- IF_ABAP_DB_BLOB_HANDLE and
which both include the superordinate interface
which then also includes the interface IF_ABAP_CLOSE_RESOURCE.
The connection to streams and locators is as follows:
- The system classes CL_ABAP_DB_C_READER and CL_ABAP_DB_C_LOCATOR both implement the interface IF_ABAP_DB_CLOB_HANDLE.
- The system classes CL_ABAP_DB_X_READER and CL_ABAP_DB_X_LOCATOR both implement the interface IF_ABAP_DB_BLOB_HANDLE.
- The interface IF_ABAP_DB_READER includes IF_ABAP_DB_LOB_HANDLE.
The instances of the system classes that implement the interface IF_ABAP_DB_LOB_HANDLE are called LOB handles.
The LOB interfaces shown here can only be used for reads. Reference variables for LOB handles that are
specified as read targets of the
clause in the
can be typed statically using these interfaces. The class used to create the object must then be specified
using the special addition
in the statement
SELECT. For writes with the statements
MODIFY, the reference variables which are used as a source must be typed using the classes for writer streams or locators.