Re: need more abstract AsyncCallback class
that doesn't work either :-|. I need something that works on all
collections. Do i need a ? somewhere probably?
On 11 Apr., 16:52, Magno Machado magn...@gmail.com wrote:
Try this:
class LoadMapsE, T extends CollectionE implements
AsyncCallbackT {
On Mon, Apr 11, 2011 at 11:43 AM, tanteanni tantea...@hotmail.com wrote:
meanwhile i tried your suggestions but i am struggling at getting the
right signature:
so i want a callback working of all kinds of collections and adding
the result to the given collection:
at the moment i got this:
private class LoadMapsT extends Collection implements
AsyncCallbackT {
private T target;
protected LoadMaps(T whereTo) {
target = whereTo;
}
@Override
public void onFailure(Throwable caught) {
Window.alert(caught.getMessage());
}
@Override
public void onSuccess(T result) {
target.addAll(result);
}
}
the only problem is now: i can't call the constructor:
MapString, ListString myMap = new HashMapString, ListString();
LoadMaps loadMaps = new LoadMaps(myMap);
--The constructor AdminUnits.LoadMaps(TaskDoneEvent,
MapString,ListString) is undefined
besides this i get Type safety: The method addAll(Collection) belongs
to the raw type Collection. References to generic type CollectionE
should be parameterized in LoadMaps-onSuccess-target.addAll(result)
so how to fix this
On 11 Apr., 14:00, tanteanni tantea...@hotmail.com wrote:
i am fairly new to gwt and struggling some how on correct/nice RPC
implementation (it is working but code becomes ugly). On my first GWT
based apps i often load some lists/data from db into front end. (Lists
to be used in combo boxes for instance).
so if i have a widget that needs 3 different lists (probably
ListString or MapString, String) i specify a service-method for
each list. the problem is to load all those lists, i have to implement
one class (...implements AsyncCallback) for each list.
but the only difference between this implementations is that they load
the result in different lists:
public void onSuccess(){
list1 = result
}
so how to implement an abstract callback class that could load its
result into a given list/object (- a field of mother class)
(if call by reference would exist in java i would giv list1 as an
parameter for constructor and onSucces would load the result into this
reference?!)
an optimal implementation would be if the result type could be a
generic type: A class lie this:
class GeneralCallbackT implements AsyncCallbackT{
public GeneralCallback(T target){
...
}
public onSuccess(T result){
target = result;
}
}
is it possible to get such an abstract callback class?
--
You received this message because you are subscribed to the Google Groups
Google Web Toolkit group.
To post to this group, send email to google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to
google-web-toolkit+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
--
Magno Machado
Paulohttp://blog.magnomachado.com.brhttp://code.google.com/p/emballo/
--
You received this message because you are subscribed to the Google Groups
Google Web Toolkit group.
To post to this group, send email to google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to
google-web-toolkit+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
Re: need more abstract AsyncCallback class
ok my fault - i tried to use a map - and map isn't a collection.
stupid me
On 12 Apr., 08:05, tanteanni tantea...@hotmail.com wrote:
that doesn't work either :-|. I need something that works on all
collections. Do i need a ? somewhere probably?
On 11 Apr., 16:52, Magno Machado magn...@gmail.com wrote:
Try this:
class LoadMapsE, T extends CollectionE implements
AsyncCallbackT {
On Mon, Apr 11, 2011 at 11:43 AM, tanteanni tantea...@hotmail.com wrote:
meanwhile i tried your suggestions but i am struggling at getting the
right signature:
so i want a callback working of all kinds of collections and adding
the result to the given collection:
at the moment i got this:
private class LoadMapsT extends Collection implements
AsyncCallbackT {
private T target;
protected LoadMaps(T whereTo) {
target = whereTo;
}
@Override
public void onFailure(Throwable caught) {
Window.alert(caught.getMessage());
}
@Override
public void onSuccess(T result) {
target.addAll(result);
}
}
the only problem is now: i can't call the constructor:
MapString, ListString myMap = new HashMapString, ListString();
LoadMaps loadMaps = new LoadMaps(myMap);
--The constructor AdminUnits.LoadMaps(TaskDoneEvent,
MapString,ListString) is undefined
besides this i get Type safety: The method addAll(Collection) belongs
to the raw type Collection. References to generic type CollectionE
should be parameterized in LoadMaps-onSuccess-target.addAll(result)
so how to fix this
On 11 Apr., 14:00, tanteanni tantea...@hotmail.com wrote:
i am fairly new to gwt and struggling some how on correct/nice RPC
implementation (it is working but code becomes ugly). On my first GWT
based apps i often load some lists/data from db into front end. (Lists
to be used in combo boxes for instance).
