core
| java.lang.Object | ||
| ↳ | org.apache.lucene.search.Filter | |
| ↳ | org.apache.lucene.search.QueryWrapperFilter | |
Constrains search results to only match those which also match a provided query.
This could be used, for example, with a TermRangeQuery on a suitably
formatted date field to implement date filtering. One could re-use a single
QueryFilter that matches, e.g., only documents modified within the last
week. The QueryFilter and TermRangeQuery would only need to be reconstructed
once per day.
| Public Constructors | |||||||||||
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Constructs a filter which only matches documents matching
query. | |||||||||||
| Public Methods | |||||||||||
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Creates a
DocIdSet enumerating the documents that should be
permitted in search results. | |||||||||||
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[Expand]
Inherited Methods | |||||||||||
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From class
org.apache.lucene.search.Filter
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From class
java.lang.Object
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Constructs a filter which only matches documents matching
query.
Creates a DocIdSet enumerating the documents that should be
permitted in search results. NOTE: null can be
returned if no documents are accepted by this Filter.
Note: This method will be called once per segment in
the index during searching. The returned DocIdSet
must refer to document IDs for that segment, not for
the top-level reader.
| reader | a IndexReader instance opened on the index currently
searched on. Note, it is likely that the provided reader does not
represent the whole underlying index i.e. if the index has more than
one segment the given reader only represents a single segment. |
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| IOException |
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