Module org.elasticsearch.server

Package org.elasticsearch.index.mapper

Class BlockSourceReader

java.lang.Object

org.elasticsearch.index.mapper.BlockSourceReader

All Implemented Interfaces:

BlockLoader.Reader, BlockLoader.RowStrideReader

public abstract class BlockSourceReader
extends Object
implements BlockLoader.RowStrideReader

Loads values from _source. This whole process is very slow and cast-tastic, so it doesn't really try to avoid megamorphic invocations. It's just going to be slow.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	BlockSourceReader.BooleansBlockLoader	Load booleans from _source.
static class	BlockSourceReader.BytesRefsBlockLoader	Load BytesRefs from _source.
static class	BlockSourceReader.DoublesBlockLoader	Load doubles from _source.
static class	BlockSourceReader.GeometriesBlockLoader
static class	BlockSourceReader.IntsBlockLoader	Load ints from _source.
static interface	BlockSourceReader.LeafIteratorLookup
static class	BlockSourceReader.LongsBlockLoader	Load longs from _source.

Method Summary

Modifier and Type	Method	Description
protected abstract void	append(BlockLoader.Builder builder, Object v)
final boolean	canReuse(int startingDocID)	Checks if the reader can be used to read a range documents starting with the given docID by the current thread.
static BlockSourceReader.LeafIteratorLookup	lookupFromFieldNames(FieldNamesFieldMapper.FieldNamesFieldType fieldNames, String fieldName)	Build a BlockSourceReader.LeafIteratorLookup which checks for the field in the field names field.
static BlockSourceReader.LeafIteratorLookup	lookupFromNorms(String fieldName)	Build a BlockSourceReader.LeafIteratorLookup which checks for norms of a text field.
static BlockSourceReader.LeafIteratorLookup	lookupMatchingAll()	Build a BlockSourceReader.LeafIteratorLookup which checks for norms of a text field.
final void	read(int docId, BlockLoader.StoredFields storedFields, BlockLoader.Builder builder)	Reads the values of the given document into the builder.

Methods inherited from class java.lang.Object

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

Method Details

read

public final void read(int docId,
 BlockLoader.StoredFields storedFields,
 BlockLoader.Builder builder)
                throws IOException

Description copied from interface: BlockLoader.RowStrideReader

Reads the values of the given document into the builder.

Specified by:

read in interface BlockLoader.RowStrideReader

Throws:

IOException

append

protected abstract void append(BlockLoader.Builder builder,
 Object v)

canReuse

public final boolean canReuse(int startingDocID)

Description copied from interface: BlockLoader.Reader

Checks if the reader can be used to read a range documents starting with the given docID by the current thread.

Specified by:

canReuse in interface BlockLoader.Reader

lookupMatchingAll

public static BlockSourceReader.LeafIteratorLookup lookupMatchingAll()

Build a BlockSourceReader.LeafIteratorLookup which checks for norms of a text field.

lookupFromFieldNames

public static BlockSourceReader.LeafIteratorLookup lookupFromFieldNames(FieldNamesFieldMapper.FieldNamesFieldType fieldNames,
 String fieldName)

Build a BlockSourceReader.LeafIteratorLookup which checks for the field in the field names field.

lookupFromNorms

public static BlockSourceReader.LeafIteratorLookup lookupFromNorms(String fieldName)

Build a BlockSourceReader.LeafIteratorLookup which checks for norms of a text field.