org.apache.lucene.codecs
Class DocValuesProducer

java.lang.Object
  org.apache.lucene.codecs.DocValuesProducer

All Implemented Interfaces:

Closeable

Direct Known Subclasses:

Lucene45DocValuesProducer

public abstract class DocValuesProducer
extends Object
implements Closeable

Abstract API that produces numeric, binary and sorted docvalues.

WARNING: This API is experimental and might change in incompatible ways in the next release.

Nested Class Summary

static class	DocValuesProducer.SortedDocsWithField A simple implementation of getDocsWithField(org.apache.lucene.index.FieldInfo) that returns true if a document has an ordinal >= 0
static class	DocValuesProducer.SortedSetDocsWithField A simple implementation of getDocsWithField(org.apache.lucene.index.FieldInfo) that returns true if a document has any ordinals.

Constructor Summary

protected

DocValuesProducer() Sole constructor.

Method Summary

abstract BinaryDocValues	getBinary(FieldInfo field) Returns BinaryDocValues for this field.
abstract Bits	getDocsWithField(FieldInfo field) Returns a Bits at the size of reader.maxDoc(), with turned on bits for each docid that does have a value for this field.
abstract NumericDocValues	getNumeric(FieldInfo field) Returns NumericDocValues for this field.
abstract SortedDocValues	getSorted(FieldInfo field) Returns SortedDocValues for this field.
abstract SortedSetDocValues	getSortedSet(FieldInfo field) Returns SortedSetDocValues for this field.
abstract long	ramBytesUsed() Returns approximate RAM bytes used

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.io.Closeable

close

Constructor Detail

DocValuesProducer

protected DocValuesProducer()

Sole constructor. (For invocation by subclass constructors, typically implicit.)

Method Detail

getNumeric

public abstract NumericDocValues getNumeric(FieldInfo field)
                                     throws IOException

Returns NumericDocValues for this field. The returned instance need not be thread-safe: it will only be used by a single thread.

Throws:

IOException

getBinary

public abstract BinaryDocValues getBinary(FieldInfo field)
                                   throws IOException

Returns BinaryDocValues for this field. The returned instance need not be thread-safe: it will only be used by a single thread.

Throws:

IOException

getSorted

public abstract SortedDocValues getSorted(FieldInfo field)
                                   throws IOException

Returns SortedDocValues for this field. The returned instance need not be thread-safe: it will only be used by a single thread.

Throws:

IOException

getSortedSet

public abstract SortedSetDocValues getSortedSet(FieldInfo field)
                                         throws IOException

Returns SortedSetDocValues for this field. The returned instance need not be thread-safe: it will only be used by a single thread.

Throws:

IOException

getDocsWithField

public abstract Bits getDocsWithField(FieldInfo field)
                               throws IOException

Returns a Bits at the size of reader.maxDoc(), with turned on bits for each docid that does have a value for this field. The returned instance need not be thread-safe: it will only be used by a single thread.

Throws:

IOException

ramBytesUsed

public abstract long ramBytesUsed()

Returns approximate RAM bytes used