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• Where to put the java code - best practices

  Hello. I work with the Jdeveloper 11.2.2. I'm trying to understand the best practices for where to put the code. After reviewing the http://docs.oracle.com/cd/E26098_01/web.1112/e16182.pdf, it seemed that request module was the preferred location (although many examples in the pdf file reside in the main methods). After some time of coding, if, I noticed that there was a certain libraries imported and wondered if this would impact performance.
  
  I looked at the articles published on the forum, in particular Re: programmatically access the method of service (customer interface) . This link mentions for access to the code a bean of support - and the bulk of the recommendations seem to be using the data control to drag to the Joint Strike Fighter, or use the links to access code.
  
  My interest lies in where to put the java code in the first place; In the view object, entity object, and... other Am, backing bean object?
  
  I can describe several guess better know where to put the code and the advantages and disadvantages:
  
  1. in the application module
  Benefits: Central location for code makes development and support easier as there are not multiple access points. Kinda like a data control centralizes the services, the module of the application can act as a conduit for the different parts of the code you have in your model objects.
  Cons: Everything in one place means that the module of the application becomes bloated. I don't know how the memory works in java - if the app module has tons of different libraries are all called when even a method of re - run a simple query is called? Memory of pigs?
  
  2. write the code in the objects it affects. If you write code that accesses a view object, write it to a display object. Then make it visible for the customer.
  benefits: the code is accessible through ducts less (for example, I expect that if you call the module from the application of a JSF backing bean, then the module of the application calls the view object, you have three different pieces of code-)
  CONT: the code gets spread, more difficult to locate etc.
  
  I would greatly appreciate your thought on the issue.
  
  
  Kind regards
  Stuart
  
  Published by: Stuart Fleming on May 20, 2012 05:25
  
  Published by: Stuart Fleming on May 20, 2012 05:27

  First point here is when you say 'where to put the code of java' and you're referring to ADF BC, the point is that you put 'code of java business logic' in the ADF business components. Of course it is very good to have the Java code in the ViewController layer that covers the user interface layer. Just don't put the business logic in the user interface layer and don't put no logical user interface in the model layer. In your 2 examples you seem to consider the ADF BC layer only, so I'll assume that you're not only serious logic java code.

  Meanwhile, I'm not keen on best practices in the term that people are following best practices without thinking, usually best practices come with conditions and forget to apply. Fortunately you do not here that you have thought through the pros and cons of each (nice work).

  Anyway, back on topic and turn off my soap box, regarding where to put your code, my thoughts:

  (1) If you have only 1 or 2 methods set in the AppModuleImpl

  (2) If you have hundreds of methods, or there is that a chance #1 above will turn into #2, divide the code between the AppModuleImpl, the ViewImpl and the ViewRowImpls. Why? Because your AM will become overloaded with hundreds of methods making it unreadable. Put the code where it should logically go instead. Methods that operate on a specific line of VO Approfondissez partner ViewRowImpl, methods that work across lines in a VO enter the ViewImpl and methods that work throughout your in the associated AppModuleImpl.

  To be honest that you never the option you choose, one thing I recommend as a best practice is to be consistent and document standard so not know your other programmers.

  BTW, it is not a question about loading a lot of libraries/imports in a class, it has no performance cost. However if your methods require a lot of class variables, then yes there will be a memory of the costs.

  On a side note, if you are interested in more ideas on how to create ADF applications properly think about joining the EMG "ADF", a forum which deals with ADF architecture, best practices (cough), deployment architectures free online and more.

  Kind regards

  CM.

• How to create programably InputComoboxListOfValues in java code

  12.1.3 jdev

  I'm trying to dynamically create InputComoboxListOfValues in the java code as follows.

  	RiLOV RichInputComboboxListOfValues = new RichInputComboboxListOfValues();
  	riLOV.setLabel (label);
  	riLOV.setId ("iclov" + ind);
  	riLOV.setVisible (true);
  	riLOV.setRendered (true);
  	riLOV.setSimple (true);
  	riLOV.setContentStyle("text-transform:uppercase;");
  	riLOV.setValue (defaultValue);
  	riLOV.setPopupTitle ("search dialog box");
  	riLOV.setAutoSubmit (true);

  I also need to

  riLOV.addLaunchPopupListener (myLaunchPopupListener);

  riLOV.addReturnPopupListener (myReturnPopupListener);

  My question is how to build myLaunchPopupListener /myReturnPopupListener

  Thank you.

  riLOV.addLaunchPopupListener (myLaunchPopupListener);

  riLOV.addReturnPopupListener (myReturnPopupListener);

  Instead of addX() methods, you can use the setX() methods that use the MethodExpression as parameter.

