An "abstract" question :-)

Hello friends
What's the best Layout in a Content pane?
I've compined various of them but my Interface does not seem very stable for example when i'm inputting text in the text fields the JLAbels seemed to be moved.
Is there any Standard to follow for start ?
thanks.

So it's a matter of experience.
I'll do my best.

Similar Messages

Inheritance/Abstraction question

Ok here is what I currently have. I have a base class, ORDERFROM, which I have made abstract. Then I have an interface, ORDERFORM_ACTIONS, whcih defines actions for an order form. Then I have a class ORDERFORM1. Is there a way to add some more abstraction to my order form family tree so I can have default methods with no parmeters? I am looking for a way to keep from having to implement all non parameter methods again for every new order form. I know they have to be implented in the base class for this to happen but what if the location changes? Keep in mind the location of the data items on the order from will change from revision to revision. Here is what the code structure looks like
public interface OrderFormActions{
   public boolean placeOrder();
   public String getName();
   public String getPhone();
public abstract class OrderForm implements OrderFormActions{
public OrderForm(){
public String getName(int row, int col){
      String name = getCell(row, col);
public String getPhone(int row, int col){
      String phone = getCell(row,col);
public boolean placeOrder(){
public class OrderForm1 extends OrderForm{
public OrderFrom1(){
     super();
public String getName(){
    int row = 1;
    int col = 2;
    return super.getName(row,col);    // I know super is not needed used for illistration
public String getPhone(){
    int row = 4;
    int col = 12;
    return super.getPhone(row, col); // I know super is not needed used for illistration
}Ideas? As abstract as you can go?

I mean the interface methods have to implented in
some class. And if I don't want have to implement
all the interface methods in every inherited class
then I have will have to implement them in thebase
class. (Low cuppeling, high conhesiveness)Then, either you should not have an inerface with
th all those methods, or you should have an adapterThats totally wrong. Parent classes behavior is not governed by the sub classes. refer to Dependency Inversion Principle
http://www.eventhelix.com/RealtimeMantra/Object_Oriented/dependency_inversion_principle.htm
class that provides default behaviour from where
your classes can inherit or you should put those
default behaviour up in the class hierachy.Now thats an even worse advice. Under what conditions would you provide an adapter. This particular scenario is not one of them. refer to Software open closed principle.
>
May the code be with you.If you do things like this I guess the code would not be with you.

User does not respond-after reading countless post i still don't understand

hi. i have been reading post on the 'user does not respond' and i still do not understand. i don't know how to check my ports and how to change them. all of them have been pretty technical. please, is there anyone that can explain it in layman's term?
2006-09-17 07:57:14 -0400: sentosa225 did not respond.
Tried to send UDP SIP "invite" to the following IP addresses and ports:
218.111.157.122:5060, 169.254.186.77:5060, 192.168.1.8:5060
that is what i get. i read and saw that 5060 is the correct port, is it?
can anyone please help me. there seem to be no end to this.

Hi Mark,I think I'll have to brush up my english first of all.Or think about how to put it,so that you can understand my abstract question.I tried to find a site of Adobe support in Dutch because that may be easier for me and for others to understand,because everything computer related is so new to me,that my questions are not very clear most of the time.But I can't find support in my language,so I will try and think a bit more how to answer your questions to my question.Bye.Marion

Query SQL Tuning

Hi,
What are the reason for "FULL TABLE SCAN"?.
Kindly provide reason.

This is a very abstract question. Ok some of them that came into my mind.
1. If you dont have a index on a column and you are using that column to filter then it goes for a full scan.
2. You have index on the column but still the cost of using the index is heavier than a full scan then oracle goes for a full scan.
So now to know how the cost changes you must spend lot of time reading the behaviour of index. A nice place would be [Richard Foots Blog|http://richardfoote.wordpress.com/]
Thanks,
Karthick.

