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public interface Command<T>
Defines a grouping command.
This is an abstraction on how the Collector instances are created
and how the results are retrieved from the Collector instances.
| Method Summary | |
|---|---|
List<Collector> |
create()
Returns a list of Collector instances to be
included in the search based on the . |
Sort |
getGroupSort()
|
String |
getKey()
|
Sort |
getSortWithinGroup()
|
T |
result()
Returns the results that the collectors created by create() contain after a search has been executed. |
| Method Detail |
|---|
List<Collector> create()
throws IOException
Collector instances to be
included in the search based on the .
Collector instances
IOException - If I/O related errors occurT result()
create() contain after a search has been executed.
String getKey()
Sort getGroupSort()
Sort getSortWithinGroup()
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