A set of parameters for GPUdb::filterBySeries. More…
#include <gpudb/protocol/filter_by_series.h>
Public Member Functions | |
| FilterBySeriesRequest () | |
| Constructs a FilterBySeriesRequest object with default parameters. | |
| FilterBySeriesRequest (const std::string &tableName_, const std::string &viewName_, const std::string &trackId_, const std::vector< std::string > &targetTrackIds_, const std::map< std::string, std::string > &options_) | |
| Constructs a FilterBySeriesRequest object with the specified parameters. | |
Public Attributes | |
| std::string | tableName |
| Name of the table on which the filter by track operation will be performed, in [ schema_name. ]table_name format, using standard name resolution rules. | |
| std::string | viewName |
| If provided, then this will be the name of the view containing the results, in [ schema_name. ]view_name format, using standard name resolution rules and meeting table naming criteria. | |
| std::string | trackId |
| The ID of the track which will act as the filtering points. | |
| std::vector< std::string > | targetTrackIds |
| Up to one track ID to intersect with the “filter” track. | |
| std::map< std::string, std::string > | options |
| Optional parameters. | |
Detailed Description
A set of parameters for GPUdb::filterBySeries.
Filters objects matching all points of the given track (works only on track type data). It allows users to specify a particular track to find all other points in the table that fall within specified ranges (spatial and temporal) of all points of the given track. Additionally, the user can specify another track to see if the two intersect (or go close to each other within the specified ranges). The user also has the flexibility of using different metrics for the spatial distance calculation: Euclidean (flat geometry) or Great Circle (spherical geometry to approximate the Earth’s surface distances). The filtered points are stored in a newly created result set. The return value of the function is the number of points in the resultant set (view).
This operation is synchronous, meaning that a response will not be returned until all the objects are fully available.
Definition at line 31 of file filter_by_series.h.
Constructor & Destructor Documentation
◆ FilterBySeriesRequest() [1/2]
| inline |
Constructs a FilterBySeriesRequest object with default parameters.
Definition at line 36 of file filter_by_series.h.
◆ FilterBySeriesRequest() [2/2]
| inline |
Constructs a FilterBySeriesRequest object with the specified parameters.
| [in] | tableName_ | Name of the table on which the filter by track operation will be performed, in [schema_name.]table_name format, using standard name resolution rules. Must be a currently existing table with a track present. |
| [in] | viewName_ | If provided, then this will be the name of the view containing the results, in [schema_name.]view_name format, using standard name resolution rules and meeting table naming criteria. Must not be an already existing table or view. The default value is ”. |
| [in] | trackId_ | The ID of the track which will act as the filtering points. Must be an existing track within the given table. |
| [in] | targetTrackIds_ | Up to one track ID to intersect with the “filter” track. If any provided, it must be an valid track ID within the given set. |
| [in] | options_ | Optional parameters.
|
Definition at line 156 of file filter_by_series.h.
Member Data Documentation
◆ options
| std::map<std::string, std::string> gpudb::FilterBySeriesRequest::options |
Optional parameters.
- filter_by_series_create_temp_table: If true, a unique temporary table name will be generated in the sys_temp schema and used in place of viewName. This is always allowed even if the caller does not have permission to create tables. The generated name is returned in qualified_view_name. Supported values:The default value is filter_by_series_false.
- filter_by_series_collection_name: [DEPRECATED–please specify the containing schema for the view as part of viewName and use GPUdb::createSchema to create the schema if non-existent] Name of a schema for the newly created view. If the schema is non-existent, it will be automatically created.
- filter_by_series_spatial_radius: A positive number passed as a string representing the radius of the search area centered around each track point’s geospatial coordinates. The value is interpreted in meters. Required parameter. The minimum allowed value is ‘0’.
- filter_by_series_time_radius: A positive number passed as a string representing the maximum allowable time difference between the timestamps of a filtered object and the given track’s points. The value is interpreted in seconds. Required parameter. The minimum allowed value is ‘0’.
- filter_by_series_spatial_distance_metric: A string representing the coordinate system to use for the spatial search criteria. Acceptable values are ‘euclidean’ and ‘great_circle’. Optional parameter; default is ‘euclidean’. Supported values:
The default value is an empty map.
Definition at line 254 of file filter_by_series.h.
◆ tableName
| std::string gpudb::FilterBySeriesRequest::tableName |
Name of the table on which the filter by track operation will be performed, in [ schema_name. ]table_name format, using standard name resolution rules.
Must be a currently existing table with a track present.
Definition at line 173 of file filter_by_series.h.
◆ targetTrackIds
| std::vector<std::string> gpudb::FilterBySeriesRequest::targetTrackIds |
Up to one track ID to intersect with the “filter” track.
If any provided, it must be an valid track ID within the given set.
Definition at line 196 of file filter_by_series.h.
◆ trackId
| std::string gpudb::FilterBySeriesRequest::trackId |
The ID of the track which will act as the filtering points.
Must be an existing track within the given table.
Definition at line 190 of file filter_by_series.h.
◆ viewName
| std::string gpudb::FilterBySeriesRequest::viewName |
If provided, then this will be the name of the view containing the results, in [ schema_name. ]view_name format, using standard name resolution rules and meeting table naming criteria.
Must not be an already existing table or view. The default value is ”.
Definition at line 184 of file filter_by_series.h.
The documentation for this struct was generated from the following file:
- gpudb/protocol/filter_by_series.h