Modelling Individuals and Organizations

I'm developing an application where a user can either act as an individual, or as a member of an organization, and I'm having some trouble modelling this so support the various systems.
To explain the rules, users log in and peform actions, but these actions may be in their own name, or performed on behalf of their organization. An individual can only peform the former, while a member of an organization can act on their own behalf or on behalf of their organization. A user can only be a member of a single organization.
And to clarify, an organization is a different beast than an individual. Primarily because it isn't a different type of individual, but instead a collection of individuals that operates as an independent identity in the system. It also supports a range of member-management functionality (payroll, for example) because of that. While it doesn't do anything itself, since it's members perform actions for it, it is the organization that is considered to have performed the action when the dust settles.
So now much of the objects within the system can have a parent that is either an individual or an organization, and several UI screens apply to both scenarios equally, with very minor differences (sometimes with no difference at all).
This leads to a host of implementation details. Let's say both individuals and organizations can buy widgets as one of many actions they both share. Now we must support the concept of widgets belonging to either an individual or an organization. Business logic must be able to handle both scenarios, ideally with minimal duplication, and persistence has to take into account that the parent relationship of widgets isn't bound to a single type, but one of two (individuals or orgs). Most of the systems in the application must deal with this issue.
I know this is a very abstract question, but I'm at an abstract phase of the design. Has anyone dealt with this type of model, and what techniques have been used to architect it?
Thanks to everyone in advance!

I think you'll need some others. There's a
many-to-many relationship between
Individuals and Organizations. True enough. I already have an object representing the relationship and attributes related to it (date, role, etc).
Can be complex. I've seen it done badly.
I don't think Party is necessarily trivial, even
if the idea is simple.Certainly isn't trivial. All sorts of new issues arrise. For example, with the proposed table layout, Parties, Individuals, and Organizations all have different ID's, and that needs to be reconciled.
Situations arise where your working with a system that references Parties, but you want to access more detailed information about the Person or Organization, perhaps for display purposes. Now you have to figure out how to get the derived type with just a Party ID. Doable, but I'd prefer to avoid a blind search through the Person and Organization tables.
What if the Party table referenced the sub-type? Perhaps a column that maps to an enum in code such as PartyType.Person and PartyType.Organization. Mappers like Hibernate could use this information to automatically create an object of the derived type when you load a Party.
Anyone know of any open-source Java or .NET projects that solve these problems? I'd love to see code.

Creating DW templates - Repeating Optional Region?

Hello Again:
I know that it isn't always the best to pose abstract questions on forums, but I am wondering if anyone can tell if/how one can create an optional region within a repeating region of a DW template?
The specific conundrum I seem to face that if a region has two divs within it (one with and one without a textbox surrounding it, for example) and if the user of the template chooses to repeat the section, how can they delete the second div within the repeated region (deleting through the modify tempate option) without deleting all the previous instances of the div as well.
If there is a way to do this, I would appreciate some guidance.
Thanks in advance.
Steve Webster.

Yes, and first my apologies, as I could have provided the example first of all. If you go to http://socls.org/testing/immigration-refugee_law.html I can perhaps explain my objective better. On that page you see a series of text boxes one with a gradient background and a second with a only a outline in red. For the moment ignore the text boxes that are rendered side by side and assume that the 1st two horizontal text boxes are all that I want to repeat throughout the page.
I want to place the two of those full width text boxes within a repeating region (or turn them into a repeating region). However if the webmaster needs to add content but doesn't need a pair of text boxes, or otherwise gets to the end of her content sections and doesn't need a final red outlined box, then I would want that the last red outlined box to be optional, without however deleting previous instances. Sometimes content can't be organized so neatly as to finish with an even number of "content sets".
I think the bigger problem is, as I understand it, that you can't create two "divs" (in this case text boxes) and have each repeating independently, and allow each to be moved up and down as though they were passing through another text box/div that also constitutes a repeating region. The only way to have the pattern to repeat is to "pair" them as a single unit (Or perhaps I have misunderstood how the repeating action works ?!?) I have tried treating them as independent repeating regions and it doesn't seem to work in the manner I would like. If you tie them together in this way, then the only way to end with an uneven number of text boxes is to make one optional. But it seems that if you make the second in the pair optional, then by "turning it off", you end up turning all off.
At least that is how it seems to work.
You may be right that the design is too complicated to work as a template in this fashion.
Or, perhaps I am fundamentally mistaken on the architecture of the repeat concept.
Thanks again for your patience and persistence
Steve.

