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Interface implementors [message #220784]

Fri, 16 December 2005 13:56

Eclipse User

Originally posted by: awalkden.alaric.co.uk

Apologies if I've missed an obvious solution, but is there a way of
getting eclipse to present me with all classes in a (java) project that
implement a given interface, or extend a given class? I could ask for
References in the project, but that drags back all objects of that type
that are declared too.
Thanks in advance,
Andrew.

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Re: Interface implementors [message #220798 is a reply to message #220784]

Fri, 16 December 2005 14:12

Ricky

Messages: 204
Registered: July 2009

Senior Member

> Apologies if I've missed an obvious solution, but is there a way of
> getting eclipse to present me with all classes in a (java) project that
> implement a given interface, or extend a given class?

Try "Open Type Hierarchy" (context menu) or F4 when your cursor is on a
type like a class name.

hth,

Ricky

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Re: Interface implementors [message #220805 is a reply to message #220784]

Fri, 16 December 2005 14:14

Eclipse User

Originally posted by: olaf.delgado.web.de

Andrew Walkden wrote:
> Apologies if I've missed an obvious solution, but is there a way of
> getting eclipse to present me with all classes in a (java) project that
> implement a given interface, or extend a given class? I could ask for
> References in the project, but that drags back all objects of that type
> that are declared too.
> Thanks in advance,
> Andrew.

In the Package Explorer, right-click on the class name, then select
"Open Type Hierarchy".

Cheers
O.

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Re: Interface implementors [message #220812 is a reply to message #220798]

Fri, 16 December 2005 14:41

Tom Hofmann

Messages: 770
Registered: July 2009

Senior Member

Ricky wrote:
>> Apologies if I've missed an obvious solution, but is there a way of
>> getting eclipse to present me with all classes in a (java) project
>> that implement a given interface, or extend a given class?
>
> Try "Open Type Hierarchy" (context menu) or F4 when your cursor is on a
> type like a class name.

Or, as a lightweight alternative, press Ctrl+T or choose Navigate >
Quick Type Hierarchy, which will open a quick view that you can navigate
through and filter.

-tom

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Re: Interface implementors [message #220818 is a reply to message #220812]

Fri, 16 December 2005 20:36

Eclipse User

Originally posted by: tonychen.ca.ibm.com

What API should I use to do the same?

Tony

Tom Eicher wrote:
> Ricky wrote:
>
>>> Apologies if I've missed an obvious solution, but is there a way of
>>> getting eclipse to present me with all classes in a (java) project
>>> that implement a given interface, or extend a given class?
>>
>>
>> Try "Open Type Hierarchy" (context menu) or F4 when your cursor is on
>> a type like a class name.
>
>
> Or, as a lightweight alternative, press Ctrl+T or choose Navigate >
> Quick Type Hierarchy, which will open a quick view that you can navigate
> through and filter.
>
> -tom

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Re: Interface implementors [message #220824 is a reply to message #220818]

Fri, 16 December 2005 22:15

Andreas Herz

Messages: 196
Registered: July 2009

Senior Member

my solution...

Greetings

Andreas

public static IType[] getAllSubtypes(String superClassName, IJavaProject project,
IProgressMonitor pm) throws Exception
{
IType parentType=project.findType(superClassName);
ITypeHierarchy h=parentType.newTypeHierarchy(project,pm);
IType[] types=h.getAllSubtypes(parentType);
IType[] t2=new IType[types.length+1];
t2[0]=parentType;

return t2;
}

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Re: Interface implementors [message #220831 is a reply to message #220824]

Fri, 16 December 2005 22:18

Andreas Herz

Messages: 196
Registered: July 2009

Senior Member

oh - BAD typo during cut&past from my code.

better (?)

public static IType[] getAllSubtypes(String superClassName, IJavaProject
project, IProgressMonitor pm) throws Exception
{
IType parentType=project.findType(superClassName);
ITypeHierarchy h=parentType.newTypeHierarchy(project,pm);
return h.getAllSubtypes(parentType);
}

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Re: Interface implementors [message #220955 is a reply to message #220812]

Tue, 20 December 2005 21:13

Eclipse User

Originally posted by: eclipse3.rizzoweb.com

Tom Eicher wrote:
> Ricky wrote:
>
>>> Apologies if I've missed an obvious solution, but is there a way of
>>> getting eclipse to present me with all classes in a (java) project
>>> that implement a given interface, or extend a given class?
>>
>>
>> Try "Open Type Hierarchy" (context menu) or F4 when your cursor is on
>> a type like a class name.
>
>
> Or, as a lightweight alternative, press Ctrl+T or choose Navigate >
> Quick Type Hierarchy, which will open a quick view that you can navigate
> through and filter.

My preferred method: Right-click on an interface name in the Package
Explorer or Types view and choose Implementors...

You can assign a keyboard shortcut for this action; it is in the Search
category in the Keys preferences.

HTH,
Eric

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