This would be my suggestion of how to make this work.
Chuck
On 2013-06-07, at 4:34 AM, Musall Maik wrote:
> Good one!
>
> Although this isn't exactly reducing boilerplate, it shows up a completely
> different way that actually works. I didn't really think of implementing
> NSKeyValueCoding in an enum class. I think this is worthwhile at least for
> long complicated enums where two more methods are ok. Thanks!
>
> Anyone else? :)
>
> Maik
>
>
> Am 07.06.2013 um 13:16 schrieb Bogdan Zlatanov <bogdan.zlata...@gmail.com>:
>
>> And this is a more general way, but you probably guessed that already :)
>>
>> public enum Status implements NSKeyValueCoding {
>> one {
>> @Override public String description() { return "one"; }
>> @Override public Integer code() { return 1; }
>> },
>> two {
>> @Override public String description() { return "two"; }
>> @Override public Integer code() { return 2; }
>> };
>>
>> public abstract String description();
>> public abstract Integer code();
>>
>> @Override
>> public Object valueForKey(String s) {
>> System.out.println("Status.valueForKey(): " + s);
>> try {
>> return this.getClass().getMethod(s, (Class<?>[])
>> null).invoke(this, (Object[]) null);
>> } catch (Exception e) {
>> e.printStackTrace();
>> throw new RuntimeException(e);
>> }
>> }
>>
>> @Override
>> public void takeValueForKey(Object obj, String s) {
>> // TODO Auto-generated method stub
>> System.out.println("Status.takeValueForKey()");
>> }
>> }
>>
>> On 7 Jun 2013, at 13:07, Bogdan Zlatanov wrote:
>>
>>> This should work, hopefully.
>>>
>>> public enum Status implements NSKeyValueCoding {
>>> one { @Override public String description() { return "one"; }},
>>> two { @Override public String description() { return "two"; }};
>>> public abstract String description();
>>>
>>> @Override
>>> public Object valueForKey(String s) {
>>> System.out.println("Status.valueForKey(): " + s);
>>> return description();
>>> }
>>>
>>> @Override
>>> public void takeValueForKey(Object obj, String s) {
>>> // TODO Auto-generated method stub
>>> System.out.println("Status.takeValueForKey()");
>>> }
>>> }
>>>
>>> On 7 Jun 2013, at 12:34, Musall Maik wrote:
>>>
>>>>
>>>> Got that already by private mail. All right, let's modify the example.
>>>> Returning a fixed string was oversimplifying.
>>>>
>>>>
>>>> public enum Status {
>>>> one { @Override public DateTime computeValue() { new
>>>> DateTime().plusDays( 1 ); },
>>>> two { @Override public DateTime computeValue() { new
>>>> DateTime().plusDays( 2 ); };
>>>> public abstract DateTime computeValue();
>>>> }
>>>>
>>>>
>>>> Maik
>>>>
>>>>
>>>> Am 07.06.2013 um 12:27 schrieb D Tim Cummings <t...@triptera.com.au>:
>>>>
>>>>> Another workaround which is less ugly.
>>>>>
>>>>> public enum Status {
>>>>> one ("eins"),
>>>>> two ("zwei");
>>>>> private final String description;
>>>>> Status(String description) {
>>>>> this.description = description;
>>>>> }
>>>>> public String description() {
>>>>> return description;
>>>>> }
>>>>> }
>>>>>
>>>>> Tim
>>>>>
>>>>>
>>>>> On 07/06/2013, at 5:58 PM, Musall Maik wrote:
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> some time ago, I discovered the following problem with Enums and WO
>>>>>> bindings (broken down to a simple example):
>>>>>>
>>>>>> package com.foo.bar;
>>>>>> public class MyClass {
>>>>>> public static enum Status {
>>>>>> one { @Override public String description() { return
>>>>>> "eins"; } },
>>>>>> two { @Override public String description() { return
>>>>>> "zwei"; } };
>>>>>> public abstract String description();
>>>>>> }
>>>>>> }
>>>>>>
>>>>>> While this works nicely in all Java code, WO bindings will not see the
>>>>>> overridden description() implementations. At least not when using Java
>>>>>> packages (it seems to work if everything is in the default package, but
>>>>>> that doesn't help me). You get an error like:
>>>>>>
>>>>>> java.lang.IllegalAccessException: Class
>>>>>> com.webobjects.foundation.NSKeyValueCoding$ValueAccessor$1 can not access
>>>>>> a member of class com.foo.bar.MyClass$Status$1 with modifiers "public"
>>>>>>
>>>>>> or, if using JRebel, you get
>>>>>>
>>>>>> java.lang.IllegalAccessException: Class<?>
>>>>>> com.webobjects.foundation.NSKeyValueCoding$ValueAccessor$1 can not access
>>>>>> com.foo.bar.MyClass$Status$1!
>>>>>>
>>>>>> My current workaround:
>>>>>>
>>>>>> package com.foo.bar;
>>>>>> public class MyClass {
>>>>>> public static enum Status {
>>>>>> one { @Override String descriptionImpl() { return "eins";
>>>>>> } },
>>>>>> two { @Override String descriptionImpl() { return "zwei";
>>>>>> } };
>>>>>> abstract String descriptionImpl();
>>>>>> public String description() { return descriptionImpl(); }
>>>>>> }
>>>>>> }
>>>>>>
>>>>>> which works but is ugly. Now I'm about to implement another Enum with a
>>>>>> lot of methods and it bothers me. Anyone an idea how to improve the
>>>>>> situation?
>>>>>>
>>>>>> Thanks
>>>>>> Maik
>>>>>> _______________________________________________
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>>>>>>
>>>>>> This email sent to t...@triptera.com.au
>>>>>
>>>>
>>>> _______________________________________________
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>>>>
>>>> This email sent to bogdan.zlata...@gmail.com
>>>
>>
>
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Chuck Hill
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