Using MVC framework with LCCS

I'm developing a project in PureMVC and seperate skin classes.
Now there are a few 'view' components available in the lccs sdk, but when I use
them they require data far away from the skin. The approach we made in the project
is far from simple but extremely oop based and it's not very nice to use the
standard components in the sdk.
When looking to the WebcamSubscriber for instance, I would like to use basic netstreams in the
skin with live streams. Is there a simple way to get the netstream out of the streamManager
in the sdk? Or do I need to pull apart the WebcamSubscriber and seperate the code?
Thanks, Florus

Ok, sorry for my vague question.
What I'm trying to do is, creating a skin which has got a minimized amount of intelligent code.
To show a webcam there should be only a videocomponent for instance.
That videocomponent can handle netstreams which are created in our framework.
At the moment we are using all the components in the sdk like WebcamSubscriber, etc for rapid prototyping.
But that component needs a lot of data related references like connectsession, etc which I don't like to pass on
to a skin component.
So, We've looked into the WebcamSubscriber yesterday and found out that the streammanager is indeed the model
layer for the WebcamSubscriber but that it is only meta data. The actual netstream used inside the WebcamSubscriber
is build up on the meta data out of the streammanager. So there's no hard connection between netstreams and streamdescriptors,
if I'm correct?
Then we can split most of the code inside WebcamSubscriber and divide the blocks over our framework. And pass
netstreams to the skin component, which are created in the framework, I would think?
I hope you understand what I'm trying to achieve, and maybe you've got ideas or advices.
Thanks, Florus

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Must I use spring Framework with JSF2 and Hibernate?

Hi all,
I'm starting to develop a web portal and I would use JSF2 and Hibernate.
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For Ram, do you mean that JSF2 isn't a MVC framework with your reply?
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2) JSF2 and Spring;
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Edited by: Filippo Tenaglia on 20-giu-2011 14.16

Using Entity Framework with SQL Azure - Reliability

(This is a cross post from http://stackoverflow.com/questions/5860510/using-entity-framework-with-sql-azure-reliability since I have yet to receive any replies there)
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catch
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public Product GetProductFromDB(int productID)
var retryPolicy = new RetryPolicy<SqlAzureTransientErrorDetectionStrategy>(5);
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The latest solution above is described as ahttp://blogs.msdn.com/b/appfabriccat/archive/2010/10/28/best-practices-for-handling-transient-conditions-in-sql-azure-client-applications.aspx Best Practices for Handling Transient Conditions in SQL Azure Client
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Any good suggestions to this issue?

Maybe some usefull posts
http://blogs.msdn.com/b/appfabriccat/archive/2010/12/11/sql-azure-and-entity-framework-connection-fault-handling.aspx
http://geekswithblogs.net/iupdateable/archive/2009/11/23/sql-azure-and-entity-framework-sessions-from-pdc-2009.aspx

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For example...
class Band
public string BandName { get; set; }
public string BandCity { get; set; }
public List<BandRecording> RecordingsList { get; set; }
class BandRecording
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public string Description { get; set; }
In my code behind for this report, I am using Entity Framework to pull the data. Just pulling information for one band...
using (RockEntities re = new RockEntities())
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b.BandCity,
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}).FirstOrDefault();
OK, now I start moving to the data to class I have defined...
Band b = new Band();
b.RecordingsList = new List<BandRecording>();
b.BandName = bandinfo.BandName;
b.BandCity = bandinfo.BandCity;
foreach(var Recording in bandinfo.Recordings)
BandRecording br = new BandRecording();
br.Year = Recording.Year;
br.Description = Recording.Description;
b.RecordingsList.Add(br);
Since Crystal Supports IEnumerable, I create a list to hold the main record (although I am only reporting on one band)...
List<Band> lb = new List<Band>();
lb.Add(lb);
ReportDocument rd = new ReportDocument();
rd.Load("BandReport.rpt");
rd.SetDataSource(lb);
I have put the Band info in the Report Header section. This is all working fine. In the details section I would like to put the Band Recording info. I haven't figured out how to do this. I have put the fields in the Details section, but how do I tell the details section to use the inner List<BandRecordings>?
Any help would be greatly appreciated.

