Package org.apache.iotdb.db.query.dataset.groupby

Class GroupByWithoutValueFilterDataSet

java.lang.Object

org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet

org.apache.iotdb.db.query.dataset.groupby.GroupByTimeDataSet

org.apache.iotdb.db.query.dataset.groupby.GroupByTimeEngineDataSet

org.apache.iotdb.db.query.dataset.groupby.GroupByWithoutValueFilterDataSet

public class GroupByWithoutValueFilterDataSet
extends GroupByTimeEngineDataSet

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet

org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet.EndPoint

Field Summary

Fields

Modifier and Type	Field	Description
protected java.util.Map<AlignedPath,AlignedGroupByExecutor>	alignedPathExecutors
protected java.util.Map<AlignedPath,java.util.List<java.util.List<java.lang.Integer>>>	alignedPathToAggrIndexesMap	aligned path -> result indexes for each aggregation
protected java.util.Map<org.apache.iotdb.commons.path.PartialPath,GroupByExecutor>	pathExecutors
protected java.util.Map<org.apache.iotdb.commons.path.PartialPath,java.util.List<java.lang.Integer>>	pathToAggrIndexesMap	non-aligned path -> result index for each aggregation

Fields inherited from class org.apache.iotdb.db.query.dataset.groupby.GroupByTimeDataSet

curAggregateResults, curAggrTimeRange, curPreAggrTimeRange, endTime, hasCachedTimeInterval, interval, isIntervalByMonth, isSlidingStepByMonth, leftCRightO, queryId, slidingStep, slidingWindowGroupByExecutors, startTime

Fields inherited from class org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet

alreadyReturnedRowNum, ascending, columnNum, dataTypes, endPoint, fetchSize, paths, rowLimit, rowOffset, withoutAllNull, withoutAnyNull, withoutNullColumnsIndex

Constructor Summary

Constructors

Constructor	Description
GroupByWithoutValueFilterDataSet()
GroupByWithoutValueFilterDataSet(QueryContext context, GroupByTimePlan groupByTimePlan)	constructor.

Method Summary

Modifier and Type	Method	Description
protected AlignedGroupByExecutor	getAlignedGroupByExecutor(org.apache.iotdb.commons.path.PartialPath path, QueryContext context, org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter, TsFileFilter fileFilter, boolean ascending)
protected GroupByExecutor	getGroupByExecutor(org.apache.iotdb.commons.path.PartialPath path, java.util.Set<java.lang.String> allSensors, QueryContext context, org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter, TsFileFilter fileFilter, boolean ascending)
protected AggregateResult[]	getNextAggregateResult()
void	initGroupBy(QueryContext context, GroupByTimePlan groupByTimePlan)	init reader and aggregate function.

Methods inherited from class org.apache.iotdb.db.query.dataset.groupby.GroupByTimeEngineDataSet

constructRowRecord, getCurAggregateResults, isEndCal, nextWithoutConstraint, updatePreAggrInterval

Methods inherited from class org.apache.iotdb.db.query.dataset.groupby.GroupByTimeDataSet

getStartTime, hasNextWithoutConstraint, initGroupByTimeDataSetFields, nextTimePartition

Methods inherited from class org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet

decreaseAlreadyReturnedRowNum, getColumnNum, getDataTypes, getEndPoint, getPaths, getRowLimit, getRowOffset, getWithoutNullColumnsIndex, hasLimit, hasNext, initQueryDataSetFields, isWithoutAllNull, isWithoutAnyNull, next, setColumnNum, setDataTypes, setEndPoint, setFetchSize, setRowLimit, setRowOffset, setWithoutAllNull, setWithoutAnyNull, setWithoutNullColumnsIndex, withoutNullFilter

Methods inherited from class java.lang.Object

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

Field Detail

pathExecutors

protected java.util.Map<org.apache.iotdb.commons.path.PartialPath,GroupByExecutor> pathExecutors

alignedPathExecutors

protected java.util.Map<AlignedPath,AlignedGroupByExecutor> alignedPathExecutors

pathToAggrIndexesMap

protected java.util.Map<org.apache.iotdb.commons.path.PartialPath,java.util.List<java.lang.Integer>> pathToAggrIndexesMap

non-aligned path -> result index for each aggregation

e.g.,

deduplicated paths: s1, s2, s1; deduplicated aggregations: count, count, sum

s1 -> 0, 2; s2 -> 1

alignedPathToAggrIndexesMap

protected java.util.Map<AlignedPath,java.util.List<java.util.List<java.lang.Integer>>> alignedPathToAggrIndexesMap

aligned path -> result indexes for each aggregation

e.g.,

deduplicated paths: d1.s1, d1.s2, d1.s1; deduplicated aggregations: count, count, sum

d1[s1, s2] -> [[0, 2], [1]]

Constructor Detail

GroupByWithoutValueFilterDataSet

public GroupByWithoutValueFilterDataSet()

GroupByWithoutValueFilterDataSet

public GroupByWithoutValueFilterDataSet(QueryContext context,
                                        GroupByTimePlan groupByTimePlan)

constructor.

Method Detail

initGroupBy

public void initGroupBy(QueryContext context,
                        GroupByTimePlan groupByTimePlan)
                 throws StorageEngineException,
                        QueryProcessException

init reader and aggregate function. This method should be called once after initializing

Throws:

StorageEngineException

QueryProcessException

getNextAggregateResult

protected AggregateResult[] getNextAggregateResult()
                                            throws java.io.IOException

Specified by:

getNextAggregateResult in class GroupByTimeEngineDataSet

Throws:

java.io.IOException

getGroupByExecutor

protected GroupByExecutor getGroupByExecutor(org.apache.iotdb.commons.path.PartialPath path,
                                             java.util.Set<java.lang.String> allSensors,
                                             QueryContext context,
                                             org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter,
                                             TsFileFilter fileFilter,
                                             boolean ascending)
                                      throws StorageEngineException,
                                             QueryProcessException

Throws:

StorageEngineException

QueryProcessException

getAlignedGroupByExecutor

protected AlignedGroupByExecutor getAlignedGroupByExecutor(org.apache.iotdb.commons.path.PartialPath path,
                                                           QueryContext context,
                                                           org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter,
                                                           TsFileFilter fileFilter,
                                                           boolean ascending)
                                                    throws StorageEngineException,
                                                           QueryProcessException

Throws:

StorageEngineException

QueryProcessException