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Posted to dev@cayenne.apache.org by "Scott Anderson (JIRA)" <de...@cayenne.apache.org> on 2007/12/15 00:29:43 UTC

[JIRA] Created: (CAY-942) Generic types

Generic types
-------------

                 Key: CAY-942
                 URL: https://issues.apache.org/cayenne/browse/CAY-942
             Project: Cayenne
          Issue Type: Improvement
            Reporter: Scott Anderson
            Assignee: Andrus Adamchik
            Priority: Minor


I realize that this would restrict functionality to Java 5+, but I still believe it would be a good option to have for the code generator in the modeler:

Add, as an option, generic types to Lists in generated classes. It's quite annoying to have to cast types; much of my code looks like this:
for(Object o : someObject.getSomeManyToManyField()) {
    TheTypeIWanted ttiw = (TheTypeIWanted) o;
    ...
}

With generics, it would be:
for(TheTypeIWanted ttiw : someObject.getSomeManyToManyField()) {
    ...
}

It'd also be nice if the core libraries had generics. For example, "Object DataObjectUtils.objectForPk(Class, int)" could be changed to "T DataObjectUtils.objectForPk(Class<T>, int)" to avoid casting.

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[JIRA] Closed: (CAY-942) Generic types

Posted by "Ari Maniatis (JIRA)" <de...@cayenne.apache.org>.
     [ https://issues.apache.org/cayenne/browse/CAY-942?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ari Maniatis closed CAY-942.
----------------------------

       Resolution: Fixed
    Fix Version/s: 3.0
         Assignee: Ari Maniatis  (was: Andrus Adamchik)

Generics have already been implemented in trunk and many will be available in 3.0M3. This is ongoing work and more needs to be done over time, but a large part of this is complete.

> Generic types
> -------------
>
>                 Key: CAY-942
>                 URL: https://issues.apache.org/cayenne/browse/CAY-942
>             Project: Cayenne
>          Issue Type: Improvement
>            Reporter: Scott Anderson
>            Assignee: Ari Maniatis
>            Priority: Minor
>             Fix For: 3.0
>
>
> I realize that this would restrict functionality to Java 5+, but I still believe it would be a good option to have for the code generator in the modeler:
> Add, as an option, generic types to Lists in generated classes. It's quite annoying to have to cast types; much of my code looks like this:
> for(Object o : someObject.getSomeManyToManyField()) {
>     TheTypeIWanted ttiw = (TheTypeIWanted) o;
>     ...
> }
> With generics, it would be:
> for(TheTypeIWanted ttiw : someObject.getSomeManyToManyField()) {
>     ...
> }
> It'd also be nice if the core libraries had generics. For example, "Object DataObjectUtils.objectForPk(Class, int)" could be changed to "T DataObjectUtils.objectForPk(Class<T>, int)" to avoid casting.

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[JIRA] Commented: (CAY-942) Generic types

Posted by "Ari Maniatis (JIRA)" <de...@cayenne.apache.org>.
    [ https://issues.apache.org/cayenne/browse/CAY-942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12741#action_12741 ] 

Ari Maniatis commented on CAY-942:
----------------------------------

Yes, it will be done, but the best way forward isn't 100% clear yet. See this for discussion:

http://markmail.org/message/sewk6jevobnkc6jz

> Generic types
> -------------
>
>                 Key: CAY-942
>                 URL: https://issues.apache.org/cayenne/browse/CAY-942
>             Project: Cayenne
>          Issue Type: Improvement
>            Reporter: Scott Anderson
>            Assignee: Ari Maniatis
>            Priority: Minor
>             Fix For: 3.0
>
>
> I realize that this would restrict functionality to Java 5+, but I still believe it would be a good option to have for the code generator in the modeler:
> Add, as an option, generic types to Lists in generated classes. It's quite annoying to have to cast types; much of my code looks like this:
> for(Object o : someObject.getSomeManyToManyField()) {
>     TheTypeIWanted ttiw = (TheTypeIWanted) o;
>     ...
> }
> With generics, it would be:
> for(TheTypeIWanted ttiw : someObject.getSomeManyToManyField()) {
>     ...
> }
> It'd also be nice if the core libraries had generics. For example, "Object DataObjectUtils.objectForPk(Class, int)" could be changed to "T DataObjectUtils.objectForPk(Class<T>, int)" to avoid casting.

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[JIRA] Commented: (CAY-942) Generic types

Posted by "Scott Anderson (JIRA)" <de...@cayenne.apache.org>.
    [ https://issues.apache.org/cayenne/browse/CAY-942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12740#action_12740 ] 

Scott Anderson commented on CAY-942:
------------------------------------

Awesome; I've built the library from SVN, and have fell in love with it - great work!

Are there any plans to add generics to the Query objects?

> Generic types
> -------------
>
>                 Key: CAY-942
>                 URL: https://issues.apache.org/cayenne/browse/CAY-942
>             Project: Cayenne
>          Issue Type: Improvement
>            Reporter: Scott Anderson
>            Assignee: Ari Maniatis
>            Priority: Minor
>             Fix For: 3.0
>
>
> I realize that this would restrict functionality to Java 5+, but I still believe it would be a good option to have for the code generator in the modeler:
> Add, as an option, generic types to Lists in generated classes. It's quite annoying to have to cast types; much of my code looks like this:
> for(Object o : someObject.getSomeManyToManyField()) {
>     TheTypeIWanted ttiw = (TheTypeIWanted) o;
>     ...
> }
> With generics, it would be:
> for(TheTypeIWanted ttiw : someObject.getSomeManyToManyField()) {
>     ...
> }
> It'd also be nice if the core libraries had generics. For example, "Object DataObjectUtils.objectForPk(Class, int)" could be changed to "T DataObjectUtils.objectForPk(Class<T>, int)" to avoid casting.

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[JIRA] Commented: (CAY-942) Generic types

Posted by "Scott Anderson (JIRA)" <de...@cayenne.apache.org>.
    [ https://issues.apache.org/cayenne/browse/CAY-942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12633 ] 

Scott Anderson commented on CAY-942:
------------------------------------

This would also have the advantage of restricting the class passed to objectForPk to a Class<? extends CayenneDataObject>

public static <T extends CayenneDataObject> T objectForPk(Class<T> type, int pk);

> Generic types
> -------------
>
>                 Key: CAY-942
>                 URL: https://issues.apache.org/cayenne/browse/CAY-942
>             Project: Cayenne
>          Issue Type: Improvement
>            Reporter: Scott Anderson
>            Assignee: Andrus Adamchik
>            Priority: Minor
>
> I realize that this would restrict functionality to Java 5+, but I still believe it would be a good option to have for the code generator in the modeler:
> Add, as an option, generic types to Lists in generated classes. It's quite annoying to have to cast types; much of my code looks like this:
> for(Object o : someObject.getSomeManyToManyField()) {
>     TheTypeIWanted ttiw = (TheTypeIWanted) o;
>     ...
> }
> With generics, it would be:
> for(TheTypeIWanted ttiw : someObject.getSomeManyToManyField()) {
>     ...
> }
> It'd also be nice if the core libraries had generics. For example, "Object DataObjectUtils.objectForPk(Class, int)" could be changed to "T DataObjectUtils.objectForPk(Class<T>, int)" to avoid casting.

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