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java.lang.Object org.apache.lucene.search.FieldComparator<String> org.apache.lucene.search.FieldComparator.StringComparatorLocale
public static final class FieldComparator.StringComparatorLocale
Sorts by a field's value using the Collator for a given Locale.
Nested Class Summary |
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Field Summary |
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Fields inherited from class org.apache.lucene.search.FieldComparator |
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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 |
compareValues(String val1,
String val2)
Returns -1 if first is less than second. |
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. |
void |
setNextReader(IndexReader reader,
int docBase)
Set a new Reader. |
String |
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, setMissingValue, 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<String>
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<String>
doc
- that was hit
public void copy(int slot, int doc)
FieldComparator
copy
in class FieldComparator<String>
slot
- which slot to copy the hit todoc
- docID relative to current readerpublic void setNextReader(IndexReader reader, int docBase) throws IOException
FieldComparator
setNextReader
in class FieldComparator<String>
reader
- current readerdocBase
- docBase of this reader
IOException
public 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<String>
bottom
- the currently weakest (sorted last) slot in the queuepublic String value(int slot)
FieldComparator
value
in class FieldComparator<String>
slot
- the value
public int compareValues(String val1, String val2)
FieldComparator
compareValues
in class FieldComparator<String>
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