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java.lang.Objectorg.apache.lucene.search.DocIdSetIterator
org.apache.lucene.index.DocsEnum
org.apache.lucene.index.MultiDocsEnum
public final class MultiDocsEnum
Exposes flex API, merged from flex API of sub-segments.
Nested Class Summary | |
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static class |
MultiDocsEnum.EnumWithSlice
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Field Summary |
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Fields inherited from class org.apache.lucene.index.DocsEnum |
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FLAG_FREQS |
Fields inherited from class org.apache.lucene.search.DocIdSetIterator |
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NO_MORE_DOCS |
Constructor Summary | |
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MultiDocsEnum(MultiTermsEnum parent,
int subReaderCount)
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Method Summary | |
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int |
advance(int target)
Advances to the first beyond (see NOTE below) the current whose document number is greater than or equal to target. |
boolean |
canReuse(MultiTermsEnum parent)
|
int |
docID()
Returns the following: -1 or DocIdSetIterator.NO_MORE_DOCS if DocIdSetIterator.nextDoc() or
DocIdSetIterator.advance(int) were not called yet. |
int |
freq()
Returns term frequency in the current document. |
int |
getNumSubs()
|
MultiDocsEnum.EnumWithSlice[] |
getSubs()
|
int |
nextDoc()
Advances to the next document in the set and returns the doc it is currently on, or DocIdSetIterator.NO_MORE_DOCS if there are no more docs in the
set.NOTE: after the iterator has exhausted you should not call this method, as it may result in unpredicted behavior. |
String |
toString()
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Methods inherited from class org.apache.lucene.index.DocsEnum |
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attributes |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public MultiDocsEnum(MultiTermsEnum parent, int subReaderCount)
Method Detail |
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public boolean canReuse(MultiTermsEnum parent)
public int getNumSubs()
public MultiDocsEnum.EnumWithSlice[] getSubs()
public int freq() throws IOException
DocsEnum
DocIdSetIterator.nextDoc()
is first called,
nor after DocIdSetIterator.nextDoc()
returns NO_MORE_DOCS.
freq
in class DocsEnum
IOException
public int docID()
DocIdSetIterator
DocIdSetIterator.NO_MORE_DOCS
if DocIdSetIterator.nextDoc()
or
DocIdSetIterator.advance(int)
were not called yet.
DocIdSetIterator.NO_MORE_DOCS
if the iterator has exhausted.
docID
in class DocIdSetIterator
public int advance(int target) throws IOException
DocIdSetIterator
DocIdSetIterator.NO_MORE_DOCS
if there are no more docs in the
set.
Behaves as if written:
int advance(int target) { int doc; while ((doc = nextDoc()) < target) { } return doc; }Some implementations are considerably more efficient than that.
NOTE: when target ≤ current
implementations may opt
not to advance beyond their current DocIdSetIterator.docID()
.
NOTE: this method may be called with DocIdSetIterator.NO_MORE_DOCS
for
efficiency by some Scorers. If your implementation cannot efficiently
determine that it should exhaust, it is recommended that you check for that
value in each call to this method.
NOTE: after the iterator has exhausted you should not call this method, as it may result in unpredicted behavior.
advance
in class DocIdSetIterator
IOException
public int nextDoc() throws IOException
DocIdSetIterator
DocIdSetIterator.NO_MORE_DOCS
if there are no more docs in the
set.
nextDoc
in class DocIdSetIterator
IOException
public String toString()
toString
in class Object
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