Recursive nesting of Facelet Composite Components

I use JSF2.0 Facelets and Composite Components. I want to display a hierarchical questionary, where the questionary contains a Category List, and any Category can contains subCategories and Questions. In fact, Category inherits from abstract Question class, and we have also some other non-abstarct Question class, like IntQuestion, BooleQuestion, etc.
I defined a Composite Component for Category:
    
    <cc:interface>
        <cc:attribute name="category"/>
    </cc:interface>
    
    <cc:implementation>
        <h3><h:outputText value="#{category.label} " /></h3>
        <ui:repeat value="#{category.subCategories}" var="subcat">
            <h:panelGroup rendered="#{cc.attrs.category.type == 'Category'}">
                    <ez:category category="${subcat}" />
            </h:panelGroup>
            <h:panelGroup rendered="#{cc.attrs.category.type == 'IntQuestion'}">
                <h:outputText value="#{cc.attrs.category.label} " />
                <h:inputText value="#{myBean.answersByQuestion[cc.attrs.category].answer}" />
            </h:panelGroup>
            
        </ui:repeat>
    </cc:implementation>So my Questionary Page would be very short:
                <ui:repeat value="#{myBean.questionary.categories}" var="cat">
                    <ez:category category="${cat}" />
                </ui:repeat>But unfortunately nested composite components are put together before EL-expressions sre resolved, so we get an infinite loop (StackOverflow).
Do you have some idea to correct this composition?
Edited by: GezaCH on Jul 28, 2010 3:28 PM

I wrote something like that about a year ago, and it wasn't hard, and didn't take long time, so you should be able to write code for that in less than an hour if you know about reflection.
Kaj

Acuisition of a Company based on US GAAP by IFRS based parent .

Hi
A very abstract/high level question.
We are in process of acuiring a new company which is reporting based on US GAAP & our organization is based on IFRS
What will be the key integeration points to be thought of in this scenarios
Additionally we have fiscal year from Jan to Dec ,they have from july to June ?
Intercompany profit from Product transfers between the acuired company & acuiring company? what points to be considered
Historical Data Migration ?? how to achieve
Additionally they lag by 101-5 days in reporting compared to parent ??
Will appreciate views based on your experience,brainstorming etc
Rgds
Dheeraj

will appreciate any one else sharing their views based on theri experience for this particular scenario
I agree with Greg, for me it also does not looking like an abstract question.
I'd say it's a demand for particular projects solutions. With the formulations of the bunch of the project's problems in general words, without any details. The more general the question, the more general the answer.

Is it possible to place a view of joined tables into Shared Memory?

Thanks.

Tom,
The view of joined tables is just a possible selection method. You may select first and store all data in shared Memory. You better define a shared obkect with a read method and a buffer attribute.
The best thing you can do here is just to say what you want to do and why. It is always difficult to give a satifactory answer to an abstract question.
Regards,
Clemens

What can SCOM 2007 do for me?

I realize this is an abstract question but at this point I don't know what I don't know so bear with me.
Here is my situation; I have just been asked to make SCOM 2007 "work". I have SCOM 2007 installed with SQL 2008 in a Server 2008 R2 domain of approximately 400 users and 300 clients.
I have an upcoming network vulnerability test coming up and I have no prior experience with SCOM. I'm a Server guy just never any experience with SCOM.
I'm ultimately trying to prevent phishing attacks, spoofing, brute force attacks on user accounts and general data exfiltration. Just by reading through some documentation I think at best SCOM is only going to notify me that some of these things are happening
and not actually preventing them and that's ok. After I got it installed and downloaded some management packs I realized the vast amount of information that SCOM is capable of giving me is overwhelming.
I really just need to know what information I need and what do I need to configure to help mitigate some of the things I mentioned above?
Thanks is advance for your advice.

