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java.lang.Object org.apache.lucene.search.FieldComparator<T> org.apache.lucene.search.FieldComparator.NumericComparator<Short> org.apache.lucene.search.FieldComparator.ShortComparator
public static final class FieldComparator.ShortComparator
Parses field's values as short (using FieldCache.getShorts(org.apache.lucene.index.AtomicReader, java.lang.String, boolean)
and sorts by ascending value
Nested Class Summary |
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Field Summary |
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Fields inherited from class org.apache.lucene.search.FieldComparator.NumericComparator |
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docsWithField, field, missingValue |
Method Summary | |
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int |
compare(int slot1,
int slot2)
Compare hit at slot1 with hit at slot2. |
int |
compareBottom(int doc)
Compare the bottom of the queue with doc. |
int |
compareDocToValue(int doc,
Short valueObj)
Returns negative result if the doc's value is less than the provided value. |
void |
copy(int slot,
int doc)
This method is called when a new hit is competitive. |
void |
setBottom(int bottom)
Set the bottom slot, ie the "weakest" (sorted last) entry in the queue. |
FieldComparator<Short> |
setNextReader(AtomicReaderContext context)
Set a new AtomicReaderContext . |
Short |
value(int slot)
Return the actual value in the slot. |
Methods inherited from class org.apache.lucene.search.FieldComparator |
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binarySearch, binarySearch, compareValues, setScorer |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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public int compare(int slot1, int slot2)
FieldComparator
compare
in class FieldComparator<Short>
slot1
- first slot to compareslot2
- second slot to compare
public int compareBottom(int doc)
FieldComparator
FieldComparator.compare(int,int)
} as if bottom were slot1 and the new
document were slot 2.
For a search that hits many results, this method will be the hotspot (invoked by far the most frequently).
compareBottom
in class FieldComparator<Short>
doc
- that was hit
public void copy(int slot, int doc)
FieldComparator
copy
in class FieldComparator<Short>
slot
- which slot to copy the hit todoc
- docID relative to current readerpublic FieldComparator<Short> setNextReader(AtomicReaderContext context) throws IOException
FieldComparator
AtomicReaderContext
. All subsequent docIDs are relative to
the current reader (you must add docBase if you need to
map it to a top-level docID).
setNextReader
in class FieldComparator.NumericComparator<Short>
context
- current reader context
IOException
- if there is a low-level IO errorpublic void setBottom(int bottom)
FieldComparator
FieldComparator.compareBottom(int)
is
called, you should compare against this slot. This
will always be called before FieldComparator.compareBottom(int)
.
setBottom
in class FieldComparator<Short>
bottom
- the currently weakest (sorted last) slot in the queuepublic Short value(int slot)
FieldComparator
value
in class FieldComparator<Short>
slot
- the value
public int compareDocToValue(int doc, Short valueObj)
FieldComparator
compareDocToValue
in class FieldComparator<Short>
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