Package org.apache.iotdb.session.pool

Class SessionPool

java.lang.Object

org.apache.iotdb.session.pool.SessionPool

public class SessionPool
extends java.lang.Object

SessionPool is a wrapper of a Session Set. Using SessionPool, the user do not need to consider how to reuse a session connection. Even if the session is disconnected, the session pool can recognize it and remove the broken session connection and create a new one.

If there is no available connections and the pool reaches its max size, the all methods will hang until there is a available connection.

If a user has waited for a session for more than 60 seconds, a warn log will be printed.

The only thing you have to remember is that:

For a query, if you have get all data, i.e., SessionDataSetWrapper.hasNext() == false, it is ok. Otherwise, i.e., you want to stop the query before you get all data (SessionDataSetWrapper.hasNext() == true), then you have to call closeResultSet(SessionDataSetWrapper wrapper) manually. Otherwise the connection is occupied by the query.

Another case that you have to manually call closeResultSet() is that when there is exception when you call SessionDataSetWrapper.hasNext() or next()

Field Summary

Fields

Modifier and Type	Field	Description
static java.lang.String	CLOSE_THE_SESSION_FAILED
static java.lang.String	SESSION_POOL_IS_CLOSED

Constructor Summary

Constructors

Constructor	Description
SessionPool(java.lang.String ip, int port, java.lang.String user, java.lang.String password, int maxSize)
SessionPool(java.lang.String ip, int port, java.lang.String user, java.lang.String password, int maxSize, boolean enableCompression)
SessionPool(java.lang.String ip, int port, java.lang.String user, java.lang.String password, int maxSize, boolean enableCompression, boolean enableCacheLeader)
SessionPool(java.lang.String ip, int port, java.lang.String user, java.lang.String password, int maxSize, int fetchSize, long waitToGetSessionTimeoutInMs, boolean enableCompression, java.time.ZoneId zoneId, boolean enableCacheLeader, int connectionTimeoutInMs)
SessionPool(java.lang.String ip, int port, java.lang.String user, java.lang.String password, int maxSize, java.time.ZoneId zoneId)