  Example for MethodExpression: Blog in Java Evangelist John Yeary: JSF 2.x tip of the day: creation by programming MethodExpression EL

  But, af:inputListOfValues / af:inputComboboxListOfValues components require a very complex model to activate filtering etc so this can be very difficult to implement correctly if they are not supported by the link layer.

  From here you can download components done face ADF demo and see how this can be implemented: Application Development Framework downloads

  BTW,

  	riLOV.setContentStyle("text-transform:uppercase;");

  Of course, you know that this only display value in uppercase on your page and does not convert the value in the data model?

  Dario

• How to create a BPEL Process task using java code

  Hello
  
  I created a BPEL process (for creating task), in which my requirement is that I need to create a task based on some inputs and assign it to the user in partucular and then get out of this flow.
  
  earlier, I felt that I will use the human task activity. but when I use that task will be created in the same process and proceedings will be stuck on there until human intervention (the BPEL process waits for the result.).
  
  is it possible that I can use Java activity and create tasks from java code, 'I know how to assign a specific user task. Please tell me.
  Abhishek
  
  Published by: abhishek on April 25, 2011 12:42 AM

  Hi Abhishek
  1. you can try this alternative approach and it should work.

  2. basically, most of the BPEL process eventually auto generated Web services (.) WSDL). When we create a BPEL process, everything we do is give diagram of input, output schema and creates a bpel process with the default operation named as "process" in all the old versions as up to 11.2 SOA (and maybe before). BUT SOA 11.3 from, we can create a process BPEL, with our own WSDL and our own scheme. There is no restrictions like having only a single operation named 'process', etc.. In any case, what I mean is, each BPEL process ends up as a WebService, with entry and exit of the payloads of XSD.

  3. from the JDeveloper itself, locate the .wsdl for your BPEL process under the Workflow project. Create a new project of Proxy customer service Web and generate a customer for this wsdl Web service proxy. This will create you Service, Port and JAVA classes equivalent payload theoretically in your case taskpayload.xsd with these 4 items you have. Ignore the full blown the HumanTask which has all the system elements and attributes of a task of bpel. All you need is to undertake a task with your own payload data. Create a simple Client Java (EJB or Servlet later to make more flexible). In this Java client, retrieve the Service object in the proxy and port. Then instantiate the java class that represents the payload. Set 4 values you want and set the user name, etc. You may need some adjustments for the setting of the user. Then the port invoke otherwise (go your java object here).

  Sample code snippet
  prepare the message for BPEL of appeal; Define the fields that can not be null
  MyPayloadRequest myPayloadRequest = new MyPayloadRequest();
  myPayloadRequest.setInitiator("");
  myPayloadRequest.setTitle("");
  myPayloadRequest.setEmployeeName("");
  myPayloadRequest.setEmpContact("");

  web service client Get for BPEL receive point and call: first generate client proxy
  MyBPELPProcess_client_ep serviceClient = new MyBPELPProcess_client_ep();
  MyBPELPProces proxy = serviceClient.getNewMyBPELPProces_port ();
  proxy. Process (myPayloadRequest);

  Please note that you can also use the SOA workflow API and the Manager back call personalized for this first task classes. In this class, you can have the methods of the interceptor, which is called each time a task is initiated, saved, Submit, approve etc etc (all events essentially). This gives you access to all the objects in a workflow with full charge blown. So you can always get the data you pass above and in this custom class, the value of the user, date/time etc..

  It's just a different approach you can try.

  Thank you
  Ravi Jegga

• Creating java code of a class diagram JDeveloper

  I created a class diagram in JDeveloper 11.1.1.3.0. When I generated java code from the class diagram by right-clicking on the class diagram-> processing-> same diagram-> UML to Java, a .java file is generated with the attributes and getters/setters and also a .uml_cla file is generated. That's this .uml_cla file exactly and what is it? I also have a package.uml_pck file that was created 3 times. I got a lot of com.xxx.xxxx, and she made this file of package.uml_pck in 'com', 'xxx' and 'xxxx '. I have to keep all 3 of these files in my project?
  
  Another question related to this. When I change something in the representation of java of the class (i.e. a data type) diagram, it updates the .java file that is generated from the class diagram, and it also works the other feel... changing the .java file and the representation of java class schema changes. However, the class diagram that the code has been generated from does not change, or only the mysterious file .uml_cla I asked in the paragraph above.

  You don't need SDE - everything is integrated in the Modeler UML JDeveloper.
  From a UML class diagram, you can go to a Java class diagram.
  And from a Java class diagram you can go onto a diagram, UML - just right click and choose transform-> model only
  This will allow you to move from Java to conceptual UML diagram class.

  You can drag your java classes to the Java class diagram to get the Visual representation.

  The file that you see are probably just the files used by the diagrammer.

• Hang the reply Codes to the Java code

  Hello everyone. I created the java code for IOM 11.1.1.3.0, which essentially returns a Boolean value.
  