so if i have a widget that needs 3 different lists (probably
ListString or MapString, String) i specify a service-method for
each list. the problem is to load all those lists, i have to implement
one class (...implements AsyncCallback) for each list.
but the only difference between this implementations is that they load
the result in different lists:
public void onSuccess(){
list1 = result
}
so how to implement an abstract callback class that could load its
result into a given list/object (- a field of mother class)
(if call by reference would exist in java i would giv list1 as an
parameter for constructor and onSucces would load the result into this
reference?!)
an optimal implementation would be if the result type could be a
generic type: A class lie this:
class GeneralCallbackT implements AsyncCallbackT{
public GeneralCallback(T target){
...
}
public onSuccess(T result){
target = result;
}
}
is it possible to get such an abstract callback class?
--
You received this message because you are subscribed to the Google Groups
Google Web Toolkit group.
To post to this group, send email to google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to
google-web-toolkit+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
--
Magno Machado
Paulohttp://blog.magnomachado.com.brhttp://code.google.com/p/emballo/
--
You received this message because you are subscribed to the Google Groups
Google Web Toolkit group.
To post to this group, send email to google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to
google-web-toolkit+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
Re: need more abstract AsyncCallback class
now it is working nearly perfect - only some raw type warnings remain
- how to get rid of them? my signature look now like this:
private class LoadMapsT extends Map implements AsyncCallbackT
i get 2 raw type warnings - one in signature. this one i can eliminate
by adding Map?,? but then target.putAll(result) isn't working
anymore. so how to distribute ? correctly?
On 11 Apr., 14:00, tanteanni tantea...@hotmail.com wrote:
i am fairly new to gwt and struggling some how on correct/nice RPC
implementation (it is working but code becomes ugly). On my first GWT
based apps i often load some lists/data from db into front end. (Lists
to be used in combo boxes for instance).
so if i have a widget that needs 3 different lists (probably
ListString or MapString, String) i specify a service-method for
each list. the problem is to load all those lists, i have to implement
one class (...implements AsyncCallback) for each list.
but the only difference between this implementations is that they load
the result in different lists:
public void onSuccess(){
list1 = result
}
so how to implement an abstract callback class that could load its
result into a given list/object (- a field of mother class)
(if call by reference would exist in java i would giv list1 as an
parameter for constructor and onSucces would load the result into this
reference?!)
an optimal implementation would be if the result type could be a
generic type: A class lie this:
class GeneralCallbackT implements AsyncCallbackT{
public GeneralCallback(T target){
...
}
public onSuccess(T result){
target = result;
}
}
is it possible to get such an abstract callback class?
--
You received this message because you are subscribed to the Google Groups
Google Web Toolkit group.
To post to this group, send email to google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to
google-web-toolkit+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
Re: need more abstract AsyncCallback class
i got it - it is similar with collections:
private static class LoadMapsK,V implements AsyncCallbackMapK,V
{
private MapK,V target;
protected LoadMaps(TaskDoneEvent ev, MapK,V whereTo) {
target = whereTo;
}
@Override
public void onFailure(Throwable caught) {
Window.alert(caught.getMessage());
}
@Override
public void onSuccess(MapK,V result) {
target.putAll(result);
}
}
thx to both of you!
