org.apache.iotdb.db.metadata.path

类 AlignedPath

java.lang.Object

org.apache.iotdb.tsfile.read.common.Path

org.apache.iotdb.db.metadata.path.PartialPath

org.apache.iotdb.db.metadata.path.AlignedPath

所有已实现的接口:

Serializable, Cloneable, Comparable<Path>

public class AlignedPath
extends PartialPath

VectorPartialPath represents many fullPaths of aligned timeseries. In the AlignedPath, the nodes in PartialPath is deviceId e.g. VectorPartialPath nodes=root.sg1.alignedD1 measurementList=[s1, s2]

另请参阅:

序列化表格

字段概要

字段

限定符和类型	字段和说明
static String	VECTOR_PLACEHOLDER

从类继承的字段 org.apache.iotdb.db.metadata.path.PartialPath

nodes

从类继承的字段 org.apache.iotdb.tsfile.read.common.Path

device, fullPath

构造器概要

构造器

构造器和说明
AlignedPath()
AlignedPath(MeasurementPath path)
AlignedPath(PartialPath vectorPath, String subSensor)
AlignedPath(String vectorPath)
AlignedPath(String vectorPath, List<String> subSensorsList)
AlignedPath(String vectorPath, List<String> measurementList, List<IMeasurementSchema> schemaList)
AlignedPath(String vectorPath, String subSensor)

方法概要

限定符和类型	方法和说明
void	addMeasurement(MeasurementPath measurementPath)
void	addMeasurements(List<String> measurements)
void	addSchemas(List<IMeasurementSchema> schemas)
AlignedPath	clone()
PartialPath	copy()
AlignedLastPointReader	createLastPointReader(TSDataType dataType, Set<String> deviceMeasurements, QueryContext context, QueryDataSource dataSource, long queryTime, Filter timeFilter)
AlignedSeriesReader	createSeriesReader(Set<String> allSensors, TSDataType dataType, QueryContext context, List<TsFileResource> seqFileResource, List<TsFileResource> unseqFileResource, Filter timeFilter, Filter valueFilter, boolean ascending)
AlignedSeriesReader	createSeriesReader(Set<String> allSensors, TSDataType dataType, QueryContext context, QueryDataSource dataSource, Filter timeFilter, Filter valueFilter, TsFileFilter fileFilter, boolean ascending)
TsFileResource	createTsFileResource(List<ReadOnlyMemChunk> readOnlyMemChunk, List<IChunkMetadata> chunkMetadataList, TsFileResource originTsFileResource)
boolean	equals(Object o)
AlignedTimeSeriesMetadata	generateTimeSeriesMetadata(List<ReadOnlyMemChunk> readOnlyMemChunk, List<IChunkMetadata> chunkMetadataList) Because the unclosed tsfile don't have TimeSeriesMetadata and memtables in the memory don't have chunkMetadata, but query will use these, so we need to generate it for them.
int	getColumnNum()
String	getDevice()
PartialPath	getDevicePath()
String	getMeasurement()
String	getMeasurement(int index)
List<String>	getMeasurementList()
VectorMeasurementSchema	getMeasurementSchema()
PartialPath	getPathWithMeasurement(int index)
ReadOnlyMemChunk	getReadOnlyMemChunkFromMemTable(IMemTable memTable, List<Pair<Modification,IMemTable>> modsToMemtable, long timeLowerBound) get the ReadOnlyMemChunk from the given MemTable.
List<IMeasurementSchema>	getSchemaList()
TSDataType	getSeriesType()
List<IChunkMetadata>	getVisibleMetadataListFromWriter(RestorableTsFileIOWriter writer, TsFileResource tsFileResource, QueryContext context)
int	hashCode()
void	mergeAlignedPath(AlignedPath alignedPath) merge another aligned path's sub sensors into this one
void	setMeasurementList(List<String> measurementList)

从类继承的方法 org.apache.iotdb.db.metadata.path.PartialPath

alterPrefixPath, compareTo, concatNode, concatPath, concatPath, equals, fromStringList, getFirstNode, getFullPath, getFullPathWithAlias, getMeasurementAlias, getModificationsForMemtable, getNodeLength, getNodes, getTailNode, isMeasurementAliasExists, matchFullPath, matchPrefixPath, setMeasurementAlias, startsWith, toString, toStringList, toTSFilePath

从类继承的方法 org.apache.iotdb.tsfile.read.common.Path

setMeasurement

从类继承的方法 java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

字段详细资料

VECTOR_PLACEHOLDER

public static final String VECTOR_PLACEHOLDER

另请参阅:

常量字段值

构造器详细资料

AlignedPath

public AlignedPath()

AlignedPath

public AlignedPath(String vectorPath,
                   List<String> subSensorsList)
            throws IllegalPathException

抛出:

IllegalPathException

AlignedPath

public AlignedPath(String vectorPath,
                   List<String> measurementList,
                   List<IMeasurementSchema> schemaList)
            throws IllegalPathException

抛出:

IllegalPathException

AlignedPath

public AlignedPath(String vectorPath,
                   String subSensor)
            throws IllegalPathException