Method Summary

Modifier and Type	Method	Description
boolean	checkTimeseriesExists(java.lang.String path)
void	close()	close all connections in the pool
void	closeResultSet(SessionDataSetWrapper wrapper)
void	createMultiTimeseries(java.util.List<java.lang.String> paths, java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType> dataTypes, java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSEncoding> encodings, java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.CompressionType> compressors, java.util.List<java.util.Map<java.lang.String,java.lang.String>> propsList, java.util.List<java.util.Map<java.lang.String,java.lang.String>> tagsList, java.util.List<java.util.Map<java.lang.String,java.lang.String>> attributesList, java.util.List<java.lang.String> measurementAliasList)
void	createTimeseries(java.lang.String path, org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType, org.apache.iotdb.tsfile.file.metadata.enums.TSEncoding encoding, org.apache.iotdb.tsfile.file.metadata.enums.CompressionType compressor)
void	createTimeseries(java.lang.String path, org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType, org.apache.iotdb.tsfile.file.metadata.enums.TSEncoding encoding, org.apache.iotdb.tsfile.file.metadata.enums.CompressionType compressor, java.util.Map<java.lang.String,java.lang.String> props, java.util.Map<java.lang.String,java.lang.String> tags, java.util.Map<java.lang.String,java.lang.String> attributes, java.lang.String measurementAlias)
int	currentAvailableSize()
int	currentOccupiedSize()
void	deleteData(java.lang.String path, long time)	delete data <= time in one timeseries
void	deleteData(java.util.List<java.lang.String> paths, long time)	delete data <= time in multiple timeseries
void	deleteData(java.util.List<java.lang.String> paths, long startTime, long endTime)	delete data >= startTime and data <= endTime in multiple timeseries
void	deleteStorageGroup(java.lang.String storageGroup)
void	deleteStorageGroups(java.util.List<java.lang.String> storageGroup)
void	deleteTimeseries(java.lang.String path)	delete a timeseries, including data and schema
void	deleteTimeseries(java.util.List<java.lang.String> paths)	delete a timeseries, including data and schema
void	executeNonQueryStatement(java.lang.String sql)	execute non query statement
SessionDataSetWrapper	executeQueryStatement(java.lang.String sql)	execure query sql users must call closeResultSet(SessionDataSetWrapper) if they do not use the SessionDataSet any more.
SessionDataSetWrapper	executeRawDataQuery(java.util.List<java.lang.String> paths, long startTime, long endTime)
void	insertOneDeviceRecords(java.lang.String deviceId, java.util.List<java.lang.Long> times, java.util.List<java.util.List<java.lang.String>> measurementsList, java.util.List<java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType>> typesList, java.util.List<java.util.List<java.lang.Object>> valuesList)	Insert data that belong to the same device in batch format, which can reduce the overhead of network.
void	insertOneDeviceRecords(java.lang.String deviceId, java.util.List<java.lang.Long> times, java.util.List<java.util.List<java.lang.String>> measurementsList, java.util.List<java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType>> typesList, java.util.List<java.util.List<java.lang.Object>> valuesList, boolean haveSorted)	Insert data that belong to the same device in batch format, which can reduce the overhead of network.
void	insertRecord(java.lang.String deviceId, long time, java.util.List<java.lang.String> measurements, java.util.List<java.lang.String> values)	insert data in one row, if you want improve your performance, please use insertRecords method or insertTablet method
void	insertRecord(java.lang.String deviceId, long time, java.util.List<java.lang.String> measurements, java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType> types, java.util.List<java.lang.Object> values)	insert data in one row, if you want improve your performance, please use insertRecords method or insertTablet method
void	insertRecords(java.util.List<java.lang.String> deviceIds, java.util.List<java.lang.Long> times, java.util.List<java.util.List<java.lang.String>> measurementsList, java.util.List<java.util.List<java.lang.String>> valuesList)	Insert data in batch format, which can reduce the overhead of network.
void	insertRecords(java.util.List<java.lang.String> deviceIds, java.util.List<java.lang.Long> times, java.util.List<java.util.List<java.lang.String>> measurementsList, java.util.List<java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType>> typesList, java.util.List<java.util.List<java.lang.Object>> valuesList)	Insert data in batch format, which can reduce the overhead of network.
void	insertTablet(org.apache.iotdb.tsfile.write.record.Tablet tablet)	insert the data of a device.
void	insertTablet(org.apache.iotdb.tsfile.write.record.Tablet tablet, boolean sorted)	insert the data of a device.
void	insertTablets(java.util.Map<java.lang.String,org.apache.iotdb.tsfile.write.record.Tablet> tablets)	use batch interface to insert data
void	insertTablets(java.util.Map<java.lang.String,org.apache.iotdb.tsfile.write.record.Tablet> tablets, boolean sorted)	use batch interface to insert data
void	setStorageGroup(java.lang.String storageGroupId)
void	testInsertRecord(java.lang.String deviceId, long time, java.util.List<java.lang.String> measurements, java.util.List<java.lang.String> values)	This method NOT insert data into database and the server just return after accept the request, this method should be used to test other time cost in client
void	testInsertRecord(java.lang.String deviceId, long time, java.util.List<java.lang.String> measurements, java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType> types, java.util.List<java.lang.Object> values)	This method NOT insert data into database and the server just return after accept the request, this method should be used to test other time cost in client
void	testInsertRecords(java.util.List<java.lang.String> deviceIds, java.util.List<java.lang.Long> times, java.util.List<java.util.List<java.lang.String>> measurementsList, java.util.List<java.util.List<java.lang.String>> valuesList)	This method NOT insert data into database and the server just return after accept the request, this method should be used to test other time cost in client
void	testInsertRecords(java.util.List<java.lang.String> deviceIds, java.util.List<java.lang.Long> times, java.util.List<java.util.List<java.lang.String>> measurementsList, java.util.List<java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType>> typesList, java.util.List<java.util.List<java.lang.Object>> valuesList)	This method NOT insert data into database and the server just return after accept the request, this method should be used to test other time cost in client
void	testInsertTablet(org.apache.iotdb.tsfile.write.record.Tablet tablet)	This method NOT insert data into database and the server just return after accept the request, this method should be used to test other time cost in client
void	testInsertTablets(java.util.Map<java.lang.String,org.apache.iotdb.tsfile.write.record.Tablet> tablets)	This method NOT insert data into database and the server just return after accept the request, this method should be used to test other time cost in client

