Package org.apache.iotdb.db.query.reader.series

Interface IAggregateReader

All Known Implementing Classes:

AlignedSeriesAggregateReader, SeriesAggregateReader

public interface IAggregateReader

Method Summary

Modifier and Type	Method	Description
boolean	canUseCurrentChunkStatistics()
boolean	canUseCurrentFileStatistics()
boolean	canUseCurrentPageStatistics()	only be used without value filter
org.apache.iotdb.tsfile.file.metadata.statistics.Statistics	currentChunkStatistics()
org.apache.iotdb.tsfile.file.metadata.statistics.Statistics	currentFileStatistics()
org.apache.iotdb.tsfile.file.metadata.statistics.Statistics	currentPageStatistics()	only be used without value filter
boolean	hasNextChunk()
boolean	hasNextFile()
boolean	hasNextPage()
boolean	isAscending()
org.apache.iotdb.tsfile.read.common.BatchData	nextPage()
void	skipCurrentChunk()
void	skipCurrentFile()
void	skipCurrentPage()

Method Detail

hasNextFile

boolean hasNextFile()
             throws java.io.IOException

Throws:

java.io.IOException

canUseCurrentFileStatistics

boolean canUseCurrentFileStatistics()
                             throws java.io.IOException

Throws:

java.io.IOException

currentFileStatistics

org.apache.iotdb.tsfile.file.metadata.statistics.Statistics currentFileStatistics()
                                                                           throws java.io.IOException

Throws:

java.io.IOException

skipCurrentFile

void skipCurrentFile()

hasNextChunk

boolean hasNextChunk()
              throws java.io.IOException

Throws:

java.io.IOException

canUseCurrentChunkStatistics

boolean canUseCurrentChunkStatistics()
                              throws java.io.IOException

Throws:

java.io.IOException

currentChunkStatistics

org.apache.iotdb.tsfile.file.metadata.statistics.Statistics currentChunkStatistics()
                                                                            throws java.io.IOException

Throws:

java.io.IOException

skipCurrentChunk

void skipCurrentChunk()

hasNextPage

boolean hasNextPage()
             throws java.io.IOException

Throws:

java.io.IOException

canUseCurrentPageStatistics

boolean canUseCurrentPageStatistics()
                             throws java.io.IOException

only be used without value filter

Throws:

java.io.IOException

currentPageStatistics

org.apache.iotdb.tsfile.file.metadata.statistics.Statistics currentPageStatistics()
                                                                           throws java.io.IOException

only be used without value filter

Throws:

java.io.IOException

skipCurrentPage

void skipCurrentPage()

nextPage

org.apache.iotdb.tsfile.read.common.BatchData nextPage()
                                                throws java.io.IOException

Throws:

java.io.IOException

isAscending

boolean isAscending()