Package org.apache.lucene.util
Class NamedSPILoader<S extends NamedSPILoader.NamedSPI>
java.lang.Object
org.apache.lucene.util.NamedSPILoader<S>
- All Implemented Interfaces:
Iterable<S>
public final class NamedSPILoader<S extends NamedSPILoader.NamedSPI>
extends Object
implements Iterable<S>
Helper class for loading named SPIs from classpath (e.g. Codec, PostingsFormat).
- NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.
-
Nested Class Summary
-
Constructor Summary
ConstructorDescriptionNamedSPILoader
(Class<S> clazz) NamedSPILoader
(Class<S> clazz, ClassLoader classloader) -
Method Summary
Modifier and TypeMethodDescriptionstatic void
checkServiceName
(String name) Validates that a service name meets the requirements ofNamedSPILoader.NamedSPI
iterator()
void
reload
(ClassLoader classloader) Reloads the internal SPI list from the givenClassLoader
.Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface java.lang.Iterable
forEach, spliterator
-
Constructor Details
-
NamedSPILoader
-
NamedSPILoader
-
-
Method Details
-
reload
Reloads the internal SPI list from the givenClassLoader
. Changes to the service list are visible after the method ends, all iterators (iterator()
,...) stay consistent.NOTE: Only new service providers are added, existing ones are never removed or replaced.
This method is expensive and should only be called for discovery of new service providers on the given classpath/classloader!
-
checkServiceName
Validates that a service name meets the requirements ofNamedSPILoader.NamedSPI
-
lookup
-
availableServices
-
iterator
- Specified by:
iterator
in interfaceIterable<S extends NamedSPILoader.NamedSPI>
-