On 11 Apr., 14:00, tanteanni tantea...@hotmail.com wrote:
i am fairly new to gwt and struggling some how on correct/nice RPC
implementation (it is working but code becomes ugly). On my first GWT
based apps i often load some lists/data from db into front end. (Lists
to be used in combo boxes for instance).
so if i have a widget that needs 3 different lists (probably
ListString or MapString, String) i specify a service-method for
each list. the problem is to load all those lists, i have to implement
one class (...implements AsyncCallback) for each list.
but the only difference between this implementations is that they load
the result in different lists:
public void onSuccess(){
list1 = result
}
so how to implement an abstract callback class that could load its
result into a given list/object (- a field of mother class)
(if call by reference would exist in java i would giv list1 as an
parameter for constructor and onSucces would load the result into this
reference?!)
an optimal implementation would be if the result type could be a
generic type: A class lie this:
class GeneralCallbackT implements AsyncCallbackT{
public GeneralCallback(T target){
...
}
public onSuccess(T result){
target = result;
}
}
is it possible to get such an abstract callback class?
--
You received this message because you are subscribed to the Google Groups
Google Web Toolkit group.
To post to this group, send email to google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to
google-web-toolkit+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
Re: need more abstract AsyncCallback class
try this:
public class ListLoaderAsyncCallbackT implements
AsyncCallbackArrayListT {
private final ListT list;
public ListLoaderAsyncCallback(ListT list) {
this.list = list;
}
public void onSuccess(ArrayListT result) {
list.clear();
list.addAll(result);
}
public void onFailure(Throwable caught) {
...
}
}
ListSomeType myList = ;
MyServiceAsync service = ;
service.loadSomeData(new ListLoaderAsyncCallbackSomeType(myList));
On Mon, Apr 11, 2011 at 9:00 AM, tanteanni tantea...@hotmail.com wrote:
i am fairly new to gwt and struggling some how on correct/nice RPC
implementation (it is working but code becomes ugly). On my first GWT
based apps i often load some lists/data from db into front end. (Lists
to be used in combo boxes for instance).
so if i have a widget that needs 3 different lists (probably
ListString or MapString, String) i specify a service-method for
each list. the problem is to load all those lists, i have to implement
one class (...implements AsyncCallback) for each list.
but the only difference between this implementations is that they load
the result in different lists:
public void onSuccess(){
list1 = result
}
so how to implement an abstract callback class that could load its
result into a given list/object (- a field of mother class)
(if call by reference would exist in java i would giv list1 as an
parameter for constructor and onSucces would load the result into this
reference?!)
an optimal implementation would be if the result type could be a
generic type: A class lie this:
class GeneralCallbackT implements AsyncCallbackT{
public GeneralCallback(T target){
...
}
public onSuccess(T result){
target = result;
}
}
is it possible to get such an abstract callback class?
--
You received this message because you are subscribed to the Google Groups
Google Web Toolkit group.
To post to this group, send email to google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to
google-web-toolkit+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
--
Magno Machado Paulo
http://blog.magnomachado.com.br
http://code.google.com/p/emballo/
--
You received this message because you are subscribed to the Google Groups
Google Web Toolkit group.
To post to this group, send email to google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to
google-web-toolkit+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
Re: need more abstract AsyncCallback class
On Mon, Apr 11, 2011 at 8:00 AM, tanteanni tantea...@hotmail.com wrote:
an optimal implementation would be if the result type could be a
generic type: A class lie this:
class GeneralCallbackT implements AsyncCallbackT{
public GeneralCallback(T target){
...
}
public onSuccess(T result){
target = result;
}
}
is it possible to get such an abstract callback class?
Sounds more like you would want an implementation that looked like:
class CollectionLoadingCallbackT implements AsyncCallbackT {
private final CollectionT col;
public CollectionLoadingCallback(CollectionT col) {
this.col = col;
}
public void onSuccess(T result) {
col.add(result);
}
...
}
Of course, I'm sure you'd want another callback to actually know when
the value was received, but the general idea above would work.
--
You received this message because you are subscribed to the Google Groups
Google Web Toolkit group.
To post to this group, send email to google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to
google-web-toolkit+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
Re: need more abstract AsyncCallback class
D'oh! Looks like the offline gmail worked against me. :) Late posting a duplicate suggestion, and I meant to edit it. I was going to say it might be worthwhile to use TakesValueT instead of collection, so you can get the callback semantics in there. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: need more abstract AsyncCallback class
thx both of us: to be sure i understand your suggestion:
using list.add also adds to the list given in constructor? i know
it's probably a java-noob question but why it is different to
onSuccess ... list = result ? (besides that this isn't working ;-))
On 11 Apr., 14:55, Magno Machado magn...@gmail.com wrote:
try this:
public class ListLoaderAsyncCallbackT implements
AsyncCallbackArrayListT {
private final ListT list;
public ListLoaderAsyncCallback(ListT list) {
this.list = list;
}
public void onSuccess(ArrayListT result) {
list.clear();
list.addAll(result);
}
public void onFailure(Throwable caught) {
...
