Package org.apache.felix.bundlerepository

Interface RepositoryAdmin

All Known Implementing Classes:

RepositoryAdminImpl

public interface RepositoryAdmin

Provides centralized access to the distributed repository. A repository contains a set of resources. A resource contains a number of fixed attributes (name, version, etc) and sets of:

1. Capabilities - Capabilities provide a named aspect: a bundle, a display, memory, etc.
2. Requirements - A named filter expression. The filter must be satisfied by one or more Capabilities with the given name. These capabilities can come from other resources or from the platform. If multiple resources provide the requested capability, one is selected. (### what algorithm? ###)
3. Requests - Requests are like requirements, except that a request can be fulfilled by 0..n resources. This feature can be used to link to resources that are compatible with the given resource and provide extra functionality. For example, a bundle could request all its known fragments. The UI associated with the repository could list these as optional downloads.

Version:

$Revision: 1.3 $

Method Summary

Modifier and Type	Method	Description
Repository	addRepository(String repository)	Add a new repository to the federation.
Repository	addRepository(URL repository)	Add a new repository to the federation.
Resource[]	discoverResources(String filterExpr)	Discover any resources that match the given filter.
Resource[]	discoverResources(Requirement[] requirements)	Discover any resources that match the given requirements.
DataModelHelper	getHelper()	Return a helper to perform various operations on the data model
Repository	getLocalRepository()	Return the repository containing locally installed resources
Repository	getSystemRepository()	Return the repository containing the system bundle
Repository[]	listRepositories()	List all the repositories.
boolean	removeRepository(String repository)	Remove a repository from the federation The url must point to a repository XML file.
Resolver	resolver()	Create a resolver.
Resolver	resolver(Repository[] repositories)	Create a resolver on the given repositories.

Method Detail

discoverResources

Resource[] discoverResources(String filterExpr)
                      throws org.osgi.framework.InvalidSyntaxException

Discover any resources that match the given filter. This is not a detailed search, but a first scan of applicable resources. ### Checking the capabilities of the filters is not possible because that requires a new construct in the filter. The filter expression can assert any of the main headers of the resource. The attributes that can be checked are:

1. name
2. version (uses filter matching rules)
3. description
4. category
5. copyright
6. license
7. source

Parameters:

filterExpr - A standard OSGi filter

Returns:

List of resources matching the filters.

Throws:

org.osgi.framework.InvalidSyntaxException

discoverResources

Resource[] discoverResources(Requirement[] requirements)

Discover any resources that match the given requirements.

Parameters:

requirements -

Returns:

List of resources matching the filter

resolver

Resolver resolver()

Create a resolver.

Returns:

resolver

Resolver resolver(Repository[] repositories)

Create a resolver on the given repositories.

Parameters:

repositories - the list of repositories to use for the resolution

Returns:

addRepository

Repository addRepository(String repository)
                  throws Exception

Add a new repository to the federation. The url must point to a repository XML file.

Parameters:

repository -

Returns:

Throws:

Exception

addRepository

Repository addRepository(URL repository)
                  throws Exception

Add a new repository to the federation. The url must point to a repository XML file.

Parameters:

repository -

Returns:

Throws:

Exception

removeRepository

boolean removeRepository(String repository)

Remove a repository from the federation The url must point to a repository XML file.

Parameters:

repository -

Returns:

listRepositories

Repository[] listRepositories()

List all the repositories.

Returns:

getSystemRepository

Repository getSystemRepository()

Return the repository containing the system bundle

Returns:

getLocalRepository

Repository getLocalRepository()

Return the repository containing locally installed resources

Returns:

getHelper

DataModelHelper getHelper()

Return a helper to perform various operations on the data model

Returns: