/// <summary>
/// Reloads the internal SPI list.
/// Changes to the service list are visible after the method ends, all
/// iterators (e.g, from <see cref="AvailableServices"/>,...) stay consistent.
///
/// <para/><b>NOTE:</b> Only new service providers are added, existing ones are
/// never removed or replaced.
///
/// <para/><em>this method is expensive and should only be called for discovery
/// of new service providers on the given classpath/classloader!</em>
/// </summary>
public void Reload()
{
UninterruptableMonitor.Enter(this);
try
{
IDictionary <string, Type> services = new JCG.LinkedDictionary <string, Type>(this.services);
SPIClassIterator <S> loader = SPIClassIterator <S> .Get();
foreach (var service in loader)
{
string clazzName = service.Name;
string name = null;
foreach (string suffix in suffixes)
{
if (clazzName.EndsWith(suffix, StringComparison.Ordinal))
{
name = clazzName.Substring(0, clazzName.Length - suffix.Length).ToLowerInvariant();
break;
}
}
if (name is null)
{
throw ServiceConfigurationError.Create("The class name " + service.Name +
" has wrong suffix, allowed are: " + Arrays.ToString(suffixes));
}
// only add the first one for each name, later services will be ignored
// this allows to place services before others in classpath to make
// them used instead of others
//
// TODO: Should we disallow duplicate names here?
// Allowing it may get confusing on collisions, as different packages
// could contain same factory class, which is a naming bug!
// When changing this be careful to allow reload()!
if (!services.ContainsKey(name))
{
services.Add(name, service);
}
}
this.services = services.AsReadOnly();
}
finally
{
UninterruptableMonitor.Exit(this);
}
}
/// <summary>
/// Detect repetition groups. Done once - for first doc. </summary>
private IList <IList <PhrasePositions> > GatherRptGroups(JCG.LinkedDictionary <Term, int?> rptTerms)
{
PhrasePositions[] rpp = RepeatingPPs(rptTerms);
IList <IList <PhrasePositions> > res = new JCG.List <IList <PhrasePositions> >();
if (!hasMultiTermRpts)
{
// simpler - no multi-terms - can base on positions in first doc
for (int i = 0; i < rpp.Length; i++)
{
PhrasePositions pp = rpp[i];
if (pp.rptGroup >= 0) // already marked as a repetition
{
continue;
}
int tpPos = TpPos(pp);
for (int j = i + 1; j < rpp.Length; j++)
{
PhrasePositions pp2 = rpp[j];
if (pp2.rptGroup >= 0 || pp2.offset == pp.offset || TpPos(pp2) != tpPos) // not a repetition - not a repetition: two PPs are originally in same offset in the query! - already marked as a repetition
{
continue;
}
// a repetition
int g = pp.rptGroup;
if (g < 0)
{
g = res.Count;
pp.rptGroup = g;
IList <PhrasePositions> rl = new JCG.List <PhrasePositions>(2)
{
pp
};
res.Add(rl);
}
pp2.rptGroup = g;
res[g].Add(pp2);
}
}
}
else
{
// more involved - has multi-terms
IList <JCG.HashSet <PhrasePositions> > tmp = new JCG.List <JCG.HashSet <PhrasePositions> >();
IList <FixedBitSet> bb = PpTermsBitSets(rpp, rptTerms);
UnionTermGroups(bb);
IDictionary <Term, int> tg = TermGroups(rptTerms, bb);
JCG.HashSet <int> distinctGroupIDs = new JCG.HashSet <int>(tg.Values);
for (int i = 0; i < distinctGroupIDs.Count; i++)
{
tmp.Add(new JCG.HashSet <PhrasePositions>());
}
foreach (PhrasePositions pp in rpp)
{
foreach (Term t in pp.terms)
{
if (rptTerms.ContainsKey(t))
{
int g = tg[t];
tmp[g].Add(pp);
if (Debugging.AssertsEnabled)
{
Debugging.Assert(pp.rptGroup == -1 || pp.rptGroup == g);
}
pp.rptGroup = g;
}
}
}
foreach (JCG.HashSet <PhrasePositions> hs in tmp)
{
res.Add(new JCG.List <PhrasePositions>(hs));
}
}
return(res);
}