first of all, SCOM strong point is not on system vulnerability monitoring. May be SCOM ACS(Audit Collection service) may be help. Pls. refer to the following post about ACS
How to Deploy Audit Collection Services (ACS)
http://blogs.technet.com/b/fesiro/archive/2013/01/08/how-to-deploy-audit-collection-services-acs-in-scom-2012.aspx
Collecting Security Events Using Audit Collection Services in Operations Manager
http://technet.microsoft.com/en-us/library/hh212908.aspx
Deploying ACS and ACS Reporting
http://technet.microsoft.com/en-us/library/hh298613.aspx
Reporting on security with Microsoft Audit Collection Servces
http://www.techrepublic.com/blog/data-center/reporting-on-security-with-microsoft-audit-collection-services/#.
Roger

USB Drive doesn't show up in My Computer

I have a 2.5" Seagate 500GB 7200RPM laptop drive mounted into a USB case. I plug it into my USB port along with another one that goes from DC to a different USB port. In Device Manager, it is shown as "ST950042 0AS USB Device," which tells
me that it is being seen. However, when I open "My Computer," the drive does not show up. I have a failing drive that I keep all of my media files on and am trying to back that up to this drive, however, I cannot get a drive letter assigned to do open the
drive and back up my files.

Why doesn't my one still work?
i got my important work there!
If you seriously want some assistance with your problem, then start your own post and provide lots of details about your system and your situation. Absolutely no one can provide an answer to such an abstract question. You mus provide details,
lots of details.
Read the Microsoft KB @ http://support.microsoft.com/kb/555375 on how to ask for help and then start your own thread.
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. ”

Can someone help me clarify a bridge pattern?

So I have this qualm about bridge patterns. A professor I have is telling me I should never be doing switch statements in my driver if I'm using bridge patterns (except for at object creation), but I think he's wrong and I want to clarify when I think you're going to have to use one of two faux pas.
Let's take a look at the good old Shape example. So we have a Square and a Circle and we want them to be able to draw themselves. The square uses two points (top left, and bottom right let's say) to draw itself and the Circle uses a center point and a radius to draw itself. It's obvious we need a switch statement at creation to determine which one we're making. My question then comes in, what about when we edit it? Let's say we want to change the points in the rectangle or the point/radius on the circle. We'd either need to do one of two things:
a) if we put our editShape function in our driver class, we'd have to do a switch to see what type of shape we're editing before we can find out if we need to get input for two points or if we need to get input for a point and a radius length, and then pass that to our edit functions within the objects themselves.
b) the other option requires we have both objects contain an editShape function (which would probably be an abstract method within Shape that we'd override) and each object would implement them different. Within this function, the object itself is displaying prompts and getting input.
A is clearly not the right choice, because it results in high coupling and we're having to switch on our objects and we'd have to change the code every time we add new shape classes. B makes sense because we can just call Shape.editShape() from the driver and depending on which type it is it will ask for the proper input from within the object. However, I thought it was bad practice to have input (specifically prompts and scan reads) from within an object.
Is this where the bridge class comes into play? For example, would I have a ShapeIO class (which could then have an extended ShapeIOConsole class possibly vs a ShapeIOFile class that would read input from a file?) that would contain the prompting from there? And then that class would handle all possible inputs I'd be prompting for?
E.G. ShapeIOConsole.getPoint() would have the scanner and prompting calls and would return a Point while my Shape.editShape for Square would just call ShapeIO.getPoint() (assuming I have a ShapeIO object within Shape that's been instantiated as a ShapeIOConsole object) to get two points and my Shape.editShape for Circle would call a ShapeIO.getPoint() and a ShapeIO.getRadius? This would mean anytime I have a new Object that has a new type of property to get input for, I'd have to add a function to my ShapeIO, right?
Anyways, I hope that made some sort of sense. I guess my question is am I correct in most of what I said, if I even said it clear enough for anyone to understand it ^^.

