#include <coherence/util/extractor/IndexAwareExtractor.hpp>
Inherits ValueExtractor.
Inherited by ConditionalExtractor [virtual]
.
Instances of this interface are intended to be used with the QueryMap's addIndex and removeIndex API to support the creation of custom indexes.
Public Types | |
typedef spec::Handle | Handle |
IndexAwareExtractor Handle definition. | |
typedef spec::View | View |
IndexAwareExtractor View definition. | |
typedef spec::Holder | Holder |
IndexAwareExtractor Holder definition. | |
Public Member Functions | |
virtual MapIndex::Handle | createIndex (bool fOrdered, Comparator::View vComparator, Map::Handle hMapIndex) const =0 |
Create an index and associate it with the corresponding extractor. | |
virtual MapIndex::Handle | destroyIndex (Map::Handle hMapIndex) const =0 |
Destroy an existing index and remove it from the given map of indexes. |
virtual MapIndex::Handle createIndex | ( | bool | fOrdered, | |
Comparator::View | vComparator, | |||
Map::Handle | hMapIndex | |||
) | const [pure virtual] |
Create an index and associate it with the corresponding extractor.
Important: it is a responsibility of this method's implementations to place the necessary <ValueExtractor, MapIndex> entry into the given map of indexes.
fOrdered | true iff the contents of the indexed information should be ordered; false otherwise | |
vComparator | the Comparator object which imposes an ordering of entries in the index contents; or NULL if the entries' values natural ordering should be used | |
hMapIndex | a Map of ValueExtractor to MapIndex to be updated with the created index |
Implemented in ConditionalExtractor.
virtual MapIndex::Handle destroyIndex | ( | Map::Handle | hMapIndex | ) | const [pure virtual] |
Destroy an existing index and remove it from the given map of indexes.
hMapIndex | a Map of ValueExtractor to MapIndex to be updated by removing the index being destroyed |
Implemented in ConditionalExtractor.