/// <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>
/// 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()
{
lock (this)
{
IDictionary <string, Type> services = new LinkedHashMap <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 == null)
{
throw new InvalidOperationException("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
//
// LUCENETODO: 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 = Collections.UnmodifiableMap(services);
}
}