public class RangeQueryOptimizer extends Searcher
Modifier and Type | Class and Description |
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private static class |
RangeQueryOptimizer.EmptyRange |
private static class |
RangeQueryOptimizer.FieldRange
Represents the ranges searched in a single field
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private static class |
RangeQueryOptimizer.Range
An immutable numerical range
|
Constructor and Description |
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RangeQueryOptimizer() |
Modifier and Type | Method and Description |
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private Optional<RangeQueryOptimizer.FieldRange> |
findCompatibleRange(IntItem item,
List<RangeQueryOptimizer.FieldRange> fieldRanges) |
private boolean |
optimizeAnd(AndItem and,
IndexFacts.Session indexFacts) |
private boolean |
recursiveOptimize(Item item,
IndexFacts.Session indexFacts)
Recursively performs the range optimization on this query tree and returns whether at least one optimization was done
|
Result |
search(Query query,
Execution execution)
Override this to implement your searcher.
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ensureFilled, fill, getLogger, process, toString
getAnnotatedDependencies, getDefaultAnnotatedDependencies, getDependencies, initDependencies
public Result search(Query query, Execution execution)
Searcher
Searcher implementation subclasses will, depending on their type of logic, do one of the following:
Hits come in two kinds - concrete hits are actual content of the kind requested by the user, meta hits are hits which provides information about the collection of hits, on the query, the service and so on.
The query specifies a window into a larger result list that must be returned from the searcher through hits and offset; Searchers which returns list of hits in the top level in the result must return at least hits number of hits (or if impossible; all that are available), starting at the given offset. In addition, searchers are allowed to return any number of meta hits (although this number is expected to be low). For hits contained in nested hit groups, the concept of a window defined by hits and offset is not well defined and does not apply.
Error handling in searchers:
private boolean recursiveOptimize(Item item, IndexFacts.Session indexFacts)
private boolean optimizeAnd(AndItem and, IndexFacts.Session indexFacts)
private Optional<RangeQueryOptimizer.FieldRange> findCompatibleRange(IntItem item, List<RangeQueryOptimizer.FieldRange> fieldRanges)
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