custom logic for BasketAddProductBehaviour configuration value different from DisallowRepeats, MergeQuantities and AllowRepeats (https://support.intershop.com/kb/index.php/Display/2809G2#Concept-BasketHandlingandCheckout-Introduction)?
For example add logic that only one product from one catalog can be added to basket?
Tnx
Starting with IS 7.6 add to basket functionality is implemented as chain of so called handler classes. Each handler class fulfills a particular purpose and is wired to the chain by the Java Extension Point mechanism of Intershop ICM. The com.intershop.component.basket.orm.internal.handlers.BehaviorHandler controls the add-to-basket behavior. This handler can be replaced by another implementation.
I have a tree-like structure with a couple of entities: a process is composed of steps and a step may have sub-processes. Let's say I have 2 failure modes: abort and re-do. I have tree traversal logic implemented that cascades the fail signal up and down the tree. In the case of abort, all is well; abort cascades correctly up and down, notifying its parent and its children. In the case of re-do, the same happens, EXCEPT a new process is created to replace the one that failed. Because I'm using the DataMapper pattern, the new object can't save itself, nor is there a way to pass the new object to the EntityManager for persistence, given that entities have no knowledge of persistence or even services in general.
So, if I don't pass the EntityManager to the domain layer, how can I pick up on the creation of new objects before they go out of scope?
Would this be a good case for implementing AOP, such as with the JMSAopBundle? This is something I've read about, but haven't really found a valid use case for.
If I understand your problem correctly (your description seems to be written a bit in a hurry), I would do the following:
mark your failed nodes and your new nodes with some kind of flag (i.e. dirty flag)
Have your tree iterator count the number of failed and new nodes
Repeat tree-iteration / Re-Do prcocess as often as you want, until no more failed or new nodes are there that need to be handled
I just found a contribution from Benjamin Eberlei, regarding business logic changes in the domain layer on a more abstract level: Doctrine and Domain Events
Brief quote and summary from the blog post:
The Domain Event Pattern allows to attach events to entities and
dispatch them to event listeners only when the transaction of the
entity was successfully executed. This has several benefits over
traditional event dispatching approaches:
Puts focus on the behavior in the domain and what changes the domain triggers.
Promotes decoupling in a very simple way
No reference to the event dispatcher and all the listeners required except in the Doctrine UnitOfWork.
No need to use unexplicit Doctrine Lifecycle events that are triggered on all update operations.
Each method requiring action should:
Call a "raise" method with the event name and properties.
The "raise" method should create a new DomainEvent object and set it into an events array stored in the entity in memory.
An event listener should listen to Doctrine lifecycle events (e.g. postInsert), keeping entities in memory that (a) implement events, and (b) have events to process.
This event listener should dispatch a new (custom) event in the preFlush/postFlush callback containing the entity of interest and any relevant information.
A second event listener should listen for these custom events and trigger the logic necessary (e.g. onNewEntityAddedToTree)
I have not implemented this yet, but it sounds like it should accomplish exactly what I'm looking for in a more automated fashion that the method I actually implemented.
I am creating a mobile app that will connect to a zendamf implementation to retrive certain information to store and display to the user.
There are multiple php classes on the gateway to handle things like users, Orders, Products etc.
Therefore I would have a package called remotehandler with classes under it, remotehandler.orders remotehandler.product, remotehandler.users. Which would mean for each class I could do the following:
instead of creating a connection for each type of call I want to make lots of times I was thinking that it might be better to create a wrapper class for each call family I.E
Users
createUser - calls a php function to create the user
DeleteUser
UpdateUser
after some searching I came accross this post
http://flexdevtips.blogspot.com/2009/05/using-flex-and-amfphp-without-services.html
which shows how to deal with netconnection in code. but it is written if you are planning on making a single call.
Does anyone have any ideas or example on how I could turn this in to a class that would allow me to specific different source(php class functions).
Thanks
JaChNo
Simply expose a property on your Class (let's call it source) as a getter/setter pair that, when set, changes the source of the RemoteObject.
However, I find it is better to have a different Service Class for each return type I expect, because I can then mock the service and just drop in the mock when I am working on things that don't require a live connection to the database (such as skinning).