抛出:

IllegalPathException

AlignedPath

public AlignedPath(PartialPath vectorPath,
                   String subSensor)

AlignedPath

public AlignedPath(MeasurementPath path)

AlignedPath

public AlignedPath(String vectorPath)
            throws IllegalPathException

抛出:

IllegalPathException

方法详细资料

getDevicePath

public PartialPath getDevicePath()

覆盖:

getDevicePath 在类中 PartialPath

getDevice

public String getDevice()

覆盖:

getDevice 在类中 PartialPath

getMeasurement

public String getMeasurement()

覆盖:

getMeasurement 在类中 PartialPath

getMeasurementList

public List<String> getMeasurementList()

getMeasurement

public String getMeasurement(int index)

getPathWithMeasurement

public PartialPath getPathWithMeasurement(int index)

setMeasurementList

public void setMeasurementList(List<String> measurementList)

addMeasurements

public void addMeasurements(List<String> measurements)

addSchemas

public void addSchemas(List<IMeasurementSchema> schemas)

addMeasurement

public void addMeasurement(MeasurementPath measurementPath)

mergeAlignedPath

public void mergeAlignedPath(AlignedPath alignedPath)

merge another aligned path's sub sensors into this one

参数:

alignedPath - The caller need to ensure the alignedPath must have same device as this one and these two doesn't have same sub sensor

getSchemaList

public List<IMeasurementSchema> getSchemaList()

getMeasurementSchema

public VectorMeasurementSchema getMeasurementSchema()

覆盖:

getMeasurementSchema 在类中 PartialPath

getSeriesType

public TSDataType getSeriesType()

覆盖:

getSeriesType 在类中 PartialPath

copy

public PartialPath copy()

覆盖:

copy 在类中 PartialPath

equals

public boolean equals(Object o)

覆盖:

equals 在类中 PartialPath

hashCode

public int hashCode()

覆盖:

hashCode 在类中 PartialPath

createLastPointReader

public AlignedLastPointReader createLastPointReader(TSDataType dataType,
                                                    Set<String> deviceMeasurements,
                                                    QueryContext context,
                                                    QueryDataSource dataSource,
                                                    long queryTime,
                                                    Filter timeFilter)

覆盖:

createLastPointReader 在类中 PartialPath

createSeriesReader

public AlignedSeriesReader createSeriesReader(Set<String> allSensors,
                                              TSDataType dataType,
                                              QueryContext context,
                                              QueryDataSource dataSource,
                                              Filter timeFilter,
                                              Filter valueFilter,
                                              TsFileFilter fileFilter,
                                              boolean ascending)

覆盖:

createSeriesReader 在类中 PartialPath

createSeriesReader

public AlignedSeriesReader createSeriesReader(Set<String> allSensors,
                                              TSDataType dataType,
                                              QueryContext context,
                                              List<TsFileResource> seqFileResource,
                                              List<TsFileResource> unseqFileResource,
                                              Filter timeFilter,
                                              Filter valueFilter,
                                              boolean ascending)

覆盖:

createSeriesReader 在类中 PartialPath

createTsFileResource

public TsFileResource createTsFileResource(List<ReadOnlyMemChunk> readOnlyMemChunk,
                                           List<IChunkMetadata> chunkMetadataList,
                                           TsFileResource originTsFileResource)
                                    throws IOException

覆盖:

createTsFileResource 在类中 PartialPath

抛出:

IOException

generateTimeSeriesMetadata

public AlignedTimeSeriesMetadata generateTimeSeriesMetadata(List<ReadOnlyMemChunk> readOnlyMemChunk,
                                                            List<IChunkMetadata> chunkMetadataList)
                                                     throws IOException

Because the unclosed tsfile don't have TimeSeriesMetadata and memtables in the memory don't have chunkMetadata, but query will use these, so we need to generate it for them.

覆盖:

generateTimeSeriesMetadata 在类中 PartialPath

抛出:

IOException

getReadOnlyMemChunkFromMemTable

public ReadOnlyMemChunk getReadOnlyMemChunkFromMemTable(IMemTable memTable,
                                                        List<Pair<Modification,IMemTable>> modsToMemtable,
                                                        long timeLowerBound)
                                                 throws QueryProcessException,
                                                        IOException

从类复制的说明: PartialPath

get the ReadOnlyMemChunk from the given MemTable.

覆盖:

getReadOnlyMemChunkFromMemTable 在类中 PartialPath

返回:

ReadOnlyMemChunk

抛出:

QueryProcessException

IOException

getVisibleMetadataListFromWriter

public List<IChunkMetadata> getVisibleMetadataListFromWriter(RestorableTsFileIOWriter writer,
                                                             TsFileResource tsFileResource,
                                                             QueryContext context)

覆盖:

getVisibleMetadataListFromWriter 在类中 PartialPath

getColumnNum

public int getColumnNum()

覆盖:

getColumnNum 在类中 Path

clone

public AlignedPath clone()

覆盖:

clone 在类中 PartialPath