Methods inherited from class java.lang.Object

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

Field Detail

SESSION_POOL_IS_CLOSED

public static final java.lang.String SESSION_POOL_IS_CLOSED

See Also:

Constant Field Values

CLOSE_THE_SESSION_FAILED

public static final java.lang.String CLOSE_THE_SESSION_FAILED

See Also:

Constant Field Values

Constructor Detail

SessionPool

public SessionPool(java.lang.String ip,
                   int port,
                   java.lang.String user,
                   java.lang.String password,
                   int maxSize)

SessionPool

public SessionPool(java.lang.String ip,
                   int port,
                   java.lang.String user,
                   java.lang.String password,
                   int maxSize,
                   boolean enableCompression)

SessionPool

public SessionPool(java.lang.String ip,
                   int port,
                   java.lang.String user,
                   java.lang.String password,
                   int maxSize,
                   boolean enableCompression,
                   boolean enableCacheLeader)

SessionPool

public SessionPool(java.lang.String ip,
                   int port,
                   java.lang.String user,
                   java.lang.String password,
                   int maxSize,
                   java.time.ZoneId zoneId)

SessionPool

public SessionPool(java.lang.String ip,
                   int port,
                   java.lang.String user,
                   java.lang.String password,
                   int maxSize,
                   int fetchSize,
                   long waitToGetSessionTimeoutInMs,
                   boolean enableCompression,
                   java.time.ZoneId zoneId,
                   boolean enableCacheLeader,
                   int connectionTimeoutInMs)

Method Detail

currentAvailableSize

public int currentAvailableSize()

currentOccupiedSize

public int currentOccupiedSize()

close

public void close()

close all connections in the pool

closeResultSet

public void closeResultSet(SessionDataSetWrapper wrapper)

insertTablet

public void insertTablet(org.apache.iotdb.tsfile.write.record.Tablet tablet)
                  throws org.apache.iotdb.rpc.IoTDBConnectionException,
                         org.apache.iotdb.rpc.StatementExecutionException

insert the data of a device. For each timestamp, the number of measurements is the same.

Parameters:

tablet - data batch

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

insertTablet

public void insertTablet(org.apache.iotdb.tsfile.write.record.Tablet tablet,
                         boolean sorted)
                  throws org.apache.iotdb.rpc.IoTDBConnectionException,
                         org.apache.iotdb.rpc.StatementExecutionException

insert the data of a device. For each timestamp, the number of measurements is the same.

Users need to control the count of Tablet and write a batch when it reaches the maxBatchSize

Parameters:

tablet - a tablet data of one device

sorted - whether times in Tablet are in ascending order

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

insertTablets

public void insertTablets(java.util.Map<java.lang.String,org.apache.iotdb.tsfile.write.record.Tablet> tablets)
                   throws org.apache.iotdb.rpc.IoTDBConnectionException,
                          org.apache.iotdb.rpc.StatementExecutionException

use batch interface to insert data

Parameters:

tablets - multiple batch

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

insertTablets

public void insertTablets(java.util.Map<java.lang.String,org.apache.iotdb.tsfile.write.record.Tablet> tablets,
                          boolean sorted)
                   throws org.apache.iotdb.rpc.IoTDBConnectionException,
                          org.apache.iotdb.rpc.StatementExecutionException

use batch interface to insert data

Parameters:

tablets - multiple batch

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

insertRecords

public void insertRecords(java.util.List<java.lang.String> deviceIds,
                          java.util.List<java.lang.Long> times,
                          java.util.List<java.util.List<java.lang.String>> measurementsList,
                          java.util.List<java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType>> typesList,
                          java.util.List<java.util.List<java.lang.Object>> valuesList)
                   throws org.apache.iotdb.rpc.IoTDBConnectionException,
                          org.apache.iotdb.rpc.StatementExecutionException