  Copy the following code returns true if executed without problem, it returns false if there is a problem that prevents the completion.
  
  My question is this: how to map the Boolean return to reflect the response code to the IOM. If the code returns 'true' I want the resource status of 'Configured', and if it returns 'false' I want the resource to a status of "Provisioning".
  
  Where should I go to connect back the code to answer IOM mapping?
  
  Thanks in advance!

  While creating an adapter, you have added task here.
  Did you have a mapping for the OUTPUT variable?

  Also in the task of process, have mapped OUT variable with the RESPONSE CODE tab integration of this task?

  under the tab "resources status management.

  Under the status of the object map tasks

• Error: the file is not a valid Java code file

  Hello

  IM new in the development of BB, so bad to describe my problem step by step:

  -First of all, had installed jdk-1_5_0_14-win, BlackBerry_JDE_4.6.0, j2sdk-1_4_2_18-win, Desktop manager 4.6

  -Open BB JDE, create a new workspace

  -Add a project HelloWorldDemo.jdp file (located in the sample folder)

  -Debug the application in the Simulator (9000-JDE) without any error

  -Construction of the project and generate the .axl and .cod files

  -Try to install this app (HelloWorldDemo.cod) in my device with error

  C:\Archivos programa\Research in Motion\BlackBerry JDE 4.6.0\samples\com\rim\samples\device\helloworlddemo>javaloader u load HelloWorldDemo.cod
  Charger Pocket RIM Wireless Java
  Copyright 2001 - 2007 Research In Motion Limited
  Connected
  HelloWorldDemo load error: the file is not a valid Java code file
  7832 bytes sent to ~ 15664 bps
  Disconnected

  -Also try to install the application with Desktop Manager and the .axl file, but show this message "a fatal error has occurred while updating your software to devices." Please try again ".

  My device is a Blackberry 8700

  Software: v4.1.0.351

  Help, please!

  Thank you!

  Thank you!! Problem solved.

• Java code in the expression editor

  The Java tab in the expression editor makes me think it should be possible to write a bunch of lines of code java, somehow but no matter what I try it always refused. The java code only I got to work was create a set command, and then write the right side a

  var x = something;

  statement. Since there is no try/catch, if, while, instructions etc. in the java tab, should not be possible to use somehow? And if so, what can they be used in (quite apparently the game is bad)?

  I use IPCC 4.5 with Premium license and I am able to write java code inside the set command.

  The java code must be writing in brackets {}; for example

  {

  try {}

  int i = 0;

  int result = 0;

  for (i = 0; i<>

  result = result + i;

  }

  return the result;

  } catch (Exception ex) {}

  Returns - 1;

  }

  }

  Hope this helps.

  Stefano

• How to kill a process of the system of java code.

  Hi,

  
  

  i need to kill or remove windows system process like cmd.exe from java code.

  as detached from end process in task mgr.
  

  i tried below code but its not removed.

  is there a better way we can do this.

  killing a system process from java code will create any issues?

  
   public static void main(String[] args) throws Exception {

   String[] cmd = { "cmd.exe" };
   Process p = Runtime.getRuntime().exec(cmd);
   p.destroy();
   }

  
  

  any suggestions or ideas are really appreciated.


  Thank you.

  


  The utility 'tasklist' will give you the same basic information in the Task Manager. You can always capture that and find the line (including the PID) of your application.

  Use your favorite search engine and look for "windows get the pid using java. You will find LOTS of other posts for this same issue.

• reuse Java code?

  Hello

  I need to use the same java method in jsp pages (templates).

  so I created an element of CS and I put all the common inside java code using the < %! % >

  Can I use < %@include = file "" % > to call this CS element and use the methods? "

  Because I think it does not with the < render: callelement...

  Kind regards

  Ghazi H.

  Hello

  What you are trying to do is a bad practice in my opinion and I recommend you to create a new library of classes (jar) and import the classes you need in the different models.

  It will be useful,

  Gerardo

• How to get the value on a model that is defined in the java code in email

  Hello

  I created a custom code and send email as well to custom component. I can send emails using the method:

  InternetFunctions.sendMailTo (EmailID, EmailTemplate, subject, cxt);

  But my problem is that I have to get a value in the model of "EmailTemplate" which are defined from java code. but I don't know how to get the value.

  I will highlight in the java code by using this code: binder.putLocal ("ErrorApproveRejectMsg", massegeBody);

  I'm trying to enhance the model using the code below, but not able to get.

