Frames of data control and example of Servlet of Duncan Mill

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• Save data in several collections of data control

  Hello

  In another post (https://forums.oracle.com/message/11094155), I asked how to merge data from several collections and display it in a table. FrankNimphius gave me the right answer. I now have my table with merged data from my control of data collections. But now I have reverse request: the table must allow to insert new lines and to store the data in the model represented by all of these collections.

  I saw this blog https://blogs.oracle.com/jdevotnharvest/entry/how_to_add_new_adfand it is great, but works with a collectionModel, but the idea is exactly the same thing, just with several collectionModels in a parent one.

  The table is not lined with a collectionModel, it is bounded to a list < MyObject > in my managed bean, in order to control the integrated data to create/delete operations from the parent collection do not work.

  Another thing is: for me the model is a black box, I don't know anything about the model, I just know the datacontrol.

  Thank you!

  AAPDL

  Hello

  If you only have access to the data controls then it has no option to combine the two data sources in a single data control (for example, Pojo). Go with a suggested abstraction managed bean, the option I see is to expose a method in the managed bean that you can use to create a new empty - list entry. This then will be displayed as a blank line in the table after PPR.

  The trickiest part is later - when you submit or commit the new line - to manually create new lines in other iterators or update other data sources accordingly (for which you will need to know what information goes on what iterator control or data). If other data controls are not BC of the ADF, and then to persist new lines, you will need to explicitly call the methods exposed on the data controls. So what you basically generate is a managed implementation bean of a two-phase commit. And then there's the case of deletion to consider as well.

  Frank

• With the help of AMPA on non - WS Data Controls

  Hello community MAF .

  I'm developing an Application of MAF that consumes the REST API of WebCenter portal (which is based on the model of HATEOAS).

  I want to make powerful from scratch, including the following:

  -Offline mode (using the SQLite).

  -Persistence, of setting cache and synchronization using AMPA.

  Looks like it's not easier to apply directly on the REST API of WCP AMPA.

  The REST API of WCP is the result of a call of two steps:

  1) authenticate using BASIC authentication against http://Host/repos/api/resourceIndex for the utoken

  (2) use utoken as the URL parameter for the next call of REST for the specific service.

  I know that the Bus Service could be a possibility on the creation of a more simple REST on the WCP REST API, but is not an option right now because that is not easy to map.

  My questions are:

  (1) can we use AMPA on data controls in Java that will call internally to (DB in case of offline mode, REST by program in the case of online mode).

  (2) can define us manually in the persistenceMapping.xml?

  (3) is there anything else more easy to use wizards with HATEOAS base based Services?

  Thanks in advance

  Kind regards.

  Daniel,

  Why is it not service bus an option? You say 'not easy to map', but do the mapping in the MAF makes it not easier, it? the REST API of pressurization is not very easy to mobile, so this transformation to a more usable by using bus service API cost as a good idea for me. See also this article from the A-team.

  Answers to your questions:

  (1) Yes, this is the added value of nucleus of AMPA. You get a service generated the DTC Assistant classes, then you turn this class in a bean data control and use this data control bean for the construction of your user interface. The service class will access local DB and the service REMAINS remote. By default, AMPA will directly show the current data of the local DB, and then in the background call the REST service (online) and refresh the UI, once the REST call has been processed. But this behavior is very configurable and can be changed as you wish.

  (2) Yes, of course, you can manually create data objects, classes of service and persistence mappings, but the wizard is generally much faster.

  (3) HATEOAS logical not for the dynamics of UI where the next action is determined by a link returned in the payload. It is a different model from the static of the UI we build in general with MAF. What is your problem with the help of the wizard of the AMPA?

  Steven Davelaar,

  Oracle Mobile & Cloud A-team.

• Select multiple choice based on the data control does not not value in the correct form

  Hello, I am using JDeveloper 12.1.2

  I made a choice of several select based on an attribute of the year to a data control and I have a method in my managed bean that retrieves the selected values in the select choice of many, and on the basis that I want to do some queries, but the value that returns the selection is not the value of the attribute is the value of memory (or what is the correct value name..)

