Set::Relation
---------------------------------------------------------------------------
2009-11-03 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.12.7 for Perl 5 is released on CPAN as
Set-Relation-0.12.7.tar.gz.
* (V1.pm) Fixed two instances of a bug, one in the private method
"_group" that manifests in all 4 public methods "[|cmpl_]group",
"[|outer_]join_with_group", and one in the "summary" public method.
There were no corresponding bugs in V2.pm. Thanks to Todd Hepler for
spotting the bug in "_group" and providing a patch.
* (Set_Relation_51_Database_in_Depth_Example.t) Added another test
block which exercises the "group" method, which previously had no
tests; this test exposed the "_group" bug. Thanks to Todd Hepler who
authored and contributed the new tests.
* Updated all author references to change Darren Duncan's stated email
address from "perl@DarrenDuncan.net" to "darren@DarrenDuncan.net".
2009-10-29 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.12.6 for Perl 5 is released on CPAN as
Set-Relation-0.12.6.tar.gz.
* More small Makefile.PL enhancements. Reverted part of the 0.12.5
change, in that the Makefile.PL now starts with use 5.8 rather than 5.6
but kept the 0.12.5 change in that warnings is still not fatal. This
was done since apparently there is no better way, under MakeMaker or
otherwise, to be more graceful about required perl version than what
results from the plain use-5.8 at the top of Makefile.PL. As the
0.12.5 Makefile.PL was, a Perl 5.6.2 was simply having errors at the
"make test" stage due to that requiring 5.8, rather than at the
Makefile.PL stage where it should have. Also in Makefile.PL, updated
the 'requires' item 'perl' to use X.00Y00Z format rather than X.Y.Z
since the upcoming META.yml spec would be stricter about the format.
2009-10-26 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.12.5 for Perl 5 is released on CPAN as
Set-Relation-0.12.5.tar.gz.
* Updated the distro's Makefile.PL so it will now run under older Perls
than the distro's payload modules would, so that users are informed
more gracefully about their need to upgrade. Rather than having the
same boilerplate use 5.8/utf8/strict/warningsFatal as the modules, the
Makefile.PL now has a more liberal 5.6/strict/warnings. Also added
explicit 'perl' requires-item to force mentioning of the Perl version
in the generated META.yml, since MIN_PERL_VERSION doesn't cause this.
2009-10-26 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.12.4 for Perl 5 is released on CPAN as
Set-Relation-0.12.4.tar.gz.
* Oops, the previous release 0.12.3 shipped with code all declared as
version 0.012002 rather than 0.012003; the metadata was correct though.
* Updated the README file to indicate that this distribution now has 2
public Git repositories, one on GitHub.com and one on utsl.gen.nz.
* Updated external dependencies: Moose/etc to version 0.92, Class::MOP
to version 0.94.
* (Relation.pm) Fixed a doc typo; the wrong param was referenced.
* (Relation.pm) Following a Muldis D v0.95.0 spec change, updated the
also-known-as notes for 2 functional methods.
* Updated the README file to mention the new Muldis-D-Manual distro.
* (Makefile.PL, V2.pm, V1.pm) Added explicit dependency on
Scalar::Util in both the Makefile.PL and in the "DEPENDENCIES" pod,
because it is a best practice to name all direct dependencies
regardless of whether any of them are normally bundled with Perl.
* Major update to the Makefile.PL (and META.yml) to make its format
more modern, in particular by distinguishing between dependencies that
are needed to use the Set::Relation modules and those needed only for
testing them or for configuring the distribution; previously, the
dependencies needed only for testing were treated as if necessary to
use Set::Relation itself; also added a list of "resources" urls.
2009-09-15 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.12.3 for Perl 5 is released on CPAN as
Set-Relation-0.12.3.tar.gz.
* Updated external dependencies: namespace::autoclean to version 0.09,
Moose/etc to version 0.90, Class::MOP to version 0.93.
* (V2.pm, V1.pm) Internals update to remain compatible with the latest
Moose/Class::MOP, which has deprecated the ability for one to say
"$obj->new(...)", which we had been doing internally rather than
"ClassName->new(...)" so that we still work when we're subclassed; so
now we use "(blessed $obj)->new(...)" to make new objects instead.
* (Relation.pm) In accordance with the Muldis D spec v0.87.0+, updated
the descriptions of the 10 functional methods that do
rename/projection/wrap/group/etc to update notes about alternate names
that each function or its operation are known as.
2009-08-29 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.12.2 for Perl 5 is released on CPAN as
Set-Relation-0.12.2.tar.gz.
* Updated external dependency on Test::More to version 0.92, which is
the version bundled with Perl 5.10.1.
* Updated external dependency on Test::Deep to version 0.106, which
currently is only used by the 1 test file
Set_Relation_51_Database_in_Depth_Example.t, because earlier versions
of Test::Deep (0.104) fail their tests under Perl 5.10.1.
* Updated external dependencies: Moose/etc to version 0.89, Class::MOP
to version 0.92.
* (Relation.pm) Other minor docs updates.
2009-08-08 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.12.1 for Perl 5 is released on CPAN as
Set-Relation-0.12.1.tar.gz.
* This distribution has excised its direct external dependency on the
"version" module (bundled with Perl versions 5.10.0+), which was used
in all .pm files and a .t file. And so, the modules in this
distribution now declare floating point version numbers of format
X.00Y00Z in their code (0.012001 for example); however, all module
documentation, and the distribution itself, still uses 3-part version
numbers of format X.Y.Z (0.12.1 for example) as before. The main
reason for this change is to gain simplicity and reduce possible bugs.