Only way I can see of doing this would be to place emprty formulas into the section. The populate the formula(s) with the required field;
Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.Shared
Public Class Form1
Inherits System.Windows.Forms.Form
Dim Report As New CrystalReport1()
Dim FormulaFields As FormulaFieldDefinitions
Dim FormulaField As FormulaFieldDefinition
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FormulaFields = Report.DataDefinition.FormulaFields
FormulaField = FormulaFields.Item(0)
FormulaField.Text = "[formula text]"
CrystalReportViewer1.ReportSource = Report
End Sub
Ludek
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Got Enhancement ideas? Try the [SAP Idea Place|https://ideas.sap.com/community/products_and_solutions/crystalreports]

How to use online Files with LCCS FileManager

Hi,
I'm discovering LCCS and the FileManager.
I would like to use images already uploaded on my server with the FileManager. But i'm don't sure if i have to use "download" or "upload" methods to do it. I don't want to use the "browse()" method, the files have to be loaded from the server to the FileManager when the application starts. Can you give me some examples to do it?
Thanks,
(I'm french please, use simple words ).

http://www.google.com/#sclient=psy-ab&hl=en&q=convert+mxf+avi&oq=convert+mxf+avi&aq=f&aqi= g-v4&aql=&gs_l=hp.3..0i15l4.4835.9343.0.12811.15.13.0.2.2.0.168.1138.11j2.13.0...0.0.EDKQ8 U_mDpc&pbx=1&bav=on.2,or.r_gc.r_pw.,cf.osb&fp=e3a93c99a6099aba&biw=1905&bih=701

How to we use Tiles Framework with ADF Faces ?

Hello Every body,
Can anyone tell me whether We mix Tiles framework of Struts, and ADF Faces Framework?
I 've found that we can mix JSF and Tiles, but can we use ADF Faces and Tiles together?
Waiting for your answer!
Thanking you ,
Samba.

Dear Experts,
Please help me !
As I could not get enough help from you masters,
I set out to do on my own, hoping that at some time you would come to my rescue.
I designed a simple jspx page SiteLayout.jspx whose code is given below:
<?xml version='1.0' encoding='UTF-8'?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.0"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:af="http://xmlns.oracle.com/adf/faces"
xmlns:afh="http://xmlns.oracle.com/adf/faces/html"
xmlns:c="http://java.sun.com/jstl/core"
xmlns:tiles="http://jakarta.apache.org/struts/tags-tiles">
<jsp:output omit-xml-declaration="true" doctype-root-element="HTML"
doctype-system="http://www.w3.org/TR/html4/loose.dtd"
doctype-public="-//W3C//DTD HTML 4.01 Transitional//EN"/>
<jsp:directive.page contentType="text/html;charset=UTF-8"/>
<f:view>
<af:document>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<title>SiteLayout</title>
</head>
<body>
<h:form binding="#{backing_SiteLayout.form1}" id="form1">
<af:table id="PageLayout" width="100%" >

<f:subview id="siteview">
<tiles:insert definition="siteLayoutDef">
<af:table id="headertable" width="100%">
<tr>
<td width="100%" colspan="2">
<f:subview id="header">
<tiles:insert attribute="header"/>
</f:subview>
</td>
</tr>
<tr>
<td width="100%" colspan="2">
<f:subview id="topview">
<tiles:insert attribute="topmenu"/>
</f:subview>
</td>
</tr>
<tr>
<td width="100%" colspan="2">
<f:subview id="navigationview">
<tiles:insert attribute="navigationbar"/>
</f:subview>
</td>
</tr>
<tr>
<td width="30%">
<f:subview id="leftview">
<tiles:insert attribute="leftmenu"/>
</f:subview>
</td>
<td width="70%">
<f:subview id="contentview">
</f:subview>
<tiles:insert attribute="content"/>
</td>
</tr>
<tr>
<td width="100%" colspan="2">
<f:subview id="footerview">
<tiles:insert attribute="footer"/>
</f:subview>
</td>
</tr>
</af:table>
</tiles:insert>
</f:subview>
</af:table>
</h:form></body>
</html>
</af:document>
</f:view>

</jsp:root>
My SiteLayout.jspx defines the layout of the pages on my Web application.
My Home page is this:
<?xml version='1.0' encoding='UTF-8'?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.0"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:afc="http://xmlns.oracle.com/adf/faces/webcache"
xmlns:af="http://xmlns.oracle.com/adf/faces"
xmlns:afh="http://xmlns.oracle.com/adf/faces/html"
xmlns:afi="http://xmlns.oracle.com/adf/industrial/faces"
xmlns:graph="/webapp/graph.tld"
xmlns:c="http://java.sun.com/jstl/core"
xmlns:tiles="http://jakarta.apache.org/struts/tags-tiles">
<jsp:output omit-xml-declaration="true" doctype-root-element="HTML"
doctype-system="http://www.w3.org/TR/html4/loose.dtd"
doctype-public="-//W3C//DTD HTML 4.01 Transitional//EN"/>
<jsp:directive.page contentType="text/html;charset=UTF-8"/>
<f:view>
<af:document>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<title>Home</title>
</head>
<body>

