Package org.apache.iotdb.db.mpp.common.schematree

Interface ISchemaTree

All Known Implementing Classes:

ClusterSchemaTree, DeviceGroupSchemaTree

public interface ISchemaTree

Method Summary

Modifier and Type	Method	Description
java.util.List<MeasurementPath>	getAllMeasurement()
java.lang.String	getBelongedStorageGroup(java.lang.String pathName)	Get storage group name by path
java.lang.String	getBelongedStorageGroup(org.apache.iotdb.commons.path.PartialPath path)
java.util.List<DeviceSchemaInfo>	getMatchedDevices(org.apache.iotdb.commons.path.PartialPath pathPattern)
java.util.List<DeviceSchemaInfo>	getMatchedDevices(org.apache.iotdb.commons.path.PartialPath pathPattern, boolean isPrefixMatch)	Get all device matching the path pattern.
java.util.List<java.lang.String>	getStorageGroups()
boolean	isEmpty()
DeviceSchemaInfo	searchDeviceSchemaInfo(org.apache.iotdb.commons.path.PartialPath devicePath, java.util.List<java.lang.String> measurements)
org.apache.iotdb.tsfile.utils.Pair<java.util.List<MeasurementPath>,java.lang.Integer>	searchMeasurementPaths(org.apache.iotdb.commons.path.PartialPath pathPattern)
org.apache.iotdb.tsfile.utils.Pair<java.util.List<MeasurementPath>,java.lang.Integer>	searchMeasurementPaths(org.apache.iotdb.commons.path.PartialPath pathPattern, int slimit, int soffset, boolean isPrefixMatch)	Return all measurement paths for given path pattern and filter the result by slimit and offset.

Method Detail

searchMeasurementPaths

org.apache.iotdb.tsfile.utils.Pair<java.util.List<MeasurementPath>,java.lang.Integer> searchMeasurementPaths(org.apache.iotdb.commons.path.PartialPath pathPattern,
                                                                                                                   int slimit,
                                                                                                                   int soffset,
                                                                                                                   boolean isPrefixMatch)

Return all measurement paths for given path pattern and filter the result by slimit and offset.

Parameters:

pathPattern - can be a pattern or a full path of timeseries.

isPrefixMatch - if true, the path pattern is used to match prefix path

Returns:

Left: all measurement paths; Right: remaining series offset

searchMeasurementPaths

org.apache.iotdb.tsfile.utils.Pair<java.util.List<MeasurementPath>,java.lang.Integer> searchMeasurementPaths(org.apache.iotdb.commons.path.PartialPath pathPattern)

getAllMeasurement

java.util.List<MeasurementPath> getAllMeasurement()

getMatchedDevices

java.util.List<DeviceSchemaInfo> getMatchedDevices(org.apache.iotdb.commons.path.PartialPath pathPattern,
                                                   boolean isPrefixMatch)

Get all device matching the path pattern.

Parameters:

pathPattern - the pattern of the target devices.

Returns:

A HashSet instance which stores info of the devices matching the given path pattern.

getMatchedDevices

java.util.List<DeviceSchemaInfo> getMatchedDevices(org.apache.iotdb.commons.path.PartialPath pathPattern)

searchDeviceSchemaInfo

DeviceSchemaInfo searchDeviceSchemaInfo(org.apache.iotdb.commons.path.PartialPath devicePath,
                                        java.util.List<java.lang.String> measurements)

getBelongedStorageGroup

java.lang.String getBelongedStorageGroup(java.lang.String pathName)

Get storage group name by path

e.g., root.sg1 is a storage group and path = root.sg1.d1, return root.sg1

Parameters:

pathName - only full path, cannot be path pattern

Returns:

storage group in the given path

getBelongedStorageGroup

java.lang.String getBelongedStorageGroup(org.apache.iotdb.commons.path.PartialPath path)

getStorageGroups

java.util.List<java.lang.String> getStorageGroups()

isEmpty

boolean isEmpty()