benirose wrote:
Thanks for your reply lance! I have a few responses if it's not too much trouble:None at all.
>
>
>>
That isn't obvious to me at all. Why do you need a switch?
I would assume you need a switch statement because you need to know what constructor to call, right? For example if you have Shape myShape, wouldn't you need to determine if you're instantiating that as a Square or Circle? I mean you could do it with if statements and not a switch, but you'd need to conditionalize (is that a word?!) the creation, correct?Presumably something has caused the need to instantiate a particular shape. Let's suppose that the action that caused it was that a user pressed a button on a GUI. Now presumably there is a button for a new circle and another button for a new square. Each of these buttons can have their own event handler. The event handler for the 'New Circle' button can instantiate a new circle (or call something else that does it) and the event handler for 'New Square' can instantiate a new square (or call something else that does it). Where does the conditional logic come in?
It could be that your user interface is a text based list of items to create, and the user has to type a number to choose. In this case, you might need to do some conditional logic, yes.
Of course there are times when context is not given or insufficient. Often at the fringes of systems, when interacting with other systems, you need to determine what kind of message you've been given before processing it. But even then, there are usually better ways than lots of conditional logic (dispatch tables, for example).
Having said all of that, I have worked on a system where a GUI had something like 150 different buttons / menu items / other things that could cause actions to occur. The original developer had decided to give each of these things a number so that he could save himself the bother of creating a new ActionListener or whatever for each item, and routed every action through the same switch statement to try to recover the information he'd just thrown away. Bizarre.
>
>>
You could use a visitor rather than doing a switch.
I don't really know much about the visitor class, but I'll give it a look.
I assume you mean 'from within a "domain model" class'. I think the bad practice you're referring to is the failure to separate model concerns from view concerns (or, more generally, the failure to separate the concerns of different domains).
Yeah, I suppose so. I just don't see many classes asking for it's own input, you usually pass it from the driver class. There's no editString() function which asks for input of a new string, you do that in the driver and then set the new string.Try not to think in terms of a 'driver'. This suggests procedural thinking. Think instead of a collaborating eco-system of objects where one object may delegate to another to do some work on it's behalf. The delegator may, when delegating, also give the delegate something that it might find useful to do its work (such as a means of obtaining data or something that it can further delegate some of the work to). If you do it right, the delegate only sees an abstraction appropriate to its place in the eco-system, behind which could exist any number of implementations. If you're just starting out, this may seem a bit heady. Don't worry about it, it'll come...
>
>
>>
I wouldn't necessarily do any of it this way; I'm only trying to address your question about Bridge. It probably is a good idea to go and talk to your professor again. If you do, come back here and tell us what he said...
Yeah, I'm not sure I'd do it this way either, but the assignment is a Survey taking program, and the basic implementation was to have an abstract Question class which has a two level inheritence tree of MultipleChoice, Essay, and Matching inheriting from Question, and TF, Short Answer, and Ranking inheriting from MC, Essay, and Matching respectively. So our Survey class would have a Vector of Questions, which is fine, but he said we couldn't do any conditioning to see what type of Question we have, and that we should just be able to make calls to abstract functions in Question that will handle everything.It sounds like he's trying to get you to put behaviour into the Question subclasses, rather than having it in the Survey (i.e. to do what I said above :-). This may feel a bit strange at first, and you might be saying to yourself 'I thought OO was supposed to model the real world, but a question doesn't do anything in the real world'. One of the core concepts in OO is that if you find yourself doing something to an object in the real world, then ask the object to do it for you in your model. That way, system intelligence gets distributed evenly throughout your model.
You do run into odd issues though. For example, in a library, suppose you have a book and a bookshelf. Supposing the book has just been returned to the library, should the book now goBackToShelf(), or should the shelf receiveBook(). It might even be both under some circumstances. It could also be neither, if you decide that a Librarian is part of your model. But be careful about doing that. You could get all of your behaviour concentrated in the Librarian with everything else in the system being dumb containers of data (some might argue that would be a good thing).
>
On a side note, I know if you type a variable with the abstract class (E.G. Question) and then instantiate it as an inherited class (E.G. MC), you can only make calls to the abstract functions (at least Eclipse tells me so). Is it the same way with an interface? What if my Question class wasn't abstract, then I should be fine, right?You can only make calls to the methods declared by Question and it's supertypes (it doesn't matter whether those methods are abstract or not). This is the same for interfaces and it would also be the same if Question was not abstract. The reason is that when you have a declaration like this
Question question;you are defining a variable called 'question' of type Question. The only things you can ask 'question' to do are those things that its type knows about, which are the methods declared by Question and it's supertypes. The fact that 'question' refers to an object of some subclass of Question doesn't matter. All that matters is the type of the variable, which is Question.
Regards,
Lance

