# CDO View Providers

###### Identifier:

org.eclipse.emf.cdo.viewProviders

###### Since:

2.0.0

###### Description:

This extension point is used to define the CDOViewProvider factories that create instances capable of handling URIs according to the defined regular expression. This is registered to a global CDOViewProviderFactory Registry `CDOViewProviderFactory.INSTANCE`

###### Configuration Markup:

<!ELEMENT extension (viewProvider+)>

<!ATTLIST extension

point CDATA #REQUIRED

id CDATA #IMPLIED

name CDATA #IMPLIED>

<!ELEMENT viewProvider EMPTY>

<!ATTLIST viewProvider

class CDATA #REQUIRED

regex CDATA #REQUIRED

priority CDATA "500">

- class -
- regex -
- priority -

###### Examples:

Following is an example of how a URI scheme can be registered:

      <viewprovider factory="org.eclipse.emf.cdo.util.DefaultCDOViewProvider$DefaultCDOViewProviderFactory"
       high_priority="false"
       regex="cdo.*">
      </viewprovider>

###### API Information:

The value of the class attribute must represent a class that implements `org.eclipse.emf.ecore.resource.Resource.Factory`.

A URI scheme can be also registered from the source code with the `Resource.Factory.Registry.INSTANCE` as follows:

      Resource.Factory.Registry.INSTANCE.putFactory(new DefaultCDOViewProviderFactory(), "cdo.*", "false");

###### Supplied Implementation:

org.eclipse.emf.cdo.util.DefaultCDOViewProvider$DefaultCDOViewProviderFactory provides default stub implementation. org.eclipse.emf.cdo.internal.ui.preferences.PreferencesCDOViewProvider.PreferencesCDOViewProviderFactory creates a provider that opens views according to a preference-page based repository URI list.

Copyright (c) 2008, 2009, 2012 Eike Stepper (Berlin, Germany) and others.
All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse Public License v1.0 which accompanies this distribution, and is available at http://www.eclipse.org/legal/epl-v10.html