Class PassageSelector
- java.lang.Object
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- org.apache.lucene.search.matchhighlight.PassageSelector
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public class PassageSelector extends java.lang.Object
Selects fragments of text that score best for the given set of highlight markers.
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Field Summary
Fields Modifier and Type Field Description static java.util.Comparator<Passage>
DEFAULT_SCORER
private PassageAdjuster
passageAdjuster
private java.util.Comparator<Passage>
passageScorer
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Constructor Summary
Constructors Constructor Description PassageSelector()
PassageSelector(java.util.Comparator<Passage> passageScorer, PassageAdjuster passageAdjuster)
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description private static boolean
adjecentOrOverlapping(Passage a, Passage b)
java.util.List<Passage>
pickBest(java.lang.CharSequence value, java.util.List<? extends OffsetRange> markers, int maxPassageWindow, int maxPassages)
java.util.List<Passage>
pickBest(java.lang.CharSequence value, java.util.List<? extends OffsetRange> markers, int maxPassageWindow, int maxPassages, java.util.List<OffsetRange> permittedPassageRanges)
protected Passage[]
pickDefaultPassage(java.lang.CharSequence value, int maxCharacterWindow, int maxPassages, java.util.List<OffsetRange> permittedPassageRanges)
Invoked when no passages could be selected (due to constraints or lack of highlight markers).(package private) static boolean
sortedAndNonOverlapping(java.util.List<? extends OffsetRange> permittedPassageRanges)
private java.util.List<? extends OffsetRange>
splitOrTruncateToWindows(java.util.List<? extends OffsetRange> markers, int maxPassageWindow, java.util.List<OffsetRange> permittedPassageRanges)
Truncate or split highlight markers that cross permitted value boundaries.
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Field Detail
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DEFAULT_SCORER
public static final java.util.Comparator<Passage> DEFAULT_SCORER
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passageScorer
private final java.util.Comparator<Passage> passageScorer
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passageAdjuster
private final PassageAdjuster passageAdjuster
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Constructor Detail
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PassageSelector
public PassageSelector()
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PassageSelector
public PassageSelector(java.util.Comparator<Passage> passageScorer, PassageAdjuster passageAdjuster)
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Method Detail
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pickBest
public java.util.List<Passage> pickBest(java.lang.CharSequence value, java.util.List<? extends OffsetRange> markers, int maxPassageWindow, int maxPassages)
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pickBest
public java.util.List<Passage> pickBest(java.lang.CharSequence value, java.util.List<? extends OffsetRange> markers, int maxPassageWindow, int maxPassages, java.util.List<OffsetRange> permittedPassageRanges)
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splitOrTruncateToWindows
private java.util.List<? extends OffsetRange> splitOrTruncateToWindows(java.util.List<? extends OffsetRange> markers, int maxPassageWindow, java.util.List<OffsetRange> permittedPassageRanges)
Truncate or split highlight markers that cross permitted value boundaries.
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sortedAndNonOverlapping
static boolean sortedAndNonOverlapping(java.util.List<? extends OffsetRange> permittedPassageRanges)
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pickDefaultPassage
protected Passage[] pickDefaultPassage(java.lang.CharSequence value, int maxCharacterWindow, int maxPassages, java.util.List<OffsetRange> permittedPassageRanges)
Invoked when no passages could be selected (due to constraints or lack of highlight markers).
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