/FRE/DB_CL_TS_CDM_COMPRESS - Generic Storage of Time Series in BLOBs

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Functionality

The public class methods MODIFY_DB_FROM_DATA, DELETE_DB_FROM_DATA and READ_DATA_FROM_DB of the class/FRE/DB_CL_TS_COMPRESS are called by handlers that need to process large internal tables in the database in a compressed manner.

Each of the interfaces of the write-method, delete-method and the read-method is generic; that is, at runtime the types of the imported parameters are specified.

Due to the generic approach, at runtime the caller can specify the type of the table to be saved andthe structures containing its header key and attribute fields. If suitable, the caller can also differentiate the database tables using a generic splitting structure.

Relationships

Example

If a caller is of class /FRE/DB_CL_TS_CDM, that class handles the planning data.

Notes

• The table parameter defines the database table in which the datasets are saved.

• If the table parameter structure or the table parameter value changes between two calls of the write-method, a new table is defined.

• If the key parameter structure changes between an initial call of the write-method and one or more consecutive calls of the read-method, errors occur each time.

• The attribute parameters must have the same type as in the first call of the method MODIFY_DB_FROM_DATAwithin all consecutive calls of the write-method and the read-method, otherwise an exception is raised. The values, however, can differ.

Further information

PERFORM Short Reference   Vendor Master (General Section)  
This documentation is copyright by SAP AG.


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