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java.lang.Objectorg.apache.lucene.index.IndexReader
org.apache.lucene.index.FilterIndexReader
org.apache.lucene.index.PruningReader
public class PruningReader
This class produces a subset of the input index, by removing some postings
data according to rules implemented in a TermPruningPolicy
, and
optionally it can also remove stored fields of documents according to rules
implemented in a StorePruningPolicy
.
Nested Class Summary |
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Nested classes/interfaces inherited from class org.apache.lucene.index.FilterIndexReader |
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org.apache.lucene.index.FilterIndexReader.FilterTermDocs, org.apache.lucene.index.FilterIndexReader.FilterTermEnum, org.apache.lucene.index.FilterIndexReader.FilterTermPositions |
Nested classes/interfaces inherited from class org.apache.lucene.index.IndexReader |
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org.apache.lucene.index.IndexReader.ReaderClosedListener |
Field Summary | |
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protected int |
delTermCount
|
protected int |
delVecCount
|
protected int |
docCount
|
protected int |
prunedVecCount
|
protected StorePruningPolicy |
storePolicy
|
protected int |
termCount
|
protected TermPruningPolicy |
termPolicy
|
protected int |
vecCount
|
Fields inherited from class org.apache.lucene.index.FilterIndexReader |
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in |
Fields inherited from class org.apache.lucene.index.IndexReader |
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hasChanges |
Constructor Summary | |
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PruningReader(org.apache.lucene.index.IndexReader in,
StorePruningPolicy storePolicy,
TermPruningPolicy termPolicy)
Constructor. |
Method Summary | |
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org.apache.lucene.document.Document |
document(int n,
org.apache.lucene.document.FieldSelector fieldSelector)
Applies a StorePruningPolicy to stored fields of a document. |
org.apache.lucene.index.FieldInfos |
getFieldInfos()
Applies a StorePruningPolicy to the list of available field infos. |
org.apache.lucene.index.IndexReader[] |
getSequentialSubReaders()
|
org.apache.lucene.index.TermFreqVector[] |
getTermFreqVectors(int docNumber)
Applies TermPruningPolicy to terms inside term vectors. |
org.apache.lucene.index.TermPositions |
termPositions()
Applies TermPruningPolicy to term positions. |
org.apache.lucene.index.TermEnum |
terms()
Applies TermPruningPolicy to term enum. |
Methods inherited from class org.apache.lucene.index.FilterIndexReader |
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directory, docFreq, doClose, doCommit, doDelete, doSetNorm, doUndeleteAll, getCommitUserData, getCoreCacheKey, getDeletesCacheKey, getIndexCommit, getTermFreqVector, getTermFreqVector, getTermFreqVector, getTermInfosIndexDivisor, getUniqueTermCount, getVersion, hasDeletions, hasNorms, isCurrent, isDeleted, isOptimized, maxDoc, norms, norms, numDocs, termDocs, termDocs, terms, toString |
Methods inherited from class org.apache.lucene.index.IndexReader |
---|
acquireWriteLock, addReaderClosedListener, clone, clone, close, commit, commit, decRef, deleteDocument, deleteDocuments, document, doOpenIfChanged, doOpenIfChanged, doOpenIfChanged, doOpenIfChanged, ensureOpen, flush, flush, getCommitUserData, getCurrentVersion, getRefCount, incRef, indexExists, lastModified, listCommits, numDeletedDocs, open, open, open, open, open, open, open, open, open, open, open, openIfChanged, openIfChanged, openIfChanged, openIfChanged, removeReaderClosedListener, reopen, reopen, reopen, reopen, setNorm, setNorm, termPositions, tryIncRef, undeleteAll |
Methods inherited from class java.lang.Object |
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equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
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protected int docCount
protected int vecCount
protected int termCount
protected int delTermCount
protected int prunedVecCount
protected int delVecCount
protected TermPruningPolicy termPolicy
protected StorePruningPolicy storePolicy
Constructor Detail |
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public PruningReader(org.apache.lucene.index.IndexReader in, StorePruningPolicy storePolicy, TermPruningPolicy termPolicy)
in
- input readerstorePolicy
- implementation of StorePruningPolicy
- if null
then stored values will be retained as is.termPolicy
- implementation of TermPruningPolicy
, must not
be null.Method Detail |
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public org.apache.lucene.index.IndexReader[] getSequentialSubReaders()
getSequentialSubReaders
in class org.apache.lucene.index.FilterIndexReader
public org.apache.lucene.document.Document document(int n, org.apache.lucene.document.FieldSelector fieldSelector) throws org.apache.lucene.index.CorruptIndexException, IOException
StorePruningPolicy
to stored fields of a document.
document
in class org.apache.lucene.index.FilterIndexReader
org.apache.lucene.index.CorruptIndexException
IOException
public org.apache.lucene.index.FieldInfos getFieldInfos()
StorePruningPolicy
to the list of available field infos.
getFieldInfos
in class org.apache.lucene.index.FilterIndexReader
public org.apache.lucene.index.TermFreqVector[] getTermFreqVectors(int docNumber) throws IOException
TermPruningPolicy
to terms inside term vectors.
getTermFreqVectors
in class org.apache.lucene.index.FilterIndexReader
IOException
public org.apache.lucene.index.TermPositions termPositions() throws IOException
TermPruningPolicy
to term positions.
termPositions
in class org.apache.lucene.index.FilterIndexReader
IOException
public org.apache.lucene.index.TermEnum terms() throws IOException
TermPruningPolicy
to term enum.
terms
in class org.apache.lucene.index.FilterIndexReader
IOException
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