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

Class RawDataQueryExecutor

java.lang.Object

org.apache.iotdb.db.query.executor.RawDataQueryExecutor

Direct Known Subclasses:

UDFQueryExecutor

public class RawDataQueryExecutor
extends java.lang.Object

IoTDB query executor.

Field Summary

Fields

Modifier and Type	Field	Description
protected RawDataQueryPlan	queryPlan

Constructor Summary

Constructors

Constructor	Description
RawDataQueryExecutor(RawDataQueryPlan queryPlan)

Method Summary

Modifier and Type	Method	Description
org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet	executeNonAlign(QueryContext context)
org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet	executeWithoutValueFilter(QueryContext context)	without filter or with global time filter.
org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet	executeWithValueFilter(QueryContext context)	executeWithValueFilter query.
protected IReaderByTimestamp	getReaderByTimestamp(org.apache.iotdb.commons.path.PartialPath path, java.util.Set<java.lang.String> allSensors, org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType, QueryContext context)
protected org.apache.iotdb.tsfile.read.query.timegenerator.TimeGenerator	getTimeGenerator(QueryContext context, RawDataQueryPlan queryPlan)
protected java.util.List<ManagedSeriesReader>	initManagedSeriesReader(QueryContext context)
protected org.apache.iotdb.tsfile.utils.Pair<java.util.List<IReaderByTimestamp>,java.util.List<java.util.List<java.lang.Integer>>>	initSeriesReaderByTimestamp(QueryContext context, RawDataQueryPlan queryPlan, java.util.List<java.lang.Boolean> cached, org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter)	init IReaderByTimestamp for each not cached PartialPath, if it's already been cached, the corresponding IReaderByTimestamp will be null group these not cached PartialPath to one AlignedPath if they belong to same aligned device
protected org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet	needRedirect(QueryContext context, boolean hasValueFilter)	Check whether need to redirect query to other node.

Methods inherited from class java.lang.Object

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

Field Detail

queryPlan

protected RawDataQueryPlan queryPlan

Constructor Detail

RawDataQueryExecutor

public RawDataQueryExecutor(RawDataQueryPlan queryPlan)

Method Detail

executeWithoutValueFilter

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

without filter or with global time filter.

Throws:

StorageEngineException

QueryProcessException

executeNonAlign

public final org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet executeNonAlign(QueryContext context)
                                                                              throws StorageEngineException,
                                                                                     QueryProcessException

Throws:

StorageEngineException

QueryProcessException

initManagedSeriesReader

protected java.util.List<ManagedSeriesReader> initManagedSeriesReader(QueryContext context)
                                                               throws StorageEngineException,
                                                                      QueryProcessException

Throws:

StorageEngineException

QueryProcessException

executeWithValueFilter

public final org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet executeWithValueFilter(QueryContext context)
                                                                                     throws StorageEngineException,
                                                                                            QueryProcessException

executeWithValueFilter query.

Returns:

QueryDataSet object

Throws:

StorageEngineException - StorageEngineException

QueryProcessException

initSeriesReaderByTimestamp

protected org.apache.iotdb.tsfile.utils.Pair<java.util.List<IReaderByTimestamp>,java.util.List<java.util.List<java.lang.Integer>>> initSeriesReaderByTimestamp(QueryContext context,
                                                                                                                                                                     RawDataQueryPlan queryPlan,
                                                                                                                                                                     java.util.List<java.lang.Boolean> cached,
                                                                                                                                                                     org.apache.iotdb.tsfile.read.filter.basic.Filter timeFilter)
                                                                                                                                                              throws QueryProcessException,
                                                                                                                                                                     StorageEngineException

init IReaderByTimestamp for each not cached PartialPath, if it's already been cached, the corresponding IReaderByTimestamp will be null group these not cached PartialPath to one AlignedPath if they belong to same aligned device

Returns:

List if it's already been cached, the corresponding IReaderByTimestamp will be null List> IReaderByTimestamp's corresponding index list to the result RowRecord.

Throws:

QueryProcessException

StorageEngineException

getReaderByTimestamp

protected IReaderByTimestamp getReaderByTimestamp(org.apache.iotdb.commons.path.PartialPath path,
                                                  java.util.Set<java.lang.String> allSensors,
                                                  org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType,
                                                  QueryContext context)
                                           throws StorageEngineException,
                                                  QueryProcessException

Throws:

StorageEngineException

QueryProcessException

getTimeGenerator

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

Throws:

StorageEngineException

needRedirect

protected org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet needRedirect(QueryContext context,
                                                                               boolean hasValueFilter)
                                                                        throws StorageEngineException,
                                                                               QueryProcessException

Check whether need to redirect query to other node.

Parameters:

context - query context

hasValueFilter - if has value filter, we need to check timegenerator

Returns:

dummyDataSet to avoid more cost, if null, no need

Throws:

StorageEngineException

QueryProcessException