Implementing class events

I was reading the Collections FAQ:
"... Why don't you provide for "observable" collections that send out Events when they're modified?
Primarily, resource constraints. If we're going to commit to such an API, it has to be something that works for everyone, that we can live with for the long haul. We may provide such a facility some day. In the meantime, it's not difficult to implement such a facility on top of the public APIs. ..."
Event driven programming as in developing GUIs is fairly simple. Would it be possible in Java to extend Object in a way so that when you add a field to a class it would automatically create code for eventfiring and stuff? I ask because I think this would be very difficult but it could be my ignorance as the FAQ says "not difficult to implement"?
It is a rather abstract question I suppose... ;-)
jimCap ( who is still flabbergasted about reading that the NetBeans website is coded in PHP )
http://nilostep.com
"... Every Coin Has Two Sides... "

JavaBeans already has an event mechanism based on the java.util.EventObject. You can use that and the java.util.EventListener interface to accomplish this.
Create an ObservableCollection that implements java.util.Collection and have it notify CollectionEventListeners when interesting events occur.

Flash Player 9, Director MX, LocalConnection and the file system sandbox

I have a Director MX asset to which I have no source-code
access. Previously I could use LocalConnection in a Flash Player 8
projector to interact with the Director app, local to the
file-system. I seem unable to do the same thing with a Flash Player
9 projector. The director asset looks for and loads the relevant
Flash projector and unloads itself when it is no longer present,
and this functionality continues without a problem. However, when I
use the LocalConnection.send method, the Flash player does not
receive the expected responses.
I know that this is a rather general and abstract question:
put simply, does anyone know whether Flash Player 9 and Director MX
can't talk to each other using LocalConnection?
ps to pre-empt over-enthusiastic respondees, yes I am aware
of other technologies such as AIR, Zinc etc, and no they're not a
viable option for my particular project.

Hi,
the following sourcecode is compiled with Flexbuilder 2 and
runs in flashplayer 9.0.115 as expected.
How do you trigger the effect?
best regards,
kcell
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml"
layout="absolute">
<mx:Button label="run"
click="{wr1.play();}"></mx:Button>
<mx:Label id="l1" top="20" text="this is label"
visible="false"/>
<mx:Image id="img1" source="@Embed('k.jpg')" top="40"
visible="false"/>
<mx:WipeRight id="wr1" target="{img1}" duration="1000"
effectStart="img1.visible=true" effectEnd="{wr2.play();}"/>
<mx:WipeRight id="wr2" target="{l1}" duration="1000"
effectStart="l1.visible=true"/>
</mx:Application>

Number of views in an Oracle database

a. Is there any reason number of views in a database will have a "big" impact in the performace of the database. I believe "No". But I needs some facts to prove that.
b. If there will be an impact, can any one tell me what is that number will be for a machine which 48GB memory with 24 processors running Oracle 9I on a HP environment.

Well.. very "abstract" questions, but I think
a. it depends
number of views per se doesn't matter. Actually I have experienced cases where a few "bad" views brought the machine to its knees. Or using views when no proper statistics was available.
b. How big is a house?
:) what is x if we know that y is 48 and z 24?
But you have a very powerful machine there, and to some extent you could hide a lot of performance problems with it.

An "abstract" question :-)

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