Actually implement the new procedure code and adapt all of its clients

[pspp-builds.git] / src / data / ChangeLog

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+2007-06-06  Ben Pfaff  <blp@gnu.org>
+
+       Actually implement the new procedure code and adapt all of its
+       clients to match.  Also adapt all of the other case sources and
+       sinks in the tree and their clients to use the
+       casereader/casewriter infrastructure.
+
+       * automake.mk: Add and remove files.
+
+       * any-reader.c: Change into a casereader.
+       * por-file-reader.c: Ditto.
+       * scratch-reader.c: Ditto.
+       * sys-file-reader.c: Ditto.
+
+       * any-writer.c: Change into a casewriter.
+       * por-file-writer.c: Ditto.
+       * scratch-writer.c: Ditto.
+       * sys-file-writer.c: Ditto.
+
+       * procedure.c: Change to use casereader, casewriter, caseinit, and
+       other new infrastructure.
+
+       * scratch-handle.c: Adapt to new infrastructure.
+
+       * case-sink.c: Removed, now dead code.
+       * case-sink.h: Ditto.
+       * case-source.c: Ditto.
+       * case-source.h: Ditto.
+       * casefile-factory.c: Ditto.
+       * casefile-private.h: Ditto.
+       * casefile.c: Ditto.
+       * casefile.h: Ditto.
+       * casefilter.c: Ditto.
+       * casefilter.h: Ditto.
+       * fastfile.c: Ditto.
+       * fastfile.h: Ditto.
+       * fastfile-factory.c: Ditto.
+       * fastfile-factory.h: Ditto.
+       * storage-stream.c: Ditto.
+       * storage-stream.h: Ditto.
+
+2007-06-06  Ben Pfaff  <blp@gnu.org>
+
+       Add datasheet code.
+
+       * automake.mk: Add new files.
+
+       * datasheet.c: New file.
+
+       * datasheet.h: New file.
+
+2007-06-06  Ben Pfaff  <blp@gnu.org>
+
+       Until now, the procedure code has provided a case to the
+       case_source, which has filled in the data values that come from
+       the active file.  "Left" data values that don't come from the
+       active file naturally stay the same from case to case, because the
+       procedure code keeps using that same case.
+
+       One of the compromises that comes with the new procedure code is
+       that the active file allocates and provides its own case, which
+       the procedure code then has to resize to provide room for any
+       other variables that should go in the case and then fill in the
+       values of "left" variables.  Then, when we're done with that case,
+       we have to save the values of "left" variables to copy into the
+       next case read from the active file.
+
+       The caseinit code helps with this.
+
+       * automake.mk: Add new files.
+
+       * caseinit.c: New file. 
+
+       * caseinit.h: New file. 
+
+2007-06-06  Ben Pfaff  <blp@gnu.org>
+
+       * value.h (value_cnt_from_width): New function.
+
+       * variable.c (var_get_value_cnt): Use new function.
+
+2007-06-06  Ben Pfaff  <blp@gnu.org>
+
+       Add casegrouper, to allow cases read from a given casereader to be
+       broken into groups, each of which has its own casereader.
+       Generally cases are grouped based on having equal values for some
+       set of variables.
+
+       * automake.mk: Add new files.
+
+       * casegrouper.c: New file.
+
+       * casegrouper.h: New file.
+
+2007-06-06  Ben Pfaff  <blp@gnu.org>
+
+       Add interface to lexicographical ordering of cases.
+
+       * automake.mk: Add new files.
+
+       * case-ordering.c: New file.
+
+       * case-ordering.h: New file.
+
+2007-06-06  Ben Pfaff  <blp@gnu.org>
+
+       Add casereaders and casewriters, the basis of the new data processing
+       implementation.  A casereader is a uniform interface to reading cases
+       from a data source; a casewriter is a uniform interface to writing
+       cases to a data sink.
+
+       * automake.mk: Add new files.
+       
+       * casereader-filter.c: New file.
+       
+       * casereader-provider.h: New file.
+
+       * casereader-translator.c: New file.
+       
+       * casereader.c: New file.
+       
+       * casereader.h: New file.
+       
+       * casewriter-provider.h: New file.
+       
+       * casewriter-translator.c: New file.
+       
+       * casewriter.c: New file.
+       
+       * casewriter.h: New file.
+
+2007-06-06  Ben Pfaff  <blp@gnu.org>
+
+       "casewindow" data structure that extends the deque (from libpspp)
+       of cases with the ability to dump cases to disk if we get too many
+       of them in memory.
+
+       * automake.mk: Add new files.
+
+       * casewindow.c: New file.
+
+       * casewindow.h: New file.
+
+2007-06-06  Ben Pfaff  <blp@gnu.org>
+
+       sparse_cases data structure that augments a sparse_array of cases
+       with the ability to dump cases to disk if we get too many cases in
+       memory.
+
+       * automake.mk: Add new files.
+
+       * sparse-cases.c: New file.
+
+       * sparse-cases.h: New file.
+
 2007-06-06  Ben Pfaff  <blp@gnu.org>
 
        Adds a low-level on-disk case array data structure.