<h:form binding="#{backing_Home.form1}" id="form1">
<tiles:insert definition="siteLayoutDef" flush="false">
<tiles:put name="header" value="/Header.jspx" />
<tiles:put name="footer" value="/Footer.jspx" />
<tiles:put name="leftmenu" value="/LeftMenu.jspx" />
<tiles:put name="content" value="/Content.jspx" />
<tiles:put name="header" value="/TopMenu.jspx" />
<tiles:put name="footer" value="/NavigationBar.jspx" />
</tiles:insert>
</h:form>
</body>
</html>
</af:document>
</f:view>

</jsp:root>
My <tiles-defs> page is this:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE tiles-definitions PUBLIC "-//Apache Software Foundation//DTD Tiles Configuration 1.1//EN" "http://jakarta.apache.org/struts/dtds/tiles-config_1_1.dtd">
<tiles-definitions>
<definition name="tiles-defs"/>
<definition name="siteLayoutDef" path="/SiteLayout.jspx">

<put name="header" value="/header.jspx" />
<put name="footer" value="/footer.jspx" />
<put name="content" value=""/>
<put name="topmenu" value="/TopMenu.jspx"/>
<put name= "leftmenu" value="/LeftMenu.jspx"/>
<put name="navigationbar" value="/NavigationBar.jspx"/>
</definition>
</tiles-definitions>
My Web.xml is this:
<?xml version = '1.0' encoding = 'UTF-8'?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee">
<description>Empty web.xml file for Web Application</description>
<context-param>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>server</param-value>
</context-param>

<context-param>
<description>Tiles configuration
definition files and a listener need to be defined.
the listener will initialize JspTilesViewHandlerImpl with tiles definitions.
</description>
<param-name>tiles-definitions</param-name>
<param-value>/WEB-INF/tiles-defs.xml</param-value>
</context-param>
<context-param>
<param-name>javax.faces.CONFIG_FILES</param-name>
<param-value>/WEB-INF/faces-config.xml, /WEB-INF/tiles-defs.xml</param-value>
</context-param>
<context-param>
<param-name>javax.faces.DEFAULT_SUFFIX</param-name>
<param-value>.jspx</param-value>
</context-param>
<context-param>
<param-name>oracle.adf.view.faces.ALTERNATE_VIEW_HANDLER</param-name>
<param-value>
org.apache.myfaces.tomahawk.application.jsp.JspTilesViewHandlerImpl
</param-value>
</context-param>
<filter>
<filter-name>adfFaces</filter-name>
<filter-class>oracle.adf.view.faces.webapp.AdfFacesFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>adfFaces</filter-name>
<servlet-name>Faces Servlet</servlet-name>
</filter-mapping>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>resources</servlet-name>
<servlet-class>oracle.adf.view.faces.webapp.ResourceServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>/faces/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>resources</servlet-name>
<url-pattern>/adf/*</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>35</session-timeout>
</session-config>
<servlet>
<servlet-name>Tiles Servlet</servlet-name>
<servlet-class>
org.apache.struts.tiles.TilesServlet
</servlet-class>
<init-param>
<param-name>definitions-config</param-name>
<param-value>/WEB-INF/tiles-defs.xml</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
<mime-mapping>
<extension>html</extension>
<mime-type>text/html</mime-type>
</mime-mapping>
<mime-mapping>
<extension>txt</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
</web-app>
The Error I'm getting is :
IllegalStateException :No ADFRenderingContext;
What happened?
Where did I go wrong?
could you please help me?
Thanking you in advance,
Waiting for your response,
Samba.
Message was edited by:
saasira
Message was edited by:
saasira
Message was edited by:
saasira

How to Use Ajax Framework with Netbean6.0

Hello Friends....
I am using netbeans IDE to develop Java enabled web application
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Please somebody help me.........

vasim_saiyad2000 wrote:
Yes My Friend in the past i made a web application and all html, jsp and java code was written in notepad.
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How to use MVC AntiForgeryToken with partial views

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Can I use Text Layout Framework with Flex 3 SDK?

