Handle hex return values in mapping

Hi
I have a return from SAP Content Server that comes in hex format. My message mapping are not happy and as far as I have understood, normal message mapping and XSLT cannot handle this return.
I have tried with ABAP mapping, but the output stream is still on hex format. Does anyone know how a java mapping can handle this? The input stream is ok, but I would like to output a string (or something else readable for the mapping) instead of the outputstream from the java mapping. Do I have to use StreamTransformation for the java mapping, or do I have any other options?
Thanks!
regards Ole

First you should mention, how you want the output, then people can give advice, how to achive this.
When I have understood right, your response is a plain hex string like this:
127464fde452f.
The easiest way to handle this, is envelope this with a tag:
<root>127464fde452f</root>

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Handling the return values and passing values to a dialog

Dear all,
I am trying to return values from a dialog to a page.
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http://www.oracle.com/technology/products/jdev/101/howtos/adfdialog/index.html
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public void handleReturn(ReturnEvent event)
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Regards:
Muhammad Nadeem
[email protected]

If you look further down on the tutorial, you will notice that these values are set in the dialog done() and cancel() actionListeners. Similarly, you will return your own object(s) when calling returnFromProcess() - see the done() method.
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Nick

Handling Collection return values best paractice

hi;
over 50% of my code returns Collection implementations as return values plus those Collections have proprietry objects that have nested Collections inside them.
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Your method seems to return an entity with semantic
maening, otherwise the values wouldn't belong
together. So what's wrong with an object? Especially
if you're doing further calculations with the data -
they should be performed by this object then.They are not particularly well related... apart from they are returned together.
I have several different cases that I am currently working with. In one instance (c, n_t, s_f_0, s_f_1, s_vPrime) are returned, they are all BigIntegers but that is where the similarities end. c is a MessageDigest (converted to BigInteger), n_t is a random number. The remaining values have something in common s_x := r_x + c * x where x = {s_f_0, s_f_1, s_vPrime}.
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Handling Popup Return Values

Hi
I have created a popup that I can pass values to, perform a search in, and return an object from with the values I want set. It works fine.
The problem I have is I want to display one value from the returned object and have another value hidden but available when the originating page submits.
If I display both values in fields on the originating form so they can be seen, all is well. If I try and use a hidden field there is no partial trigger attribute so it doesn't work. If I use a standard text field but change the render attribute to false so it doesn't display, I don't have a value submitted.
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Tom
Message was edited by:
user571146

Errrr, don't know is the honest answer.
I'm new to using JDev and the ADF stuff.
It would seem the hiddenInput field is no good because of the missing PartialTrigger attribute.
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inputText4.setSubmittedValue(null);
inputText4.setValue(d.getId());
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I then use EL to read the value back later on when I am handling the submit of the entire page.
If I set the render attribute to false the, I don't appear to get a value back from the EL.
Does that make more sense?
Tom

Multiple return values (Bug-ID 4222792)

