public interface ExtractionNamespaceFunctionFactory<T extends ExtractionNamespace>
Modifier and Type | Method and Description |
---|---|
com.google.common.base.Function<String,String> |
buildFn(T extractionNamespace,
Map<String,String> cache)
Create a function for the given namespace which will do the manipulation requested in the extractionNamespace.
|
com.google.common.base.Function<String,List<String>> |
buildReverseFn(T extractionNamespace,
Map<String,String> cache) |
Callable<String> |
getCachePopulator(T extractionNamespace,
String lastVersion,
Map<String,String> swap)
This function is called once if `ExtractionNamespace.getUpdateMs() == 0`, or every update if
`ExtractionNamespace.getUpdateMs() > 0`
For ExtractionNamespace which have the NamespaceExtractionCacheManager handle regular updates, this function
is used to populate the namespace cache each time.
|
com.google.common.base.Function<String,String> buildFn(T extractionNamespace, Map<String,String> cache)
extractionNamespace
- The ExtractionNamespace for which a manipulating function is needed.com.google.common.base.Function<String,List<String>> buildReverseFn(T extractionNamespace, Map<String,String> cache)
extractionNamespace
- The ExtractionNamespace for which a manipulating reverse function is needed.cache
- view of the cache containing the function mapping.Callable<String> getCachePopulator(T extractionNamespace, String lastVersion, Map<String,String> swap)
extractionNamespace
- The ExtractionNamespace for which to populate data.lastVersion
- The version which was last cachedswap
- The temporary Map into which data may be placed and will be "swapped" with the proper
namespace Map in NamespaceExtractionCacheManager. Implementations which cannot offer
a swappable cache of the data may ignore this but must make sure `buildFn(...)` returns
a proper Function.Copyright © 2011–2016. All rights reserved.