  1 < $exec getValue ("#active", "ErrorApproveRejectMsg") $ >

  2 < $exec getValue ("#active", ErrorApproveRejectMsg) $ >

  3 < getValue ("ErrorApproveRejectMsg") $exec $ >

  4 < $exec getValue (ErrorApproveRejectMsg) $ >

  5 < getValue ("#local", ErrorApproveRejectMsg) $exec $ >

  6 < getValue ("#local", "ErrorApproveRejectMsg") $exec $ >

  7 < $ErrorApproveRejectMsg$ >

  8 < $exec ErrorApproveRejectMsg$ >

  Assuming that cxt will be your Service or execution context object

  You can do something like this

  DB. PutLocal ("ErrorApproveRejectMsg", "Error");

  cxt.setCachedObject ("DataBinder", db);

  PageMerger h = new PageMerger (db, cxt);

  cxt.setCachedObject ("PageMerger", h);

  InternetFunctions.sendMailTo (usersEmail, emailTemplate, emailSubject, cxt);

  where db is current databinder object, and you can put any variable custom in the workbook by using the putLocal method.

  Thank you

  Vikram

• Run query from java code

  Hi all

  I have a requirement in which I need to create a selection based on the parameter query that user input. If the query will include the parameter if its value is not null.

  Is it possible to add this query in the resource file?

  In case I want to execute java code, how can I call to run the query of theis?

  I tried result Long = ws.executeSQL (query.toString ());

  but it gives an error because executeSQL is for DML queries.

  Please suggest an approach.

  If you do not know the name of the column, you must use createResultSetSQL.

  Jonathan

  http://jonathanhult.com

• Configure the debug log in the custom in OIM 11 g java code

  Hello
  How to configure the debug log in the java code in 11g...
  
  CAN I love
  
  private static Logger logger = Logger.getLogger ("XXXXXX");
  
  If (logger.isDebugEnabled ()) {}
  Logger.Debug (logmsg);
  }

  11 g, I use the following log format:

  Private final static Logger LOGGER = Logger.getLogger (.class.getName () .toUpperCase ());

  Then in my code I use elements like this:

  LOGGER.log (Level.INFO, "DEBUG OUTPUT HERE");

  -Kevin

• Example of Java code to publish in Flex?

  I have Tomcat talking to Flex with BlazeDS, but the conversation is one of the ways.  Flex has to initialize it.

  I want to be able to publish to Flex from Java (in Tomcat).  There are fine examples of the code necessary to capture Flex and how to subscribe and everything, but I can't find excerpts from Java that show how we launch this conversation on this end.

  Can someone point me to some examples of code for this?

  Thank you!

  Hello

  Should have the URL: http://help.adobe.com/en_US/dataservicesjee/4.6/Developing/WS9d22440892c78ffa-3a437432122a 8558cdf - 8000Update.html

  Regarding the subscription of java, see how the consumer subscribe comes Flex (the source code for the consumer class is viewable in FB). You need to basically imitate in your java code. This means roughly the following manner:

  1 authenticate your self and make sure that this main user gets put on the FlexContext.

  2. create a command message to the subscription (with values that are appropriate as client id, etc.) and go to the MessageBroker.routeCommandToService (subscriptionCmd, null).

  Rohit

• Convert c# to Java code - Floating Point Arithmetic

  Convert c# to Java code - Floating Point Arithmetic
  
  Hello
  I need to write a c# equivalent in java code. The c# code includes functions perform mathematical calculations. The result of these functions must match exactly with the c# (especially precision) counterpart. Here's a function that requires an equivalent java
  
  Public Shared Function squareroot (string n1)
  {
  If ((n1 == null) |) (System.Convert.ToDouble (N1) < 0))
  {return null ;}
  else {}
  return (Math.Sqrt (System.Convert.ToDouble (n1))) System.Convert.ToDecimal. ToString();
  }
  }
  
  C# two data types - float (32-bit) and double (64-bit) floating-point. It also includes a more specific data type float called decimal (128-bit). The float and double are supposed to follow the standard IEEE 754 floating point standard, but precise figures are different. Double c# has 15-16 digits for precision while the equivalent of java has 53, right? (the IEEE standard reference).
  
  Does anyone have an idea on what java equivalent data types/libraries must be used such that the results correspond with double c# and decimal?
  
  Thank you & happy new year

  This has nothing to do with the IEEE 754 standard, because nothing in IEEE 754 specifies how many decimal places should be used when a value is converted to a string. Simply because the resolution is between 15 and 16 decimal places does not mean that there is always an exact representation of any number of IEEE 754 format to 16 decimal places. In your example, Java chooses to create two decimal places more than c# don't but I bet that this is not a general rule you can count!

  The whole concept of using strings to represent the number seems to be skewed. I don't really see the point. It is mind bogglingly slow and in my view it does nothing for you. You have not yet met the real problem yet! What happens when Java or c# decides to use scientific notation?

  In your situation I would like to change the program c# use 'double' rather than 'chain', then you would find that you get an almost perfect match to all time. I make this recommendation of much written spending year of algorithms in C, C++, c# and Java of signal processing.