I had exactly the same request for the same 3 reasons: strong type safety and code correctness verification at compile-time, code readability and ease of mantenance, performance.
Here is what Sun replied to me:
Autoboxing and varargs are provided as part of
JSRs 14 and 201
http://jcp.org/en/jsr/detail?id=14
http://jcp.org/en/jsr/detail?id=201
See also:
http://forum.java.sun.com/forum.jsp?forum=316
http://developer.java.sun.com/developer/earlyAccess/adding_generics/index.html
Multiple return values is covered by Bug-ID 4222792
Typically this is done by returning an array.
http://developer.java.sun.com/developer/bugParade/bugs/4222792.html
That's exactly the problem: we dynamically create instances of array objects that would better fit well within the operand stack without stressing the garbage collector with temporary Array object instances (and with their backing store: 2 separate allocations that need to be recycled when it is clearly a pollution that the operand stack would clean up more efficiently)
If you would like to engage in a discussion with the Java Language developers, the Generics forum would be a better place:
http://forum.java.sun.com/forum.jsp?forum=316
I know that (my report was already refering to the JSR for language extension) Generics is not what I was refering to (even if a generic could handle multiple return values, it would still be an allocated Object
instance to pack them, i.e. just less convenient than using a static class for type safety.
The most common case of multiple return values involve values that have known static datatypes and that should be checked with strong typesafety.
The simple case that involves returning two ints then will require at least two object instances and will not solve the garbage collection overhead.
Using a array of variable objects is exactly similar, except that it requires two instances for the components and one instance for the generic array container. Using extra method parameters with Integer, Byte, ... boxing objects is more efficient, but for now the only practical solution (which causes the least pollution in the VM allocator and garbage collector) is to use a custom class to store the return values in a single instance.
This is not natural, and needlessly complexifies many interfaces.
So to avoid this pollution, some solutions are used such as packing two ints into a long and returning a long, depacking the long after return (not quite clean but still much faster at run-time for methods that need to be used with high frequencies within the application. In some case, the only way to cut down the overhead is to inline methods within the caller code, and this does not help code maintenance by splitting the implementation into small methods (something that C++ can do very easily, both because it supports native types parameters by reference, and because it also supports inline methods).
Finally, suppose we don't want to use tricky code, difficult to maintain, then we'll have to use boxing Object types to allow passing arguments by reference. Shamely boxed native types cannot be allocated on the operand stack as local variables, so we need to instanciate these local variables before call, and we loose the capacity to track the cases where these local variables are not really initialized by an effective call to the method that will assign them. This does not help debugging, and is against the concept of a strongly typed language like Java should be:
Java makes lots of efforts to track uninitialized variables, but has no way to determine if an already instanciated Object instance refered in a local variable has effectively received an effective assignment because only the instanciation is kept. A typical code will then need to be written like this:
Integer a = null;
Integer b = null;
if (some condition) {
//call.method(a, b, 0, 1, "dummy input arg");
// the method is supposed to have assigned a value to a and b,
// but can't if a and b have not been instanciated, so we perform:
call.method(a = new Integer(), b = new Integer(), 0, 1, "dummy input
arg");
// we must suppose that the method has modified (not initialized!)
the value
// of a and b instances.
now.use(a.value(), b.value())
// are we sure here that a and b have received a value????
// the code may be detected at run-time (a null exception)
// or completely undetected (the method() above was called but it
// forgot to assign a value to its referenced objects a and b, in which
// case we are calling in fact: now.use(0, 0); with the default values
// or a and b, assigned when they were instanciated)
Very tricky... Hard to debug. It would be much simpler if we just used:
int a;
int b;
if (some condition) {
(a, b) = call.method(0, 1, "dummy input arg");
now.use(a, b);
The compiler would immediately detect the case where a and b are in fact not always initialized (possible use bere initialization), and the first invoked call.method() would not have to check if its arguments are not null, it would not compile if it forgets to return two values in some code path...
There's no need to provide extra boxing objects in the source as well as at run-time, and there's no stress added to the VM allocator or garbage collector simply because return values are only allocated on the perand stack by the caller, directly instanciated within the callee which MUST (checked at compile-time) create such instances by using the return statement to instanciate them, and the caller now just needs to use directly the variables which were referenced before call (here a and b). Clean and mean. And it allows strong typechecking as well (so this is a real help for programmers.
Note that the signature of the method() above is:
class call {
(int, int) method(int, int, String) { ... }
id est:
class "call", member name "method", member type "(IILjava.lang.string;)II"
This last signature means that the method can only be called by returning the value into a pair of variables of type int, or using the return value as a pair of actual arguments for another method call such as:
call.method(call.method("dummy input arg"), "other dummy input arg")
This is strongly typed and convenient to write and debug and very efficient at run-time...

Can anyone give me some real-world examples where
multiple return values aren't better captured in a
class that logically groups those values? I can of
course give hundreds of examples for why it's better
to capture method arguments as multiple values instead
of as one "logical object", but whenever I've hankered
for multiple return values, I end up rethinking my
strategy and rewriting my code to be better Object
Oriented.I'd personally say you're usually right. There's almost always a O-O way of avoiding the situation.
Sometimes though, you really do just want to return "two ints" from a function. There's no logical object you can think of to put them in. So you end up polluting the namespace:
public class MyUsefulClass {
public TwoInts calculateSomething(int a, int b, int c) {
public static class TwoInts {
    //now, do I use two public int fields here, making it
    //in essence a struct?
   //or do I make my two ints private & final, which
   //requires a constructor & two getters?
//and while I'm at it, is it worth implementing
//equals(), how about hashCode()? clone()?
//readResolve() ?
}The answer to most of the questions for something as simple as "TwoInts" is usually "no: its not worth implementing those methods", but I still have to think about them.
More to the point, the TwoInts class looks so ugly polluting the top level namespace like that, MyUsefulClass.TwoInts is public, that I don't think I've ever actually created that class. I always find some way to avoid it, even if the workaround is just as ugly.
For myself, I'd like to see some simple pass-by-value "Tuple" type. My fear is it'd be abused as a way for lazy programmers to avoid creating objects when they should have a logical type for readability & maintainability.
Anyone who has maintained code where someone has passed in all their arguments as (mutable!) Maps, Collections and/or Arrays and "returned" values by mutating those structures knows what a nightmare it can be. Which I suppose is an argument that cuts both ways: on the one hand you can say: "why add Tuples which would be another easy thing to abuse", on the other: "why not add Tuples, given Arrays and the Collections framework already allow bad programmers to produce unmainable mush. One more feature isn't going to make a difference either way".
Ho hum.

