Package org.apache.pinot.segment.local.segment.index.loader.invertedindex

Class TextIndexHandler

java.lang.Object

org.apache.pinot.segment.local.segment.index.loader.BaseIndexHandler

org.apache.pinot.segment.local.segment.index.loader.invertedindex.TextIndexHandler

All Implemented Interfaces:

IndexHandler

public class TextIndexHandler
extends BaseIndexHandler

Helper class for text indexes used by SegmentPreProcessor. to create text index for column during segment load time. Currently text index is always created (if enabled on a column) during segment generation (1) A new segment with text index is created/refreshed. Server loads the segment. The handler detects the existence of text index and returns. (2) A reload is issued on an existing segment with existing text index. The handler detects the existence of text index and returns. (3) A reload is issued on an existing segment after text index is enabled on an existing column. Read the forward index to create text index. (4) A reload is issued on an existing segment after text index is enabled on a newly added column. In this case, the default column handler would have taken care of adding forward index for the new column. Read the forward index to create text index.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.pinot.segment.spi.index.IndexHandler

IndexHandler.NoOp

Field Summary

Fields inherited from class org.apache.pinot.segment.local.segment.index.loader.BaseIndexHandler

_fieldIndexConfigs, _segmentDirectory, _tableConfig, _tmpForwardIndexColumns

Constructor Summary

Constructors

Constructor	Description
TextIndexHandler(SegmentDirectory segmentDirectory, Map<String,FieldIndexConfigs> fieldIndexConfigs, TableConfig tableConfig)

Method Summary

Modifier and Type	Method	Description
boolean	needUpdateIndices(SegmentDirectory.Reader segmentReader)
void	updateIndices(SegmentDirectory.Writer segmentWriter)

Methods inherited from class org.apache.pinot.segment.local.segment.index.loader.BaseIndexHandler

createForwardIndexIfNeeded, postUpdateIndicesCleanup

Methods inherited from class java.lang.Object

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

Constructor Detail

TextIndexHandler

public TextIndexHandler(SegmentDirectory segmentDirectory,
                        Map<String,FieldIndexConfigs> fieldIndexConfigs,
                        @Nullable
                        TableConfig tableConfig)

Method Detail

needUpdateIndices

public boolean needUpdateIndices(SegmentDirectory.Reader segmentReader)

updateIndices

public void updateIndices(SegmentDirectory.Writer segmentWriter)
                   throws Exception

Throws:

Exception