}
}
ListSomeType myList = ;
MyServiceAsync service = ;
service.loadSomeData(new ListLoaderAsyncCallbackSomeType(myList));
On Mon, Apr 11, 2011 at 9:00 AM, tanteanni tantea...@hotmail.com wrote:
i am fairly new to gwt and struggling some how on correct/nice RPC
implementation (it is working but code becomes ugly). On my first GWT
based apps i often load some lists/data from db into front end. (Lists
to be used in combo boxes for instance).
so if i have a widget that needs 3 different lists (probably
ListString or MapString, String) i specify a service-method for
each list. the problem is to load all those lists, i have to implement
one class (...implements AsyncCallback) for each list.
but the only difference between this implementations is that they load
the result in different lists:
public void onSuccess(){
list1 = result
}
so how to implement an abstract callback class that could load its
result into a given list/object (- a field of mother class)
(if call by reference would exist in java i would giv list1 as an
parameter for constructor and onSucces would load the result into this
reference?!)
an optimal implementation would be if the result type could be a
generic type: A class lie this:
class GeneralCallbackT implements AsyncCallbackT{
public GeneralCallback(T target){
...
}
public onSuccess(T result){
target = result;
}
}
is it possible to get such an abstract callback class?
--
You received this message because you are subscribed to the Google Groups
Google Web Toolkit group.
To post to this group, send email to google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to
google-web-toolkit+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
--
Magno Machado
Paulohttp://blog.magnomachado.com.brhttp://code.google.com/p/emballo/
--
You received this message because you are subscribed to the Google Groups
Google Web Toolkit group.
To post to this group, send email to google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to
google-web-toolkit+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
Re: need more abstract AsyncCallback class
why it is different to onSuccess ... list = result ? (besides that this
isn't working ;-))
1. list = result implies that your callback has a reference to the object
that is holding the list. Maybe it would be a problem for you, maybe not
2. list = result will make the list variable point to a new object. If
you have any other object holding a reference to the previous list object,
it will still point to that object after the assignment, so it won't see the
objects that came from the rpc call
On Mon, Apr 11, 2011 at 10:44 AM, tanteanni tantea...@hotmail.com wrote:
thx both of us: to be sure i understand your suggestion:
using list.add also adds to the list given in constructor? i know
it's probably a java-noob question but why it is different to
onSuccess ... list = result ? (besides that this isn't working ;-))
On 11 Apr., 14:55, Magno Machado magn...@gmail.com wrote:
try this:
public class ListLoaderAsyncCallbackT implements
AsyncCallbackArrayListT {
private final ListT list;
public ListLoaderAsyncCallback(ListT list) {
this.list = list;
}
public void onSuccess(ArrayListT result) {
list.clear();
list.addAll(result);
}
public void onFailure(Throwable caught) {
...
}
}
ListSomeType myList = ;
MyServiceAsync service = ;
service.loadSomeData(new ListLoaderAsyncCallbackSomeType(myList));
On Mon, Apr 11, 2011 at 9:00 AM, tanteanni tantea...@hotmail.com
wrote:
i am fairly new to gwt and struggling some how on correct/nice RPC
implementation (it is working but code becomes ugly). On my first GWT
based apps i often load some lists/data from db into front end. (Lists
to be used in combo boxes for instance).
so if i have a widget that needs 3 different lists (probably
ListString or MapString, String) i specify a service-method for
each list. the problem is to load all those lists, i have to implement
one class (...implements AsyncCallback) for each list.
but the only difference between this implementations is that they load
the result in different lists:
public void onSuccess(){
list1 = result
}
so how to implement an abstract callback class that could load its
result into a given list/object (- a field of mother class)
(if call by reference would exist in java i would giv list1 as an
parameter for constructor and onSucces would load the result into this
reference?!)
an optimal implementation would be if the result type could be a
generic type: A class lie this:
class GeneralCallbackT implements AsyncCallbackT{
public GeneralCallback(T target){
...
