org.jboss.osgi.resolver.spi

Class AbstractResolver

java.lang.Object

org.jboss.osgi.resolver.spi.AbstractResolver

All Implemented Interfaces:

XResolver, Resolver

public class AbstractResolver
extends Object
implements XResolver

An implementation of the Resolver.

Since:

31-May-2010

Author:

thomas.diesler@jboss.com

Constructor Summary

Constructors

Constructor and Description
AbstractResolver()

Method Summary

Methods

Modifier and Type	Method and Description
XResolveContext	createResolveContext(XEnvironment env, Collection<? extends org.osgi.resource.Resource> mandatory, Collection<? extends org.osgi.resource.Resource> optional)
Map<org.osgi.resource.Resource,List<org.osgi.resource.Wire>>	resolve(ResolveContext resolveContext) Resolve the specified resolve context and return any new resources and wires to the caller.
Map<org.osgi.resource.Resource,List<org.osgi.resource.Wire>>	resolveAndApply(XResolveContext context)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractResolver

public AbstractResolver()

Method Detail

createResolveContext

public XResolveContext createResolveContext(XEnvironment env,
                                   Collection<? extends org.osgi.resource.Resource> mandatory,
                                   Collection<? extends org.osgi.resource.Resource> optional)

Specified by:

createResolveContext in interface XResolver

resolve

public Map<org.osgi.resource.Resource,List<org.osgi.resource.Wire>> resolve(ResolveContext resolveContext)
                                                                     throws ResolutionException

Description copied from interface: Resolver

Resolve the specified resolve context and return any new resources and wires to the caller.

The resolver considers two groups of resources:

• Mandatory - any resource in the mandatory group must be resolved. A failure to satisfy any mandatory requirement for these resources will result in throwing a ResolutionException
• Optional - any resource in the optional group may be resolved. A failure to satisfy a mandatory requirement for a resource in this group will not fail the overall resolution but no resources or wires will be returned for that resource.

The resolve method returns the delta between the start state defined by ResolveContext.getWirings() and the end resolved state. That is, only new resources and wires are included.

The behavior of the resolver is not defined if the specified resolve context supplies inconsistent information.

Specified by:

resolve in interface Resolver

Parameters:

resolveContext - The resolve context for the resolve operation. Must not be null.

Returns:

The new resources and wires required to satisfy the specified resolve context. The returned map is the property of the caller and can be modified by the caller.

Throws:

ResolutionException - If the resolution cannot be satisfied.

resolveAndApply

public Map<org.osgi.resource.Resource,List<org.osgi.resource.Wire>> resolveAndApply(XResolveContext context)
                                                                             throws ResolutionException

Specified by:

resolveAndApply in interface XResolver

Throws:

ResolutionException