  Here is the code:

  < af:selectManyChoice value = "#{bindings." Label AnoList1.inputValue}' = 'Ano '.

  ID = "smc1.

  valueChangeListener = "#{OBIEE_managed_bean.» AnoListSelection}.

  autoSubmit = 'true '.

  Binding = "#{OBIEE_managed_bean.anoListBinding} '"

  immediate = "true" >

  < f: selectItems value = "#{bindings." AnoList1.items}"id ="si1"/ >

  < f: validator binding = "#{bindings." AnoList1.validator} "/ >"

  < / af:selectManyChoice >

  Managed bean:

  public void AnoListSelection (ValueChangeEvent valueChangeEvent) {}

  valueChangeEvent.getComponent () .processUpdates (FacesContext.getCurrentInstance ());

  try {}

  System.out.println ("Valor link yearChoice:" + anoListBinding.getValue () m:System.NET.SocketAddress.ToString ());

  ...

  The output is as follows:

  Valor link yearChoice: [Ljava.lang.Object;@4939cade

  Year: Ljava.lang.Object;@7135da60

  This normally happens when the toString is not defined, but how I have to fix this? Someone at - it had the same problem? Any advice?

  Kind regards

  Frederico.

  Hi Frederico

  I'm fine hope you are too.

  Sorry, but you can try

  {for (Object item: (Object []) {valueChangeEvent.getNewValue ())}

  System.out.println (Item.ToString ());

  }

  This should give you something.

• Refresh of Page partial update of form before the data control returns the new value

  Hello
  
  I have a set of paintings of master detail based on a single data source (Session Bean encapsulating a web service call). The high-level table (t1) shows data of opportunity, as the low level (t2) poster contacts for a special occasion. When the opportunity is selected in t1, the contacts associated with this opportunity appear in t2. These tables of work as you wish.
  
  I have a read only form (form of the Panel layout) based on a different data control (supported by a Session Bean that calls a LinkedIn API and a table of database using EJB3 entities). LinkedIn Session Bean method takes a parameter which I get from the current row in t2. (#{bindings.relatedContact.currentRow.dataProvider.id}) I put the PartialTriggers as 't2' on the form.
  
  When the page is loaded for the first time, the first line (line A) from table t2 is selected and the display shows the data associated with this line. If I select another line (line B), the Session Bean is called with the value of the id of the newly selected row, but the display will show the associated data from line A. Thereafter, whenever I select a row in t2, bean is called with the new value, but the form displays the data from the selected line previously.
  
  I guess what happens is that the form is refreshed (using stale data in the data control), and then the call to the session bean is made. I checked using thread and print statements. Sleep() in the bean.
  
  Is this a correct behavior and how can I make sure that the call to the bean occurs before the form is updated?
  
  I use JDeveloper version 11.1.2.2.0
  
  Thank you
  Michael

  Hello

  as answered on StackOverflow, the trick is to set the refresh option on the iterator (s) to the second access WS (table 2) of PageDef on ifNeeded. The default setting is delayed, which in your case is not optimal because refresh occurs during rendering response, which is too late for the access of WS. Try "ifNeeded.

  Frank

• Data controls do not reflect changes in class view Impl

  Hello
  
  I've added a method in one of the viewImpl.java file and add a customer interface for this method. I think it shows the data controls and under this point of view. But I didn't know that I leave the JDeveloper and restart the IDE. I have to lack some refreshing affecting somewhere I tried view-> refresh but did not work. Could - what someone knows why?
  
  Thank you

  Click on the button refresh top right of the accordion of data control (blue arrows in a circle).

• Clarification? : book Frank &amp; Lynn - "shared" data control scope workflow

  I'm looking for clarification around extended shared data of control please, about a point made in the book "Oracle Fusion Developer Guide" McGraw - Hill Frank Nimphius and Lynn Munsinger.
  
  On the 229 page there is a note saying "the extent of control of data can be shared if the transaction is also shared. Without doubt, this means that only transaction options 'Always use of existing Transaction' or ' use existing Transaction if Possible "are applicable to a range of shared data control.
  
  However this seems at odds with what the supports of the IDE, you can also select the transaction options '< no Transaction Controller >' and 'Always start new Transaction' when the data control range is set to shared.
  
  Which is correct? The IDE or the book?
  
  Your help is appreciated.
  
  CM.

  Chris,

  "The scope of control of data can be shared if the transaction is also shared.

  At least the book is OK for what I tested in a simple test case:

  1. no transaction - no sharing

  -no synchronization of master-detail. DC are bot shared
  -validation in called btf commits not calling workflow

  2. "always use existing" transaction selects the shared data control and disables this field automatically, so there is no other choice for this

  3 share DataControl and always "begin transaction".

  Validation of transaction in btf called also commits the transaction by calling TF

  Bottom line is therefore the operation of the ADFc handling seems to be confusing because it is only a guideline for the DataControl to interpret.

  See also page 14 "task flows 'new deal' vs"new db connection"" from: http://www.oracle.com/technetwork/developer-tools/adf/learnmore/march2011-otn-harvest-351896.pdf

  In British Colombia ADF, it seems that separate transactions exist if you use the isolated mode. If you use shared transaction and new then essentially transactions are not isolated.

  Frank

  PS. : I took an action item followed with development about what the expected behavior of the ADF BC for the parameters of the controller are.

• A view link in data controls

  Hello everyone, I am using Jdeveloper 11 g. I have a few items from view. In order to better understand let me us we will call objects and employees. Now, I have a link view and an association between these two points of view. The problem is that when I go to data controls and press the expand button I see all the columns, but I do not see the link from the view, or anything, it's that I can't see the view inside the (subview?) view.
  
  I see a view2 to object within a view of employees, but I want it to be the other way around. I went to the properties of the association for the employee to the object and the view link and created a view and an association for employee object, all exactly the same except, of course the relationship used to go 1 object to good number of employees and is now good number of employees 1 item (I hit), but it did not work.
  
  I would also say that when I passed the tutorial of the ADF using the account of HR, I have not had these problems with departments and employees.
  
  I don't know if this makes no sense, but I hope that there is someone out there to help me with this, I'm sure this is a stupid problem.

  Hello

  If you open the ApplicationModule entry with a double click, a dialog box opens that has a data model class. In this category, on the left side, you see the View object relationships of object available display and on the right, you see the configured option. Any hierarchy on the right hand site, that's what you see in the DataControls Panel. If there is a lack, then just create it here

  Frank

• Control and simulation and data acquisition

  Hello

  I am applying to motor control in Labview. I'm sampling speed from DC engine in real time through an acquisition of data. (my sampling time is 1000 samples per second)

  Then wrap speed as input to a Simulation (simulation and design of the order) and inside the loop simulation, I have a PID controller. The PID has the actual speed of the engine for the acquisition of data and the engine reference speed as input.

  Reference engine speed comes from the generator of signals (control design and simulation-Simulation) and is a waveform.

  My step in the engine size is 1000.

  I am running this application real-time and drawing the reference signal and the motor real signals. I run into several problems with regard to the calendar.

  1. when I change the size of the step of the simulation loop, the frequency of squares of reference also seems to change. For example. What step size = 1000, duration of pulse = 1 s. What step size = 100, pulse width = 0.1. (My pulse frequency is 1 Hz, Simulation clock - 10 kHz). How step size can affect the pulse width.

  2. can you explain the relationship between the DAQ, the Simulation step size loop sampling time, Loop Simulation period.

  3. If I want to collect different sets of data using sampling different hours, it's OK to change the sampling DAQ time without changing the size of the step of the simulation.

  Would also like to emphasize that the DAQmx calendar under sample clock mode is placed in front of the simulation loop and the output is connected to the loop simulation.