The returned value of BAPI call

Hi, experts,
I have a question about returned value of BAPI call.
when the returned value is mapped as an attribute and this return value itsself is of the type: table of a certain structure. Is there any possibility that the value of this table still can be extracted from the mapped attribute? If it is possible, how?
If not, how should this kind of situation be handled:
when the returned value of the function at the backend has more one layer structure?
Thanks and best regards,
Fan

In my experience you shouldn't use the service wizard to generate the context of such deeply nested structures. They don't generate or map correctly because it tries to put the table type as the type of the context attribute.
Instead you should propery model the relationship in the context using nested nodes. Here is an example of address <-> address text where you can have multiple address texts per address. From the service this was a returned nested table.
****BP Address and Address Text
data lo_nd_bp_addr type ref to if_wd_context_node.
data lo_nd_bp_addr_text type ref to if_wd_context_node.
data lo_el_bp_addr type ref to if_wd_context_element.
* navigate from <CONTEXT> to <BP_ADDR> via lead selection
lo_nd_bp_addr = wd_context->get_child_node( name = wd_this->wdctx_bp_addr ).
lo_nd_bp_addr->bind_table( wd_this->gt_bp_addr ).
****Add the Address Text Table as Child of each Address Context Record
data element_set type wdr_context_element_set.
field-symbols <wa_set> like line of element_set.
field-symbols <wa_bp_addr> like line of wd_this->gt_bp_addr.
element_set = lo_nd_bp_addr->get_elements( ).
loop at element_set assigning <wa_set>.
    read table wd_this->gt_bp_addr index sy-tabix assigning <wa_bp_addr>.
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    lo_nd_bp_addr_text->bind_table( <wa_bp_addr>-t_text ).
endloop.

Calling a method that returns values in a map - using JSTL

Hi I have a method within an object that returns a List for a particular category
public List<String> getFieldsInCategory(String categoryName){
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}Trying to call the above function in jsp, the object is available as "document",
how do i pass a key to the above function to return a List.
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please let me know how to go about this.
Thanks

JSTL can not directly call methods that take parameters.
All it can do is access javabean properties - ie via the revealed get/set methods.
You can fudge it by having a seperate variable to set:
Map _categoryFieldsMap;
String category = null;
public void setCategory(String category){
this.category = category;
public String getCategory(String category){
return category;
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<c:set target="document.category" value="ABSTRACT"/>
<c:forEach items="${document.fieldsInCategory}" var="temp">
...The other alternative is to return the entire map to the page.
EL accesses maps quite handily.
so given a method that returns the map:
public Map getCategoryFieldsMap(){
return _categoryFieldsMap;
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evnafets

Return values for deadlock handling in BDB-SQLITE

The whitepaper titled "Oracle Berkeley DB SQL API vs.SQLite API – A Technical Evaluation, November 2010" notes that
all programs should be able to handle SQLITE_ERROR or SQLITE_LOCKED while handling potential deadlocks. From the sqlite errorcode page
#define SQLITE_ERROR 1 /* SQL error or missing database */
Further documentation lists SQLITE_ERROR as "This return value indicates that there was an error in the SQL that was passed into the sqlite_exec."
Question 1:
Why is BDB-SQLITE raising a generic errorcode "SQLITE_ERROR" when we have to abort a transaction and start all over again?
While running my test application under intensive load, I have never gotten SQLITE_ERROR. I have gotten SQLITE_LOCKED and occasionally SQLITE_BUSY which is being handled in my code.
Question 2:
Can someone please confirm whether is this indeed is the expected behaviour?
Thank you for your time.