Insert data in batch format, which can reduce the overhead of network. This method is just like jdbc batch insert, we pack some insert request in batch and send them to server If you want improve your performance, please see insertTablet method

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

See Also:

Session.insertTablet(Tablet)

insertOneDeviceRecords

public void insertOneDeviceRecords(java.lang.String deviceId,
                                   java.util.List<java.lang.Long> times,
                                   java.util.List<java.util.List<java.lang.String>> measurementsList,
                                   java.util.List<java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType>> typesList,
                                   java.util.List<java.util.List<java.lang.Object>> valuesList)
                            throws org.apache.iotdb.rpc.IoTDBConnectionException,
                                   org.apache.iotdb.rpc.StatementExecutionException

Insert data that belong to the same device in batch format, which can reduce the overhead of network. This method is just like jdbc batch insert, we pack some insert request in batch and send them to server If you want improve your performance, please see insertTablet method

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

See Also:

Session.insertTablet(Tablet)

insertOneDeviceRecords

public void insertOneDeviceRecords(java.lang.String deviceId,
                                   java.util.List<java.lang.Long> times,
                                   java.util.List<java.util.List<java.lang.String>> measurementsList,
                                   java.util.List<java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType>> typesList,
                                   java.util.List<java.util.List<java.lang.Object>> valuesList,
                                   boolean haveSorted)
                            throws org.apache.iotdb.rpc.IoTDBConnectionException,
                                   org.apache.iotdb.rpc.StatementExecutionException

Insert data that belong to the same device in batch format, which can reduce the overhead of network. This method is just like jdbc batch insert, we pack some insert request in batch and send them to server If you want improve your performance, please see insertTablet method

Parameters:

haveSorted - whether the times list has been ordered.

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

See Also:

Session.insertTablet(Tablet)

insertRecords

public void insertRecords(java.util.List<java.lang.String> deviceIds,
                          java.util.List<java.lang.Long> times,
                          java.util.List<java.util.List<java.lang.String>> measurementsList,
                          java.util.List<java.util.List<java.lang.String>> valuesList)
                   throws org.apache.iotdb.rpc.IoTDBConnectionException,
                          org.apache.iotdb.rpc.StatementExecutionException

Insert data in batch format, which can reduce the overhead of network. This method is just like jdbc batch insert, we pack some insert request in batch and send them to server If you want improve your performance, please see insertTablet method

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

See Also:

Session.insertTablet(Tablet)

insertRecord

public void insertRecord(java.lang.String deviceId,
                         long time,
                         java.util.List<java.lang.String> measurements,
                         java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType> types,
                         java.util.List<java.lang.Object> values)
                  throws org.apache.iotdb.rpc.IoTDBConnectionException,
                         org.apache.iotdb.rpc.StatementExecutionException

insert data in one row, if you want improve your performance, please use insertRecords method or insertTablet method

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

See Also:

Session.insertRecords(List, List, List, List, List), Session.insertTablet(Tablet)

insertRecord

public void insertRecord(java.lang.String deviceId,
                         long time,
                         java.util.List<java.lang.String> measurements,
                         java.util.List<java.lang.String> values)
                  throws org.apache.iotdb.rpc.IoTDBConnectionException,
                         org.apache.iotdb.rpc.StatementExecutionException

insert data in one row, if you want improve your performance, please use insertRecords method or insertTablet method

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

See Also:

Session.insertRecords(List, List, List, List, List), Session.insertTablet(Tablet)

testInsertTablet

public void testInsertTablet(org.apache.iotdb.tsfile.write.record.Tablet tablet)
                      throws org.apache.iotdb.rpc.IoTDBConnectionException,
                             org.apache.iotdb.rpc.StatementExecutionException

This method NOT insert data into database and the server just return after accept the request, this method should be used to test other time cost in client

