Package org.apache.iotdb.tsfile.write.schema

Class Schema

java.lang.Object

org.apache.iotdb.tsfile.write.schema.Schema

All Implemented Interfaces:

java.io.Serializable

public class Schema
extends java.lang.Object
implements java.io.Serializable

The schema of timeseries that exist in this file. The schemaTemplates is a simplified manner to batch create schema of timeseries.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
Schema()
Schema(java.util.Map<Path,MeasurementGroup> knownSchema)

Method Summary

Modifier and Type	Method	Description
boolean	containsDevice(Path devicePath)	check if this schema contains a measurement named measurementId.
void	extendTemplate(java.lang.String templateName, MeasurementSchema descriptor)	If template does not exist, an nonAligned timeseries is created by default
java.util.Map<Path,MeasurementGroup>	getRegisteredTimeseriesMap()
java.util.Map<java.lang.String,MeasurementGroup>	getSchemaTemplates()
MeasurementGroup	getSeriesSchema(Path devicePath)
void	registerDevice(java.lang.String deviceId, java.lang.String templateName)
void	registerMeasurementGroup(Path devicePath, MeasurementGroup measurementGroup)
void	registerSchemaTemplate(java.lang.String templateName, MeasurementGroup measurementGroup)
void	registerTimeseries(Path devicePath, MeasurementSchema measurementSchema)

Methods inherited from class java.lang.Object

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

Constructor Detail

Schema

public Schema()

Schema

public Schema(java.util.Map<Path,MeasurementGroup> knownSchema)

Method Detail

registerTimeseries

public void registerTimeseries(Path devicePath,
                               MeasurementSchema measurementSchema)

registerMeasurementGroup

public void registerMeasurementGroup(Path devicePath,
                                     MeasurementGroup measurementGroup)

registerSchemaTemplate

public void registerSchemaTemplate(java.lang.String templateName,
                                   MeasurementGroup measurementGroup)

extendTemplate

public void extendTemplate(java.lang.String templateName,
                           MeasurementSchema descriptor)

If template does not exist, an nonAligned timeseries is created by default

registerDevice

public void registerDevice(java.lang.String deviceId,
                           java.lang.String templateName)

getSeriesSchema

public MeasurementGroup getSeriesSchema(Path devicePath)

getSchemaTemplates

public java.util.Map<java.lang.String,MeasurementGroup> getSchemaTemplates()

containsDevice

public boolean containsDevice(Path devicePath)

check if this schema contains a measurement named measurementId.

getRegisteredTimeseriesMap

public java.util.Map<Path,MeasurementGroup> getRegisteredTimeseriesMap()