public class BlockTermsReader extends FieldsProducer
PostingsReaderBase
. This class is reusable for
codecs that use a different format for
docs/freqs/positions (though codecs are also free to
make their own terms dict impl).
This class also interacts with an instance of TermsIndexReaderBase
, to abstract away the specific
implementation of the terms dict index.
EMPTY_ARRAY
Constructor and Description |
---|
BlockTermsReader(TermsIndexReaderBase indexReader,
Directory dir,
FieldInfos fieldInfos,
SegmentInfo info,
PostingsReaderBase postingsReader,
IOContext context,
String segmentSuffix) |
Modifier and Type | Method and Description |
---|---|
void |
checkIntegrity()
Checks consistency of this reader.
|
void |
close() |
Iterator<String> |
iterator()
Returns an iterator that will step through all fields
names.
|
long |
ramBytesUsed()
Returns approximate RAM bytes used
|
int |
size()
Returns the number of fields or -1 if the number of
distinct field names is unknown.
|
Terms |
terms(String field)
Get the
Terms for this field. |
getUniqueTermCount
public BlockTermsReader(TermsIndexReaderBase indexReader, Directory dir, FieldInfos fieldInfos, SegmentInfo info, PostingsReaderBase postingsReader, IOContext context, String segmentSuffix) throws IOException
IOException
public void close() throws IOException
close
in interface Closeable
close
in interface AutoCloseable
close
in class FieldsProducer
IOException
public Iterator<String> iterator()
Fields
public Terms terms(String field) throws IOException
Fields
Terms
for this field. This will return
null if the field does not exist.terms
in class Fields
IOException
public int size()
Fields
Fields.iterator()
will return as many field names.public long ramBytesUsed()
FieldsProducer
ramBytesUsed
in class FieldsProducer
public void checkIntegrity() throws IOException
FieldsProducer
Note that this may be costly in terms of I/O, e.g. may involve computing a checksum value against large data files.
checkIntegrity
in class FieldsProducer
IOException
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