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

testInsertTablets

public void testInsertTablets(java.util.Map<java.lang.String,org.apache.iotdb.tsfile.write.record.Tablet> tablets)
                       throws org.apache.iotdb.rpc.IoTDBConnectionException,
                              org.apache.iotdb.rpc.StatementExecutionException

This method NOT insert data into database and the server just return after accept the request, this method should be used to test other time cost in client

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

testInsertRecords

public void testInsertRecords(java.util.List<java.lang.String> deviceIds,
                              java.util.List<java.lang.Long> times,
                              java.util.List<java.util.List<java.lang.String>> measurementsList,
                              java.util.List<java.util.List<java.lang.String>> valuesList)
                       throws org.apache.iotdb.rpc.IoTDBConnectionException,
                              org.apache.iotdb.rpc.StatementExecutionException

This method NOT insert data into database and the server just return after accept the request, this method should be used to test other time cost in client

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

testInsertRecords

public void testInsertRecords(java.util.List<java.lang.String> deviceIds,
                              java.util.List<java.lang.Long> times,
                              java.util.List<java.util.List<java.lang.String>> measurementsList,
                              java.util.List<java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType>> typesList,
                              java.util.List<java.util.List<java.lang.Object>> valuesList)
                       throws org.apache.iotdb.rpc.IoTDBConnectionException,
                              org.apache.iotdb.rpc.StatementExecutionException

This method NOT insert data into database and the server just return after accept the request, this method should be used to test other time cost in client

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

testInsertRecord

public void testInsertRecord(java.lang.String deviceId,
                             long time,
                             java.util.List<java.lang.String> measurements,
                             java.util.List<java.lang.String> values)
                      throws org.apache.iotdb.rpc.IoTDBConnectionException,
                             org.apache.iotdb.rpc.StatementExecutionException

This method NOT insert data into database and the server just return after accept the request, this method should be used to test other time cost in client

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

testInsertRecord

public void testInsertRecord(java.lang.String deviceId,
                             long time,
                             java.util.List<java.lang.String> measurements,
                             java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType> types,
                             java.util.List<java.lang.Object> values)
                      throws org.apache.iotdb.rpc.IoTDBConnectionException,
                             org.apache.iotdb.rpc.StatementExecutionException

This method NOT insert data into database and the server just return after accept the request, this method should be used to test other time cost in client

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

deleteTimeseries

public void deleteTimeseries(java.lang.String path)
                      throws org.apache.iotdb.rpc.IoTDBConnectionException,
                             org.apache.iotdb.rpc.StatementExecutionException

delete a timeseries, including data and schema

Parameters:

path - timeseries to delete, should be a whole path

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

deleteTimeseries

public void deleteTimeseries(java.util.List<java.lang.String> paths)
                      throws org.apache.iotdb.rpc.IoTDBConnectionException,
                             org.apache.iotdb.rpc.StatementExecutionException

delete a timeseries, including data and schema

Parameters:

paths - timeseries to delete, should be a whole path

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

deleteData

public void deleteData(java.lang.String path,
                       long time)
                throws org.apache.iotdb.rpc.IoTDBConnectionException,
                       org.apache.iotdb.rpc.StatementExecutionException

delete data <= time in one timeseries

Parameters:

path - data in which time series to delete

time - data with time stamp less than or equal to time will be deleted

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

deleteData

public void deleteData(java.util.List<java.lang.String> paths,
                       long time)
                throws org.apache.iotdb.rpc.IoTDBConnectionException,
                       org.apache.iotdb.rpc.StatementExecutionException

delete data <= time in multiple timeseries

Parameters:

paths - data in which time series to delete

time - data with time stamp less than or equal to time will be deleted

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

deleteData

public void deleteData(java.util.List<java.lang.String> paths,
                       long startTime,
                       long endTime)
                throws org.apache.iotdb.rpc.IoTDBConnectionException,
                       org.apache.iotdb.rpc.StatementExecutionException

delete data >= startTime and data <= endTime in multiple timeseries

Parameters:

paths - data in which time series to delete

startTime - delete range start time

endTime - delete range end time

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

setStorageGroup

public void setStorageGroup(java.lang.String storageGroupId)
                     throws org.apache.iotdb.rpc.IoTDBConnectionException,
                            org.apache.iotdb.rpc.StatementExecutionException

