Package org.apache.iotdb.db.query.executor

Class QueryRouter

java.lang.Object

org.apache.iotdb.db.query.executor.QueryRouter

All Implemented Interfaces:

IQueryRouter

public class QueryRouter
extends java.lang.Object
implements IQueryRouter

Query entrance class of IoTDB query process. All query clause will be transformed to physical plan, physical plan will be executed by EngineQueryRouter.

Constructor Summary

Constructors

Constructor	Description
QueryRouter()

Method Summary

Modifier and Type	Method	Description
org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet	aggregate(AggregationPlan aggregationPlan, QueryContext context)	Execute aggregation query.
org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet	fill(FillQueryPlan fillQueryPlan, QueryContext context)	Execute fill query.
protected AggregationExecutor	getAggregationExecutor(QueryContext context, AggregationPlan aggregationPlan)
protected FillQueryExecutor	getFillExecutor(FillQueryPlan plan)
protected GroupByWithoutValueFilterDataSet	getGroupByWithoutValueFilterDataSet(QueryContext context, GroupByTimePlan plan)
protected GroupByWithValueFilterDataSet	getGroupByWithValueFilterDataSet(QueryContext context, GroupByTimePlan plan)
protected LastQueryExecutor	getLastQueryExecutor(LastQueryPlan lastQueryPlan)
protected RawDataQueryExecutor	getRawDataQueryExecutor(RawDataQueryPlan queryPlan)
org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet	groupBy(GroupByTimePlan groupByTimePlan, QueryContext context)	Execute groupBy query.
org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet	groupByFill(GroupByTimeFillPlan groupByFillPlan, QueryContext context)	Execute group by fill query
org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet	lastQuery(LastQueryPlan lastQueryPlan, QueryContext context)	Execute last query
org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet	rawDataQuery(RawDataQueryPlan queryPlan, QueryContext context)	Execute physical plan.
org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet	udafQuery(UDAFPlan udafPlan, QueryContext context)	Execute UDAF query.
org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet	udtfQuery(UDTFPlan udtfPlan, QueryContext context)	Execute UDTF query

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryRouter

public QueryRouter()

Method Detail

rawDataQuery

public org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet rawDataQuery(RawDataQueryPlan queryPlan,
                                                                            QueryContext context)
                                                                     throws StorageEngineException,
                                                                            QueryProcessException

Description copied from interface: IQueryRouter

Execute physical plan.

Specified by:

rawDataQuery in interface IQueryRouter

Throws:

StorageEngineException

QueryProcessException

getRawDataQueryExecutor

protected RawDataQueryExecutor getRawDataQueryExecutor(RawDataQueryPlan queryPlan)

aggregate

public org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet aggregate(AggregationPlan aggregationPlan,
                                                                         QueryContext context)
                                                                  throws StorageEngineException,
                                                                         QueryProcessException,
                                                                         java.io.IOException

Description copied from interface: IQueryRouter

Execute aggregation query.

Specified by:

aggregate in interface IQueryRouter

Throws:

StorageEngineException

QueryProcessException

java.io.IOException

udafQuery

public org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet udafQuery(UDAFPlan udafPlan,
                                                                         QueryContext context)
                                                                  throws org.apache.iotdb.tsfile.exception.filter.QueryFilterOptimizationException,
                                                                         StorageEngineException,
                                                                         java.io.IOException,
                                                                         QueryProcessException

Description copied from interface: IQueryRouter

Execute UDAF query.

Specified by:

udafQuery in interface IQueryRouter

Throws:

org.apache.iotdb.tsfile.exception.filter.QueryFilterOptimizationException

StorageEngineException

java.io.IOException

QueryProcessException

getAggregationExecutor

protected AggregationExecutor getAggregationExecutor(QueryContext context,
                                                     AggregationPlan aggregationPlan)

groupBy

public org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet groupBy(GroupByTimePlan groupByTimePlan,
                                                                       QueryContext context)
                                                                throws org.apache.iotdb.tsfile.exception.filter.QueryFilterOptimizationException,
                                                                       StorageEngineException,
                                                                       QueryProcessException,
                                                                       java.io.IOException

Description copied from interface: IQueryRouter

Execute groupBy query.

Specified by:

groupBy in interface IQueryRouter

Throws:

org.apache.iotdb.tsfile.exception.filter.QueryFilterOptimizationException

StorageEngineException

QueryProcessException

java.io.IOException

getGroupByWithoutValueFilterDataSet

protected GroupByWithoutValueFilterDataSet getGroupByWithoutValueFilterDataSet(QueryContext context,
                                                                               GroupByTimePlan plan)

getGroupByWithValueFilterDataSet

protected GroupByWithValueFilterDataSet getGroupByWithValueFilterDataSet(QueryContext context,
                                                                         GroupByTimePlan plan)

fill

public org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet fill(FillQueryPlan fillQueryPlan,
                                                                    QueryContext context)
                                                             throws StorageEngineException,
                                                                    QueryProcessException,
                                                                    java.io.IOException

Description copied from interface: IQueryRouter

Execute fill query.

Specified by:

fill in interface IQueryRouter

Throws:

StorageEngineException

QueryProcessException

java.io.IOException

getFillExecutor

protected FillQueryExecutor getFillExecutor(FillQueryPlan plan)

groupByFill

public org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet groupByFill(GroupByTimeFillPlan groupByFillPlan,
                                                                           QueryContext context)
                                                                    throws StorageEngineException,
                                                                           QueryProcessException

Description copied from interface: IQueryRouter

Execute group by fill query

Specified by:

groupByFill in interface IQueryRouter

Throws:

StorageEngineException

QueryProcessException

lastQuery

public org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet lastQuery(LastQueryPlan lastQueryPlan,
                                                                         QueryContext context)
                                                                  throws StorageEngineException,
                                                                         QueryProcessException,
                                                                         java.io.IOException

Description copied from interface: IQueryRouter

Execute last query

Specified by:

lastQuery in interface IQueryRouter

Throws:

StorageEngineException

QueryProcessException

java.io.IOException

getLastQueryExecutor

protected LastQueryExecutor getLastQueryExecutor(LastQueryPlan lastQueryPlan)

udtfQuery

public org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet udtfQuery(UDTFPlan udtfPlan,
                                                                         QueryContext context)
                                                                  throws StorageEngineException,
                                                                         QueryProcessException,
                                                                         java.io.IOException,
                                                                         java.lang.InterruptedException

Description copied from interface: IQueryRouter

Execute UDTF query

Specified by:

udtfQuery in interface IQueryRouter

Throws:

StorageEngineException

QueryProcessException

java.io.IOException

java.lang.InterruptedException