  Appreciate any help.

  Hello

  Maybe some screenshots of your code would help. Furthermore, what you have read your samples together with your DAQ screws?

  (1) If you have a waveform, the output is specified as:

  

  For example, if you change the size of the step of the simulation loop, you change the simulation time which are introduced into the signal generator and affecting the waveform that you see if you do not have a size quite small step to characterize the waveform that you generate.

  (2) sampling DAQ rate is the speed at which samples are taken on the acquisition of card data itself. The size of the simulation step, help. "Specifies the interval between the time when the ODE Solver evaluates the model and updates the results of the model, in a few seconds." Simulation loop, still using, "Indicates the amount of time that elapses between two subsequent iterations of the loop of control & Simulation.". " "Step size determine the value of t that is introduced to the functions you use in the loop simulation while the loop simulation period controls simply to how fast you change the following t value. The sampling rate of DAQ hardware is a clock of completely separate hardware controlling the analogue-digital on the DAQ card converter so that you can get a deterministic dt between the samples being acquired.

  (3) you can change the schedule for the acquisition of data, but you will need to restart each time the changes take effect. If you change the calendar of data acquisition and want your values to correlate with your simulation, you will need to change your size of step as well.

  -Zach

  -Zach

• ADF task flows and parameters WITHOUT data controls

  Hello world.
  
  In a previous post, I asked him about the best way to call the workflow "at a distance" by a "local" application Frank Nimphius suggested me to use the JAR ADF libraries between projects for this. I'll apply, but I have a small/big problem:
  
  As I said in my previous post, I exclusively use the EJB 3.0 - JPA technology in all my projects. The components business or data controls are used. Just a lot of Java-based components.
  
  Now, supossed that I have a (based in the HR schema) application with 3 projects:
  
  -L' one with all things EJB: entities from tables, session bean, and an example of a Java client.
  -The second as a 'local' point of view, with a JSPX (viewLocations.jspx) page that contains the table of communities (table_locations).
  -The third view "at a distance", with a JSPX too (viewCountries.jspx) page that contains the table of countries (table_countries).
  
  I have a button in views the remote, and one to switch from local to remote display and the other for the opposite.
  
  The goal is: pass a location of choice of table of locations for the project where I need to see the country for the selected location.
  
  In the table of locations, I use a variable currentLocation (declared as: private location currentLocation = new Locations() ;) to store the selected location and a SelectionListener process, called selectLocation_listener() with this code in the)
  backing.viewLocations.ViewLocations.java:
  
  + ' public void selectLocation_listener (SelectionEvent selectionEvent) {+
  + / / Add code from the event here... +.
  currentLocation = (rentals) table_locations.getSelectedRowData ();
  +}+
  
  If the selected location is stored in the variable currentLocation.
  
  Both in projects the and remote, in that I store the task flow JSPX pages. I have the taskLocal.xml as an unlimited workflow with the viewLocations.jspx as the main view and the taskRemote.xml as a workflow bounded with the viewCountries.jspx as the main view.
  
  I have deployed the project remotely in a library JAR ADF and imported to the local project, then I get it as a special activity Flow call.
  
  The question is: How can I pass the variable currentLocation as a workflow setting to my project remotely? I don't have any data control to bind to a workflow parameter.
  Should I really have some control of data to store my currentLocation variable and bind it to a parameter? Or there is another way without data controls?
  
  Another fact: local and remote project have a dependency with the EJB project.
  What about dependencies? Have a role in call task workflow activities?
  
  Thanks in advance.
  
  If you would like more information or a more detailed explanation please ask me.

  Hello

  a data control is needed for this. If you only want to use ADF task Flow and manage the component UI lie yourself, then you are good to go with this approach. To add parameters to a call from bounded task flows, have a look here

  http://download.Oracle.com/docs/CD/E15523_01/Web.1111/b31974/TOC.htm (Chapter 15, activities of view URL using 15.3)

  You can make the local variable that is accessible from an accessor method Set/getter bean managed so that you can use EL when you set the value of the parameter.