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

deleteStorageGroup

public void deleteStorageGroup(java.lang.String storageGroup)
                        throws org.apache.iotdb.rpc.IoTDBConnectionException,
                               org.apache.iotdb.rpc.StatementExecutionException

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

deleteStorageGroups

public void deleteStorageGroups(java.util.List<java.lang.String> storageGroup)
                         throws org.apache.iotdb.rpc.IoTDBConnectionException,
                                org.apache.iotdb.rpc.StatementExecutionException

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

createTimeseries

public void createTimeseries(java.lang.String path,
                             org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType,
                             org.apache.iotdb.tsfile.file.metadata.enums.TSEncoding encoding,
                             org.apache.iotdb.tsfile.file.metadata.enums.CompressionType compressor)
                      throws org.apache.iotdb.rpc.IoTDBConnectionException,
                             org.apache.iotdb.rpc.StatementExecutionException

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

createTimeseries

public void createTimeseries(java.lang.String path,
                             org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType,
                             org.apache.iotdb.tsfile.file.metadata.enums.TSEncoding encoding,
                             org.apache.iotdb.tsfile.file.metadata.enums.CompressionType compressor,
                             java.util.Map<java.lang.String,java.lang.String> props,
                             java.util.Map<java.lang.String,java.lang.String> tags,
                             java.util.Map<java.lang.String,java.lang.String> attributes,
                             java.lang.String measurementAlias)
                      throws org.apache.iotdb.rpc.IoTDBConnectionException,
                             org.apache.iotdb.rpc.StatementExecutionException

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

createMultiTimeseries

public void createMultiTimeseries(java.util.List<java.lang.String> paths,
                                  java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType> dataTypes,
                                  java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSEncoding> encodings,
                                  java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.CompressionType> compressors,
                                  java.util.List<java.util.Map<java.lang.String,java.lang.String>> propsList,
                                  java.util.List<java.util.Map<java.lang.String,java.lang.String>> tagsList,
                                  java.util.List<java.util.Map<java.lang.String,java.lang.String>> attributesList,
                                  java.util.List<java.lang.String> measurementAliasList)
                           throws org.apache.iotdb.rpc.IoTDBConnectionException,
                                  org.apache.iotdb.rpc.StatementExecutionException

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

checkTimeseriesExists

public boolean checkTimeseriesExists(java.lang.String path)
                              throws org.apache.iotdb.rpc.IoTDBConnectionException,
                                     org.apache.iotdb.rpc.StatementExecutionException

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

executeQueryStatement

public SessionDataSetWrapper executeQueryStatement(java.lang.String sql)
                                            throws org.apache.iotdb.rpc.IoTDBConnectionException,
                                                   org.apache.iotdb.rpc.StatementExecutionException

execure query sql users must call closeResultSet(SessionDataSetWrapper) if they do not use the SessionDataSet any more. users do not need to call sessionDataSet.closeOpeationHandler() any more.

Parameters:

sql - query statement

Returns:

result set Notice that you must get the result instance. Otherwise a data leakage will happen

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException

executeNonQueryStatement

public void executeNonQueryStatement(java.lang.String sql)
                              throws org.apache.iotdb.rpc.StatementExecutionException,
                                     org.apache.iotdb.rpc.IoTDBConnectionException

execute non query statement

Parameters:

sql - non query statement

Throws:

org.apache.iotdb.rpc.StatementExecutionException

org.apache.iotdb.rpc.IoTDBConnectionException

executeRawDataQuery

public SessionDataSetWrapper executeRawDataQuery(java.util.List<java.lang.String> paths,
                                                 long startTime,
                                                 long endTime)
                                          throws org.apache.iotdb.rpc.IoTDBConnectionException,
                                                 org.apache.iotdb.rpc.StatementExecutionException

Throws:

org.apache.iotdb.rpc.IoTDBConnectionException

org.apache.iotdb.rpc.StatementExecutionException