}
public onSuccess(T result){
target = result;
}
}
is it possible to get such an abstract callback class?
--
You received this message because you are subscribed to the Google
Groups
Google Web Toolkit group.
To post to this group, send email to
google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to
google-web-toolkit+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
--
Magno Machado Paulohttp://blog.magnomachado.com.brhttp://
code.google.com/p/emballo/
--
You received this message because you are subscribed to the Google Groups
Google Web Toolkit group.
To post to this group, send email to google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to
google-web-toolkit+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
--
Magno Machado Paulo
http://blog.magnomachado.com.br
http://code.google.com/p/emballo/
--
You received this message because you are subscribed to the Google Groups
Google Web Toolkit group.
To post to this group, send email to google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to
google-web-toolkit+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
Re: need more abstract AsyncCallback class
On Mon, Apr 11, 2011 at 9:44 AM, tanteanni tantea...@hotmail.com wrote: using list.add also adds to the list given in constructor? i know it's probably a java-noob question but why it is different to onSuccess ... list = result ? (besides that this isn't working ;-)) Wow... this is so much easier to describe with paper and some drawings. :) You were on to it with the by-value versus by-reference question. By passing the collection, anyone can add to it if they have a copy of your reference. What they can not do is modify the original reference to point to a new collection. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: need more abstract AsyncCallback class
Try this:
class LoadMapsE, T extends CollectionE implements
AsyncCallbackT {
On Mon, Apr 11, 2011 at 11:43 AM, tanteanni tantea...@hotmail.com wrote:
meanwhile i tried your suggestions but i am struggling at getting the
right signature:
so i want a callback working of all kinds of collections and adding
the result to the given collection:
at the moment i got this:
private class LoadMapsT extends Collection implements
AsyncCallbackT {
private T target;
protected LoadMaps(T whereTo) {
target = whereTo;
}
@Override
public void onFailure(Throwable caught) {
Window.alert(caught.getMessage());
}
@Override
public void onSuccess(T result) {
target.addAll(result);
}
}
the only problem is now: i can't call the constructor:
MapString, ListString myMap = new HashMapString, ListString();
LoadMaps loadMaps = new LoadMaps(myMap);
--The constructor AdminUnits.LoadMaps(TaskDoneEvent,
MapString,ListString) is undefined
besides this i get Type safety: The method addAll(Collection) belongs
to the raw type Collection. References to generic type CollectionE
should be parameterized in LoadMaps-onSuccess-target.addAll(result)
so how to fix this
On 11 Apr., 14:00, tanteanni tantea...@hotmail.com wrote:
i am fairly new to gwt and struggling some how on correct/nice RPC
implementation (it is working but code becomes ugly). On my first GWT
based apps i often load some lists/data from db into front end. (Lists
to be used in combo boxes for instance).
so if i have a widget that needs 3 different lists (probably
ListString or MapString, String) i specify a service-method for
each list. the problem is to load all those lists, i have to implement
one class (...implements AsyncCallback) for each list.
but the only difference between this implementations is that they load
the result in different lists:
public void onSuccess(){
list1 = result
}
so how to implement an abstract callback class that could load its
result into a given list/object (- a field of mother class)
(if call by reference would exist in java i would giv list1 as an
parameter for constructor and onSucces would load the result into this
reference?!)
an optimal implementation would be if the result type could be a
generic type: A class lie this:
class GeneralCallbackT implements AsyncCallbackT{
public GeneralCallback(T target){
...
}
public onSuccess(T result){
target = result;
}
}
is it possible to get such an abstract callback class?
--
You received this message because you are subscribed to the Google Groups
Google Web Toolkit group.
To post to this group, send email to google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to
google-web-toolkit+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
--
Magno Machado Paulo
http://blog.magnomachado.com.br
http://code.google.com/p/emballo/
--
You received this message because you are subscribed to the Google Groups
Google Web Toolkit group.
To post to this group, send email to google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to
google-web-toolkit+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
