DtDbLoad(library call) DtDbLoad(library call)
NAMEDtDbLoad — load actions and data types database
The DtDbLoad function loads the actions and data types database into
the application. When the function returns, the database has been
An environment variable determines the set of directories to be
searched. The DtDbLoad function loads all actions and data types
defined in files with a .dt suffix located in these directories.
The directory search path is based on the value of the DTDATABAS‐
ESEARCHPATH environment variable and internal defaults. DTDATABAS‐
ESEARCHPATH contains a comma-separated list of directories in
[host:]/path format. The application must call DtDbLoad before calling
any of the routines that query either the action or data type data‐
bases. If called multiple times, the old databases are freed before
the new ones are created.
The DtDbLoad function returns no value.
If this function is used in a long-lived application, the application
must dynamically reload the databases when they are modified. To do
this, the client must register to receive notification whenever the
actions and data types database needs to be modified. It is up to the
application to recall DtDbLoad after receiving notification. This is
done with a call to DtDbReloadNotify(3).
If errors are encountered when reading the database files, error mes‐
sages are written to the user's errorlog file ($HOME/.dt/errorlog).
Records containing errors are not incorporated into the internal data‐
Dt/Action.h - DtAction(5), DtDbReloadNotify(3), dtdtfile(4).