Greetings,
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Can I use the framework with flex sdk 3 and therefore flash player 9?
Best Regards
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Hi all
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Should I use a MVC framework for an large RIA application

The book of "Adobe Flex 3 Training from the Source" does not
talk about any MVC frameworks in its
eCommerce example. I think Flex's events, functions, and mx
components are MVC already. Do they have to be in separate file to
call them MVC? I do not find that core Flex is harder to read and
understand than using a MVC framework. I think using the MVC
framework would hurt the performance because too many additional
events are dispatched. Any comments?

MVC is one design pattern that is pretty darn useful for a
lot of applications, IMHO. There are frameworks that more or less
force you to think in MVC pattern terms, like Cairngorm and
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an overall design pattern of model, view, controller. However, it
sure can make it easier if you're doing a large project. The book
you're talking about is a good example. They don't use a framework
but they have tried to use a form of MVC in the way that they
implement all the components to ensure things are loosely coupled.
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many thousands of events occurring all the time in Flex that you
might actually enhance performance if you take more control by
using custom events of your own creation within a well designed
framework.
I'm a fan of the Mate because I get it and it doesn't impose
a strict structure like Cairngorm. I don't have a whole lot of
experience with OOP (though I'm sure getting it thanks to this
forum). Many others have their own opinions and will surely
recommend other frameworks. However, the bottom line is that if
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to at least have a conceptual framework approach in your mind, if
not part of the code.
Here's a video intro to Mate
http://tinyurl.com/mateintro

MVC 4 Using Entity Framework How to save Images in Database

Iam Beginner to
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http://forums.asp.net/
You should post to the MVC section of above forum first.

Regarding RESTful WEB SERVICES with SPRING MVC Framework

Hi,
Can anyone explain me about RESTful WEB SERVICES with SPRING MVC Framework .
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Thanks
Venkat Jalli

Hi Manoj,
I am also new to Spring MVC portlet. But, I tried to see the difference between sample spring portlet and your code below. Issue that I can see is, in your code, you have not mapped your servlet container with portlet application. So, in theory, your servlet containder do not know that you have a servlet. Let me try to explain from sample portlet,
In portlet.xml, they have something like below:-
<portlet-name>swf-booking-mvc</portlet-name>
<display-name>Spring Webflow Booking MVC</display-name>
<portlet-class>org.springframework.web.portlet.DispatcherPortlet</portlet-class>
And in web.xml, they have below:-
<servlet-name>swf-booking-mvc</servlet-name>
<servlet-class>org.apache.pluto.core.PortletServlet</servlet-class>
<init-param>
<param-name>portlet-name</param-name>
<param-value>swf-booking-mvc</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
This web.xml is for Pluto portlet container and there will something similar for Weblogic portal as well that I am trying to figure out :(
Thanks,
Sanjeev

What is your strategy for form validation when using MVC pattern?

