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how to load external xml file without using eclipse registry [message #800457]

Fri, 17 February 2012 05:00

Deenadayalan Missing name

Messages: 3
Registered: June 2011

Junior Member

1. I created an extension point schema in RCP plugin. => rcp bundle-1
2. Created another RCP Plugin, added the above extension (extension point schema) under 'extensions' to update the plugin.xml. => rcp bundle-2

3. Using IExtensionRegistry the rcp bundle-1 is able to load the rcp bundle-2 (IConfigurationElement).

I just want to avoid the 'extension registry' mechanism and jar file to load the bundle-2 that means, i will have only the plugin.xml file at some directory path, the rcp bundle-1 will need to get the 'absolute path for plugin.xml' and load that as external resource so that i can avoid the 'extension registry & jar' mechanism.

any ideas?

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Re: how to load external xml file without using eclipse registry [message #800672 is a reply to message #800457]

Fri, 17 February 2012 10:41

Daniel KrÃ¼gler

Messages: 853
Registered: July 2009

Senior Member

On 2012-02-17 06:01, Deenadayalan Mising name wrote:
> 1. I created an extension point schema in RCP plugin. => rcp bundle-1
> 2. Created another RCP Plugin, added the above extension (extension
> point schema) under 'extensions' to update the plugin.xml. => rcp bundle-2
>
> 3. Using IExtensionRegistry the rcp bundle-1 is able to load the rcp
> bundle-2 (IConfigurationElement).
>
>
> I just want to avoid the 'extension registry' mechanism and jar file to
> load the bundle-2 that means, i will have only the plugin.xml file at
> some directory path, the rcp bundle-1 will need to get the 'absolute
> path for plugin.xml' and load that as external resource so that i can
> avoid the 'extension registry & jar' mechanism.

I don't understand what you are trying to do. What is wrong with the
extension point API? You better describe what you *actually* want to do
instead of trying to bypass the API.

Greetings from Bremen,

Daniel Krügler

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Re: how to load external xml file without using eclipse registry [message #801238 is a reply to message #800672]

Sat, 18 February 2012 04:09

Deenadayalan Missing name

Messages: 3
Registered: June 2011

Junior Member

Hi,

nothing wrong with the extension API, but i have requirement that the external resource needs to be loaded in runtime on the need basis.

For example, if i have 10 extension point (referring to step-2) all of them would be .jar file and that can be loaded in runtime on the need basis (dynamically). if my user create a plugin.xml based on my extension point schema then i need to be able to load that plugin.xml alone in to my product, how to load external resource?

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Re: how to load external xml file without using eclipse registry [message #801537 is a reply to message #801238]

Sat, 18 February 2012 15:07

Brian de Alwis

Messages: 242
Registered: July 2009

Senior Member

See IExtensionRegistry#addContribution()

http://help.eclipse.org/indigo/topic/org.eclipse.platform.doc.isv/reference/api/org/eclipse/core/runtime/IExtensionRegistry.html#addContribution(java.io.InputStream,%20org.eclipse.core.runtime.IContributor,%20boolean,%20java.lang.String,%20java.util.ResourceBundle,%20java.lang.Object)

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Re: how to load external xml file without using eclipse registry [message #808437 is a reply to message #801537]

Mon, 27 February 2012 19:44

Paul Webster

Messages: 6859
Registered: July 2009
Location: Ottawa

Senior Member

As Brian mentions, there is a way to suck in an IExtensionRegistry fragment, but is that really what you want?

Are you saying that you want a user to be able to provide an implementation of your extension point at some time. So your application would be running, they would point you to their plugin, and you would load everything dynamically?

PW

Paul Webster
http://wiki.eclipse.org/Platform_Command_Framework
http://wiki.eclipse.org/Command_Core_Expressions
http://wiki.eclipse.org/Menu_Contributions

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