b8b5e032be
* harbour/bin/hb-func.sh
* harbour/config/global.cf
+ harbour/include/usrrdd.ch
+ harbour/source/rdd/usrrdd/Makefile
+ harbour/source/rdd/usrrdd/usrrdd.c
+ harbour/source/rdd/usrrdd/rdds/Makefile
+ added USRRDD library. It allows to create new RDD from scratch
or by inheriting from any other RDDs (except USRRDDs) and overloading
any of their methods at .prg level.
I hope you will find a lot of fun in creating your own RDDs.
I wanted to create more examples and added some documentation
but I do not have time for it now - sorry. Try to look at examples
below and if you need some more detail information then look at
Clipper's NG Technical Reference Guide or ask me. I'll try to help.
Two RDDs which seems to be requested by users are ARRAY RDD and
OLE RDD. I hope that some of you implement them.
+ harbour/source/rdd/usrrdd/rdds/dbtcdx.prg
* Very simple RDD DBTCDX which inherits from DBFCDX and
set default memo type to DBT, see exmemo.prg as an example.
+ harbour/source/rdd/usrrdd/rdds/fptcdx.prg
* Very simple RDD FPTCDX which inherits from DBFCDX and
set default memo type to FPT, see exmemo.prg as an example.
+ harbour/source/rdd/usrrdd/rdds/smtcdx.prg
* Very simple RDD SMTCDX which inherits from DBFCDX and
set default memo type to SMT, see exmemo.prg as an example.
+ harbour/source/rdd/usrrdd/rdds/fcomma.prg
* A simple RDD which uses HB_F*() functions from MISC library
to access CSV files. It allow to open an CSV file and navigate
using SKIP()/GOTO()/GOTOP()/GOBOTTOM() functions using
BOF()/EOF()/RECNO()/LASTREC() to check current state.
HB_F*() functions does not support single field access and allow
to read only the whole line. This RDD also. I only added one
virtual field which exist in all tables open by this RDD called
LINE which contains the current .csv file line.
+ harbour/source/rdd/usrrdd/rdds/hscdx.prg
* A simple RDD which adds automatically update HSX indexes to DBFCDX
To create new HSX index for current work area use: HSX_CREATE()
To open already existing one use HSX_OPEN(),
To close use: HSX_CLOSE()
To retieve an handle use: HSX_HANDLE()
+ harbour/source/rdd/usrrdd/rdds/rlcdx.prg
* A simple RDD which introduce lock counters. It has full DBFCDX
functionality from which it inherits but if you execute DBRLOCK(100)
twice then you will have to also repeat call to DBRUNLOCK(100) to
really unlock the record 100. The same if for FLOCK()
This idea comes from one of messages sent by Mindaugas Kavaliauskas.
+ harbour/source/rdd/usrrdd/example/exfcm.prg
* example of using FCOMMA RDD
+ harbour/source/rdd/usrrdd/example/exhsx.prg
* example of using HSCDX RDD
+ harbour/source/rdd/usrrdd/example/exrlx.prg
* example of using RLCDX RDD
+ harbour/source/rdd/usrrdd/example/exmemo.prg
* example of using DBTCDX, FPTCDX and SMTCDX RDDs