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

Class GroupByWithValueFilterDataSet

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.GroupByWithValueFilterDataSet

public class GroupByWithValueFilterDataSet
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 GroupByTimePlan	groupByTimePlan
protected int	timeStampFetchSize	group by batch calculation size.

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

Modifier	Constructor	Description
protected	GroupByWithValueFilterDataSet()
	GroupByWithValueFilterDataSet(long queryId, GroupByTimePlan groupByTimePlan)
	GroupByWithValueFilterDataSet(QueryContext context, GroupByTimePlan groupByTimePlan)	constructor.

Method Summary

Modifier and Type	Method	Description
AggregateResult[]	calcResult(long curStartTime, long curEndTime)
protected AggregateResult[]	getNextAggregateResult()
protected IReaderByTimestamp	getReaderByTime(org.apache.iotdb.commons.path.PartialPath path, RawDataQueryPlan queryPlan, QueryContext context)
protected org.apache.iotdb.tsfile.read.query.timegenerator.TimeGenerator	getTimeGenerator(QueryContext context, RawDataQueryPlan queryPlan)
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

groupByTimePlan

protected GroupByTimePlan groupByTimePlan

timeStampFetchSize

protected int timeStampFetchSize

group by batch calculation size.

Constructor Detail

GroupByWithValueFilterDataSet

protected GroupByWithValueFilterDataSet()

GroupByWithValueFilterDataSet

public GroupByWithValueFilterDataSet(QueryContext context,
                                     GroupByTimePlan groupByTimePlan)

constructor.

GroupByWithValueFilterDataSet

public GroupByWithValueFilterDataSet(long queryId,
                                     GroupByTimePlan groupByTimePlan)

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

getTimeGenerator

protected org.apache.iotdb.tsfile.read.query.timegenerator.TimeGenerator getTimeGenerator(QueryContext context,
                                                                                          RawDataQueryPlan queryPlan)
                                                                                   throws StorageEngineException

Throws:

StorageEngineException

getReaderByTime

protected IReaderByTimestamp getReaderByTime(org.apache.iotdb.commons.path.PartialPath path,
                                             RawDataQueryPlan queryPlan,
                                             QueryContext context)
                                      throws StorageEngineException,
                                             QueryProcessException

Throws:

StorageEngineException

QueryProcessException

getNextAggregateResult

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

Specified by:

getNextAggregateResult in class GroupByTimeEngineDataSet

Throws:

java.io.IOException

calcResult

public AggregateResult[] calcResult(long curStartTime,
                                    long curEndTime)
                             throws java.io.IOException

Throws:

java.io.IOException