public class IndexCombinatorSearcher extends Searcher
Modifier and Type | Class and Description |
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private static class |
IndexCombinatorSearcher.ArrayComparator |
private static class |
IndexCombinatorSearcher.RewriteStrategies |
Modifier and Type | Field and Description |
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private IndexCombinatorSearcher.ArrayComparator |
comparator |
static String |
MIXED_RECALL_REWRITE |
Constructor and Description |
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IndexCombinatorSearcher() |
ensureFilled, fill, getLogger, process, toString
getAnnotatedDependencies, getDefaultAnnotatedDependencies, getDependencies, initDependencies
public static final String MIXED_RECALL_REWRITE
private final IndexCombinatorSearcher.ArrayComparator comparator
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 IndexCombinatorSearcher.RewriteStrategies chooseRewriteStrategy(CompositeItem c, IndexFacts.Session session)
private CompositeItem rewriteNot(NotItem not, IndexFacts.Session session)
private Item rewrite(CompositeItem c, IndexFacts.Session session)
private CompositeItem traverse(CompositeItem c, IndexFacts.Session session)
private CompositeItem expensiveTransform(AndItem c, IndexFacts.Session session)
private Index.Attribute[] getIndices(HasIndexItem block, IndexFacts.Session session)
private OrItem linearAnd(AndItem c, Index.Attribute[] names, int brancherIndex)
private OrItem quadraticAnd(AndItem c, Index.Attribute[] firstNames, Index.Attribute[] secondNames, int firstBrancher, int secondBrancher)
private CompositeItem flatTransform(CompositeItem c, IndexFacts.Session session)
private CompositeItem cheapTransform(CompositeItem c, IndexFacts.Session session)
private OrItem searchAllForItem(Item word, Index.Attribute[] attributes)
private Item retarget(Item word, Index.Attribute newIndex)
private Item convertSinglePhraseOrBlock(Item item, IndexFacts.Session session)
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