public final class SlowCompositeReaderWrapper
extends org.apache.lucene.index.LeafReader
MultiReader
or DirectoryReader
) to emulate a
LeafReader
. This requires implementing the postings
APIs on-the-fly, using the static methods in MultiTerms
, MultiDocValues
, by stepping through
the sub-readers to merge fields/terms, appending docs, etc.
NOTE: this class almost always results in a
performance hit. If this is important to your use case,
you'll get better performance by gathering the sub readers using
IndexReader.getContext()
to get the
leaves and then operate per-LeafReader,
instead of using this class.
Modifier and Type | Method and Description |
---|---|
void |
checkIntegrity() |
protected void |
doClose() |
void |
document(int docID,
org.apache.lucene.index.StoredFieldVisitor visitor) |
org.apache.lucene.index.BinaryDocValues |
getBinaryDocValues(String field) |
org.apache.lucene.index.IndexReader.CacheHelper |
getCoreCacheHelper() |
org.apache.lucene.index.FieldInfos |
getFieldInfos() |
org.apache.lucene.util.Bits |
getLiveDocs() |
org.apache.lucene.index.LeafMetaData |
getMetaData() |
org.apache.lucene.index.NumericDocValues |
getNormValues(String field) |
org.apache.lucene.index.NumericDocValues |
getNumericDocValues(String field) |
org.apache.lucene.index.PointValues |
getPointValues(String field) |
org.apache.lucene.index.IndexReader.CacheHelper |
getReaderCacheHelper() |
org.apache.lucene.index.SortedDocValues |
getSortedDocValues(String field) |
org.apache.lucene.index.SortedNumericDocValues |
getSortedNumericDocValues(String field) |
org.apache.lucene.index.SortedSetDocValues |
getSortedSetDocValues(String field) |
org.apache.lucene.index.Fields |
getTermVectors(int docID) |
int |
maxDoc() |
int |
numDocs() |
org.apache.lucene.index.Terms |
terms(String field) |
String |
toString() |
static org.apache.lucene.index.LeafReader |
wrap(org.apache.lucene.index.IndexReader reader)
This method is sugar for getting an
LeafReader from
an IndexReader of any kind. |
docFreq, getContext, getDocCount, getSumDocFreq, getSumTotalTermFreq, postings, postings, totalTermFreq
public static org.apache.lucene.index.LeafReader wrap(org.apache.lucene.index.IndexReader reader) throws IOException
LeafReader
from
an IndexReader
of any kind. If the reader is already atomic,
it is returned unchanged, otherwise wrapped by this class.IOException
public org.apache.lucene.index.IndexReader.CacheHelper getReaderCacheHelper()
getReaderCacheHelper
in class org.apache.lucene.index.IndexReader
public org.apache.lucene.index.IndexReader.CacheHelper getCoreCacheHelper()
getCoreCacheHelper
in class org.apache.lucene.index.LeafReader
public org.apache.lucene.index.Terms terms(String field) throws IOException
terms
in class org.apache.lucene.index.LeafReader
IOException
public org.apache.lucene.index.NumericDocValues getNumericDocValues(String field) throws IOException
getNumericDocValues
in class org.apache.lucene.index.LeafReader
IOException
public org.apache.lucene.index.BinaryDocValues getBinaryDocValues(String field) throws IOException
getBinaryDocValues
in class org.apache.lucene.index.LeafReader
IOException
public org.apache.lucene.index.SortedNumericDocValues getSortedNumericDocValues(String field) throws IOException
getSortedNumericDocValues
in class org.apache.lucene.index.LeafReader
IOException
public org.apache.lucene.index.SortedDocValues getSortedDocValues(String field) throws IOException
getSortedDocValues
in class org.apache.lucene.index.LeafReader
IOException
public org.apache.lucene.index.SortedSetDocValues getSortedSetDocValues(String field) throws IOException
getSortedSetDocValues
in class org.apache.lucene.index.LeafReader
IOException
public org.apache.lucene.index.NumericDocValues getNormValues(String field) throws IOException
getNormValues
in class org.apache.lucene.index.LeafReader
IOException
public org.apache.lucene.index.Fields getTermVectors(int docID) throws IOException
getTermVectors
in class org.apache.lucene.index.IndexReader
IOException
public int numDocs()
numDocs
in class org.apache.lucene.index.IndexReader
public int maxDoc()
maxDoc
in class org.apache.lucene.index.IndexReader
public void document(int docID, org.apache.lucene.index.StoredFieldVisitor visitor) throws IOException
document
in class org.apache.lucene.index.IndexReader
IOException
public org.apache.lucene.util.Bits getLiveDocs()
getLiveDocs
in class org.apache.lucene.index.LeafReader
public org.apache.lucene.index.PointValues getPointValues(String field)
getPointValues
in class org.apache.lucene.index.LeafReader
public org.apache.lucene.index.FieldInfos getFieldInfos()
getFieldInfos
in class org.apache.lucene.index.LeafReader
protected void doClose() throws IOException
doClose
in class org.apache.lucene.index.IndexReader
IOException
public void checkIntegrity() throws IOException
checkIntegrity
in class org.apache.lucene.index.LeafReader
IOException
public org.apache.lucene.index.LeafMetaData getMetaData()
getMetaData
in class org.apache.lucene.index.LeafReader
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