Cristiano Gavião created FELIX-6015:
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Summary: IndexOutOfBoundsException due a missing
HostNamespace.HOST_NAMESPACE
Key: FELIX-6015
URL: https://issues.apache.org/jira/browse/FELIX-6015
Project: Felix
Issue Type: Bug
Components: Resolver
Affects Versions: resolver-1.16.0
Reporter: Cristiano Gavião
When creating a custom ResolveContext we need to build a collection of
mandatory resources using the method getMandatoryResources().
Normally we will create such collection using a custom built Resource
containing only a IdentityNamespace.IDENTITY_NAMESPACE capability, because it
is enough in order to search for more details of such resource in the installed
bundles/fragments or in the registered bundle repositories inside the
findProviders() method.
The error that I'm getting is due the fact that the resolver, most precisely,
the Candidates class is using getMandatoryResources() after the
getInitialCandidates(session) been executed and inferring that it has a
information about fragments that it doesn't have.
{code:java}
public Map<Resource, Resource> getRootHosts()
{
Map<Resource, Resource> hosts = new LinkedHashMap<Resource, Resource>();
for (Resource res : *m_session.getMandatoryResources()*)
{
addHost(res, hosts);
}
for (Resource res : m_session.getOptionalResources())
{
if (isPopulated(res)) {
addHost(res, hosts);
}
}
return hosts;
}
{code}
{code:java}
private void addHost(Resource res, Map<Resource, Resource> hosts) {
if (res instanceof WrappedResource)
{
res = ((WrappedResource) res).getDeclaredResource();
}
if (!Util.isFragment(res))
{
hosts.put(res, getWrappedHost(res));
} else {
// The error is happening here:
*Requirement hostReq =
res.getRequirements(HostNamespace.HOST_NAMESPACE).get(0);*
Capability hostCap = getFirstCandidate(hostReq);
// If the resource is an already resolved fragment and can not
// be attached to new hosts, there will be no matching host,
// so ignore this resource
if (hostCap != null) {
res = getWrappedHost(hostCap.getResource());
if (res instanceof WrappedResource) {
hosts.put(((WrappedResource) res).getDeclaredResource(),
res);
}
}
}
}
{code}
Wouldn't be possible to use the processed initial candidates resources instead ?
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