  Frank

• Seeing no Commit and Rollback in the data control

  Hi, I am just learning to use JDEVELOPER and am following various tutorials/demos to learn. When I create my session EJB data control, I don't seem to get operations Commit and Rollback (the green gear icon). I repeated it in a new project with the same result. When I open the example of code written by other developers, I can see them correctly.
  
  Y at - it a setting that I am neglecting to set?
  
  Thank you
  
  Dave

  EJB don't use Commit and Rollback - they use mergeEntity and persistEntity.
  You will get operations commit and rollback if you will use for your persistence layer ADF business components.

• Problem with iterator and EJB data control

  My project components:

  JDeveloper 12.1.3

  Back end & the intermediate layer, JPA, EJB 3, controls data EJB

  JSF pages simple front end (no fragment), bounded task flow

  Hello

  I have a weird problem with iterators in my project, project using EJB 3 & JPA and EJB data controls

  When the user come to a page (this page is part of a stubborn workflow) and add a record to a table (linked to an iterator) and without saving changes, leave the page (means output delimited task flow)

  do something else and again back to the first page iterator always keep this line is entry and it cause problems in my system

  If I close the browser and come to this page for sure the line is not there

  I expect when the user leaving a stubborn workflow each thing belongs to this workflow should be deleted. Is this true?

  Or someone has the same problem? Any suggestions / or work around?

  Respect of

  Mohsen

  Have you read the link I posted? Have you named the BA a transactional data control?

  When you leave the workflow you issue a rllback and the new line should have disappeared.

  Timo

• Regarding the Model layer and data controls

  Hello
  
  I have a small query on the design of an application of the ADF.
  
  Scenario:
  I have a class (Model.java) in the model layer queries who manages all databases and the calculation of the other partners.
  I have a class (BackingBean.java) in the view events related to the layer of controller, which is a bean of support and manages all actions.
  
  Query:
  How to access the methods of Model.java of BackingBean.java for that architecture is not broken.
  
  Proposed solution:
  1. I create a data control that exposes all the methods and I give a call back bean by using the binding operation
  2. I call directly the Member of the class of functions of bean support and not through data controls.
  
  Which should be a better approach to 1 or 2 or any other suggestion.
  
  Thank you
  Rohit
  
  Published by: rohit6699 on March 28, 2012 12:13

  Data controls to "hide" the implementation of the underlying data source and also give you a way uniform (standard) access and data binding. It would be the main reason that I said "#1".

• Is it possible to use the Apple Watch with bluetooth and data celular (for example in a remote area withouth wifi)?

  Apple Watch with bluetooth

  Hello

  Apple Watch can still be used in conjunction with the matched iPhone (which is based on cellular services) in places where there is no Wi - Fi network.

  The availability of some built-in and third-party applications can vary, depending on your cellular data settings and a network of cellular data speeds.

  If your question relates also to longer term, it is not currently possible to update the software on Apple Watch unless the paired iPhone is connected to a Wi - Fi network.

  Some built-in functions of Apple Watch can still be used even when the pair iPhone is not available via Bluetooth or Wi - Fi.

  More information:

  Bluetooth and Wi - Fi on Apple Watch

  Use Apple Watch without her sister iPhone - Apple Support

• loop control and simulation: sync settings

  Hello

  Is it possible to access times higher at 1 kHz source in synchronization settings, control and Simulation in a loop, without use of real-time targets? For example, using time cpu.

  I use myDAQ OR data acquisition, and I need a 100 kHz synchronization source about.

  Thank you very much.

  Kind regards

  Keshav

  N ° when running on a PC of the class, you are working with a set of standard material (with its clock 1 kHz) and a non-deterministic BONE, and there is nothing you can do about it. That is why acquisition cards NOR are all smart devices with their own processors, memory, and clocks.

  Mike...