The behavior described in the white paper only applies to Berkeley DB version 5.0, versions 5.1 and beyond do not have this behavior.
In DB-5.0 SQLITE_ERROR is returned when you attempt to use an explicit transaction that has already returned SQLITE_LOCKED. The reason for this is because in BDBSQL (as opposed to SQLite) SQLITE_LOCKED is returned when a transaction is forced to give up its locks because it has entered a state of deadlock with another transaction. Because the transaction has lost its locks it is invalid and cannot be used anymore other than to abort it, that is why SQLITE_ERROR is returned if you continue to use the transaction. In DB-5.1 and beyond SQLITE_LOCKED means only the last operation lost its locks and has been rolled back, the transaction is still good and can still be committed or be used to perform other operations.
I hope this clears up your confusion.
Lauren Foutz

How to map AM method return values in the bean

Hello -
I have this requirement to map AM method return values in the bean as explained below. Please suggest a solution.
Scenario: I am calling an AM method, which returns a String object on page load.
AMImpl Method-
public String getProfileName (){
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I am using ADF 11g.
Regards -
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Edited by: Rohit Makkad on Apr 21, 2010 12:23 AM

Hi, I think there are two ways, from the data control drag n drop the methods return value to the page. This way a binding for that will be created at the page definition eg retVal.
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Tilemahos

When i add menu bar in my user interface gives me error that this handle is not a panel handle(return value -42)

i have 3 panels in my application and parent panel is displayed first then i display other two panels which come to the front then on entering correct password i discard the child panel and then you can see parent panel , but there is an issue when i add menu to my parent panel i dont know whats wrong when i add menu bar in my user interface (parent panel) gives me error that this handle is not a panel handle(return value -42) for a child panel. when i dont open and display child panel then its fine , and even without menu added to my parent panel all my panels and my application works perfactly

Hello smartprogrammer,
some more informations are needed in order to properlu help you in this situation:
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- Are you dynamically tailoring the menu bar at runtime (adding or deleting menu items, dimming / undimming some of them or checking / unchecking)?
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How to map the method action return value directly into screen using variables?

Hi,
My JDev version is 11.1.1.6.3.
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I want to map the return value of this method action directly into screen by making use of PageDef variables.
Question:
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2. If Question 1 is achievable, assuming the method action returls List instead of String (I know well it returns 2 items), can I map the 1st Item against Variable 1 and 2nd Item against Variable 2 directly?
Thanks in Advance.
Ragu

Thanks Frank, but If I directly map the MethodAction's result to UI, there are chances where it might get executed whenever I refresh the UIComponent (UIComponent to which the methodAction result is mapped. Isn't so??). Instead, If I invoke the MethodAction using InvokeAction, I can get the control on when it should get invoked (using RefreshCondition). If I assign the variable to UIComponent (Assume I've mapped the method action result to variable using expression), refreshing of UIComponent will not cause any performance issue I feel.
Correct me If I am wrong.

How use return value of JavaBeanShell ODI prodecure in Interface Mapping

My source data is in Complex FIle and Target data is in Oracle.
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<@
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If yes how?
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Hi,
I have done using PL/SQL or a simple select from dual statement under oracle tech in function/procedure which can used anywhere.
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Warning: AppleScript newbie on the loose without adult supervision.
I have an Omnis Studio app that calls an AppleScript that in turn invokes a couple of shell commands. As an aside, I don't believe Omnis Studio can invoke a shell script directly without other complications.
What I would like to do is capture the return code and/or any stdout from the shell commands in the AppleScript, then pass that result out as a return value from the AppleScript.
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There is a whole forum for just Applescript here:
http://discussions.apple.com/forum.jspa?forumID=724

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Hi,
I'm trying to do an insert into a table in an Oracle database with an auto-incrementing primary key (using a trigger and sequence) and I need to retrieve the value after the insert. From SQL*Plus, I'd enter:
var id number;
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System.out.println(newId);Thanks!

This is untested:
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Text item mapped against more than one LOVs for returning value

hi to all,
is it possible to have two LOVs (LOV1 & LOV2) that return value to a same text item (:LOV_VAL )on a form.
i.e.
on selecting LOV1 row, value is returned to :LOV_VAL item.
On selecting LOV2 row, value is returned to :LOV_VAL item.
on the basis of valued retured to :LOV_VAL the data block is queried.
If yes how , if now please provide me alternative way.
Thanks in advance.
plz do it fast.

Hello,
Why don't you try ?
You can define a return item for each column of each LOV.
If you want, you could have one hundred LOVs that return the same column in the same item.
Francois

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