Files
harbour-core/harbour/contrib/bmdbfcdx
Przemyslaw Czerpak b5d010fbeb 2007-10-01 19:42 UTC+0200 Przemyslaw Czerpak (druzus/at/priv.onet.pl)
* harbour/source/rtl/errorapi.c
    + added protection against possible GPF when some assign methods
      were called without parameters

  * harbour/source/rdd/workarea.c
    * initialize uiFalgs also when DBS_FLAGS is not set

  * harbour/contrib/bmdbfcdx/bmdbfcdx1.c
    * fixed hb_cdxSkipFilter() declaration - it should be 'static' function

  * harbour/source/pp/ppcore.c
  * harbour/source/compiler/ppcomp.c
    + added support for changing all -k? switches by #pragma, f.e.;
         #pragma -ks+
         #pragma -kM-
         #pragma -kx1
         #pragma -kJ0

  * harbour/source/compiler/hbusage.c
    * changed -ks description

  * harbour/include/hbexpra.c
  * harbour/include/hbexprb.c
    * do not generate error message for negative indexes and
      [] operators are used for simple types when -ks option
      is used

  * harbour/include/hbvmpub.h
  * harbour/include/hbapi.h
  * harbour/source/vm/hvm.c
  * harbour/source/vm/extend.c
  * harbour/source/vm/itemapi.c
  * harbour/source/vm/memvars.c
    + added HB_IT_DEFAULT flags - it allows to check if item was changed

  * harbour/source/vm/memvars.c
  * harbour/include/hbvm.h
    ! fixed HB_IT_MEMOFLAG updating to be Clipper compatible. Here we are
      not Clipper compatible in one place: in clodeblock local parameters
      with memo values are marked as MEMO but if you leave function where
      codeblock were created then Clipper during detaching removes MEMO
      flag. In Harbour memo flag is kept.

  * harbour/include/hbvm.h
  * harbour/source/vm/classes.c
  * harbour/source/vm/hvm.c
    % improved speed of extended references used for SETGET methods
      and overloaded [] operators

  * harbour/include/hbapi.h
  * harbour/include/hbsetup.ch
  * harbour/source/compiler/hbcomp.c
  * harbour/source/vm/hvm.c
  * harbour/source/vm/macro.c
  * harbour/source/vm/cmdarg.c
    * removed HB_COMPAT_XHB flags - only one HB_COMPAT_XHB still exist
      in HVM in hashes.c - it will be removed soon.

  * harbour/source/common/hbverdsp.c
    * removed information about xHarbour compatibility mode - it's not
      longer used. We are emulating xHarbour behavior using external
      XHB library and standard compiler/HVM features

  * harbour/contrib/xhb/xhb.ch
  * harbour/contrib/xhb/xhbfunc.c
  * harbour/source/vm/arrayshb.c
    * moved XHB_AINS(), XHB_ADEL() from XHB lib to HVM as HB_AINS(), HB_ADEL()

  * harbour/contrib/xhb/xhb.ch
    + added #pragma -ks+
    + added transaltion for hb_enumindex( <enumvar> )

  + harbour/contrib/xhb/xhbenum.c
    + added emulation for HB_EUMMINDEX()

  * harbour/contrib/xhb/xhbfunc.c
    * do not add INET*() function wrappers for DOS builds or when
      HB_NO_DEFAULT_INET macro is set

  * harbour/contrib/xhb/xhbmsgs.c
    * added comment

  * harbour/contrib/Makefile
    + added TIP and XHB

  * harbour/make_rpm.sh
  * harbour/harbour.spec
    * removed HB_COMPAT_XHB, --with tip, --with xhb
      they are not longer necessary
2007-10-01 17:43:52 +00:00
..

 BMDBFCDX RDD:
 ----------------------------------------------------------------------------

 Is a DBFCDX RDD compatible with clipper 5.3, use SET OPTIMIZE ON to make a
 static bitmap filters, with SET OPTIMIZE OFF works as harbour DBFCDX.

 Addons:

     BM_DbSeekWild( uKey, [lSoftSeek], [lFindLast], [lNext], [lAll] ) => .T./.F. or aSeekRec when lAll clause
     BM_Turbo( lOnOff ) // Is only recomendable to use it on creating FILTERS
     BM_DbGetFilterArray() => aFilterRec
     BM_DbSetFilterArray( aFilterRec )
     BM_DbSetFilterArrayAdd( aFilterRec )
     BM_DbSetFilterArrayDel( aFilterRec )

 Respecting command:

 SET OPTIMIZE
 Change the setting that determines whether to optimize using the open orders
 when processing a filtered database file
------------------------------------------------------------------------------
 Syntax

     SET OPTIMIZE ON | OFF | (<lToggle>)

 Arguments

     ON enables optimization.

     OFF disables optimization.

     <lToggle> is a logical expression that must be enclosed in
     parentheses.  A value of true (.T.) is the same as ON, and a value of
     false (.F.) is the same as OFF.

     Note:  The initial default of this setting depends on the RDD.

 Description

     For RDDs that support optimization, such as DBFCDX, SET OPTIMIZE
     determines whether to optimize filters based on the orders open in the
     current work area.  If this flag is ON, the RDD will optimize the search
     for records that meet the filter condition to the fullest extent
     possible, minimizing the need to read the actual data from the database
     file.

     If this flag is OFF, the RDD will not optimize.

 Examples

     ¦  The following example enables optimization for the Inventor
        database file using the SET OPTIMIZE command:

        USE Inventor NEW VIA "DBFCDX"
        SET OPTIMIZE ON