This is more of a general discussion topic and will not necessarily have a correct answer. I'm using some of the Flex validator components in order to do form validation, but it seems I'm always coming back to the same issue, which is that in the world of Flex, validation needs to be put in the view components since in order to show error messages you need to set the source property of the validator to an instance of a view component. This again in my case seems to lead to me duplicating the code for setting up my Validators into several views. But, in terms of the MVC pattern, I always thought that data validation should happen in the model, since whether or not a piece of data is valid might be depending on business rules, which again should be stored in the model. Also, this way you'd only need to write the validation rules once for all fields that contain the same type of information in your application.
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Thanks for your answer, JoshBeall. Just to clarify, you would basically create a subclass of e.g. TextInput and add the validation rules to that? Then you'd use your subclass when you need a textinput with validation?
Anyway, I ended up building sort of my own validation framework. Because the other issue I had with the standard validation was that it relies on inheritance instead of composition. Say I needed a TextInput to both check that it doesn't contain an empty string or just space characters, is between 4 and 100 characters long, and follows a certain pattern (e.g. allows only alphanumerical characters). With the Flex built in validators I would have to create a subclass or my own validator in order to meet all the requirements and if at some point I need another configuration (say just a length and pattern restriction) I would have to create another subclass which duplicates most of the rules, or I would have to build a lot of flags and conditional statements into that one subclass. With the framework I created I can just string together different rules using composition, and the filter classes themselves can be kept very simple since they only need to handle a single condition (check the string length for instance). E.g. below is the rule for my username:
library["user_name"] = new EmptyStringFilter( new StringLengthFilter(4,255, new RegExpFilter(/^[a-z0-9\-@\._]+$/i) ) );
<code>library</code> is a Dictionary that contains all my validation rules, and which resides in the model in a ValidationManager class. The framework calls a method <code>validate</code> on the stored filter references which goes through all the filters, the first filter to fail returns an error message and the validation fails:
(library["user_name"] as IValidationFilter).validate("testuser");
I only need to setup the rule once for each property I want to validate, regardless where in the app the validation needs to happen. The biggest plus of course that I can be sure the same rules are applied every time I need to validate e.g. a username.
The second part of the framework basically relies on Chris Callendar's great ErrorTipManager class and a custom subclass of spark.components.Panel (in my case it seemed like the reasonable place to put the code needed, although perhaps extending Form would be even better). ErrorTipManager allows you to force open a error tooltip on a target component easily. The subclass I've created basically allows me to just extend the class whenever I need a form and pass in an array of inputs that I want to validate in the creationComplete handler:
validatableInputs = [{source:productName, validateAs:"product_name"},
                     {source:unitWeight, validateAs:"unit_weight", dataField:"value"},
               {source:unitsPerBox, validateAs:"units_per_box", dataField:"value"},
                    {source:producer, validateAs:"producer"}];
The final step is to add a focusOut handler on the inputs that I want to validate if I want the validation to happen right away. The handler just calls a validateForm method, which in turn iterates through each of the inputs in the validatableInputs array, passing a reference of the input to a suitable validation rule in the model (a reference to the model has been injected into the view for this).
Having written this down I could probably improve the View side of things a bit, remove the dependency on the Panel component and make the API easier (have the framework wire up more of the boilerplate like adding listeners etc). But for now the code does what it needs to.

Which is more in line with MVC architecture with Struts?

Hello all
When using the MVC Model 2 architecture, the JSP's are the view, servlets the control, and the beans are the model. If we say that a control method should represent a specific use case, then in theory, you should be able to call the control method from any interface to request that a specific use case be performed, whether it be over a simple socket connection receiving bytes, or using HTTP.
However, when using jsp's/servlets, if thr servlet is the control, then it means that the interface must make the request using HTTP and contain a request/response object. But supposing you wanted to change the interface to request the same use case, but makes an http request but supplying XML (instead of several request parameters) which contains the request data, you cannot then simply use the same servlet use-case.
So what is the solution? If you write another servlet to handle the different request format (XML) it copies a lot of the control code from the other servlet which is a bit messy. Or, would it be correct to write a seperate Controller class (standard Java class), which would contain a set of related use cases, and are called by the servlet. Each use case (which would be a method call in the controller class), would take in its parameter list the exact type and data it needs to complete the use case. In this case the servlets are simply pulling data from the HttpRequest object, converting them to the correct java type to be passed to the controller class you create.
This introduces an extra layer; the servlet now sits between the request interface and control. It means that the control methods can be called from any type of interface, but is it the right way of doing things, and how would the new control objects be held in the servlet?
Please could someone give their opinion on which they think is the best way of architecting this?
Many thanks,
Shaun.

Shaun,
I'm going through the same issues as I try to build my own MVC framework. Struts is useful, but does not cover everything. If you're interested, I've found that the book "Core J2EE Patterns - Best Practices and Design Strategies" by Alur, Crupi and Malks is very helpful. It contains design patterns for all the various tiers. It does not describe a framework, just a set of patterns from which you can pick and choose.
In the example you describe, one of the applicable patterns is the "Session Facade" which is basically a high-level business interface. The goal is to hide the complexity of the entire business API from the client. The book recommends each facade to correspond to a related set of use cases. e.g. methods in one facade could include OpenAccount, CloseAccount, GetBalance etc. Implementation would be Java classes.
This facade should be independent of the request protocol and could be used for HTTP, by a Java application, by a web service etc. Usually the facade classes would be located close to the business objects to minimize network delay and traffic.
In your example, the controller servlet (Struts Action) would invoke services from the Session Facade.
You're right about this introducing an extra layer. Depending on your present and future needs, you can end up with others such as abstracting the persistence layer. The trade-off is between up-front effort and future flexibility.
You ask how to reference the new objects. In my case, the initialization servlet calls a factory class method to get references to the facades. These references are stored in an application-specific object that is added as a ServletContext attribute for use by other controller servlets.
I know this doesn't fully answer your question, but hopefully it helps a little.

Using MVC framework with LCCS

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