public class CachingSpanFilter extends SpanFilter
Constructor and Description |
---|
CachingSpanFilter(SpanFilter filter)
New deletions always result in a cache miss, by default
(
CachingWrapperFilter.DeletesMode.RECACHE . |
CachingSpanFilter(SpanFilter filter,
CachingWrapperFilter.DeletesMode deletesMode) |
Modifier and Type | Method and Description |
---|---|
SpanFilterResult |
bitSpans(IndexReader reader)
Returns a SpanFilterResult with true for documents which should be permitted in
search results, and false for those that should not and Spans for where the true docs match.
|
boolean |
equals(java.lang.Object o) |
DocIdSet |
getDocIdSet(IndexReader reader)
Creates a
DocIdSet enumerating the documents that should be
permitted in search results. |
int |
hashCode() |
java.lang.String |
toString() |
public CachingSpanFilter(SpanFilter filter)
CachingWrapperFilter.DeletesMode.RECACHE
.filter
- Filter to cache results ofpublic CachingSpanFilter(SpanFilter filter, CachingWrapperFilter.DeletesMode deletesMode)
filter
- Filter to cache results ofdeletesMode
- See CachingWrapperFilter.DeletesMode
public DocIdSet getDocIdSet(IndexReader reader) throws java.io.IOException
Filter
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.
getDocIdSet
in class Filter
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.java.io.IOException
DocIdBitSet
public SpanFilterResult bitSpans(IndexReader reader) throws java.io.IOException
SpanFilter
bitSpans
in class SpanFilter
reader
- The IndexReader
to load position and DocIdSet information fromSpanFilterResult
java.io.IOException
- if there was an issue accessing the necessary informationpublic java.lang.String toString()
toString
in class java.lang.Object
public boolean equals(java.lang.Object o)
equals
in class java.lang.Object
public int hashCode()
hashCode
in class java.lang.Object
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