2009-08-03 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.12.0 for Perl 5 is released on CPAN as
Set-Relation-0.12.0.tar.gz.
* Updated external dependencies: Moose/etc to version 0.88, Class::MOP
to version 0.91.
* This release features a number of functional method updates in
accordance with the latest Muldis D spec (v0.82.0).
* (Relation.pm, V2.pm, V1.pm) WARNING: INCOMPATIBLE CHANGE: Updated
each of the 3 public functional methods "[|cmpl_]wrap", "unwrap" to
swap the canonical order of its 2 "outer", "[|cmpl_]inner" parameters
so that the one applying to the method's result appears first / on the
left. Likewise with each of the 5 public functional methods
"[|cmpl_|un|[cardinality|count]_per_]group" and its 2
"[outer|count_attr_name]", "[inner|group_per]" parameters. Also
updated the 1 "rename" public functional method's "map" parameter to
swap the Hash keys and values so that the Hash keys now represent the
"new" names and the Hash values now represent the "old" names.
* (Set_Relation_51_Database_in_Depth_Example.t) Updated the tests of
the "rename" method to conform to its updated API.
* (Relation.pm) Updated the descriptions of 10 functional methods to
add notes about alternate names that the function or its operation are
known as. The alternate names are symbolic and use combinations of
these: '{', '}', '<-', '@'. Used for rename/projection/wrap/group/etc.
2009-07-21 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.11.3 for Perl 5 is released on CPAN as
Set-Relation-0.11.3.tar.gz.
* Updated external dependency on Test::More to version 0.88, which
currently is only used by the 3 test files, same as what used previous
versions. While earlier versions of Test::More are bundled with Perl
5, only the impending Perl 5.10.1 will bundle a version not earlier
than 0.88, so meanwhile you must update Test::More from CPAN. The test
files were updated to no longer declare a planned number of tests at
the start, but instead to declare "done_testing()" at the finish. This
change should help make further simultaneous development and merging by
multiple developers less error prone.
2009-07-08 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.11.2 for Perl 5 is released on CPAN as
Set-Relation-0.11.2.tar.gz.
* As of this release, Set::Relation for Perl 5 uses the
namespace::autoclean pragma instead of the namespace::clean pragma,
because it is easier to use and not so contrived in how it works and is
a generally recommended upgrade by savvy people. Note that the newer
dependency has a larger not-bundled dependency chain, including
Class::MOP, but this isn't a problem because Set::Relation for Perl 5
already uses Moose anyway.
* This distribution has gained a new direct external dependency on the
Carp::Always module, which currently is only used by the 3 test files.
* Updated external dependencies: Moose/etc to version 0.87, Class::MOP
to version 0.89.
* (Relation.pm) Minor docs fix.
2009-06-08 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.11.1 for Perl 5 is released on CPAN as
Set-Relation-0.11.1.tar.gz.
* Updated external dependencies: Moose/etc to version 0.81, Class::MOP
to version 0.85.
* (Relation.pm) In accordance with the latest Muldis D spec (v0.77.0),
the Muldis D concept or type a Set::Relation object represents is now
simply called "relation", which was renamed from "quasi-relation" in
the spec. Accordingly, removed the DESCRIPTION paragraph saying that a
Set::Relation isn't quite a relational model relation; rather I am now
claiming that it is exactly the same, though it is most like the less
strict version where it is like every relation attribute may have a
declared type of the universal set of values. There are no actual code
changes in the Set::Relation distro associated with this update.
2009-06-01 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.11.0 for Perl 5 is released on CPAN as
Set-Relation-0.11.0.tar.gz.
* Updated external dependencies: Moose/etc to version 0.79, Class::MOP
to version 0.84.
* This release features a number of functional method updates or
additions in accordance with the latest Muldis D spec (v0.75.0).
* (Relation.pm, V2.pm, V1.pm) WARNING: INCOMPATIBLE CHANGE: Updated
each of the 2 "is[|_proper]_subset" public functional methods so that
the canonical sequence of its invocant and parameter is reversed, so
the method's name, used infix as normal for OO, would read correctly;
also renamed said 2 inputs so that "look_for" is now "topic" and
"look_in" is now "other". This change is silently incompatible and old
user code will continue to run without changes, but would give the
wrong answers; any old code like "$foo->is_subset($bar)" will need to
be changed to "$bar->is_subset($foo)" to keep its semantics, or
alternately be changed to "$foo->is_superset($bar)" (see next chg itm).
* (Relation.pm, V2.pm, V1.pm) Added the 2 public functional methods
(in the Set::Relation role) "is[|_proper]_superset", where each is an
alias for another function, "is[|_proper]_subset", save that its
invocant and argument are transposed.
* (Relation.pm, V2.pm, V1.pm) Renamed the public functional method
"is_member" to "has_member" so that the methods's name, used infix as
normal for OO, reads correctly.
* (Relation.pm, V2.pm, V1.pm) Renamed these 8 public functional
methods to terser versions of themselves mainly for the purpose of
making them easier to type: "cmpl_projection" -> "cmpl_proj",
"transitive_closure" -> "tclose", "restriction_and_cmpl" ->
"restr_and_cmpl", "cmpl_restriction" -> "cmpl_restr",
"static_extension" -> "static_exten", "[|semi]difference" ->
"[|semi]diff", "static_substitution" -> "static_subst".
* (Relation.pm, V2.pm, V1.pm) Added the 4 public functional methods
(in the Set::Relation role) "count", "count_per_group",
"symmetric_diff", "antijoin", where each is a simple alias for another
functional method, "cardinality", "cardinality_per_group", "exclusion",
"semidiff".
* (Relation.pm, V2.pm, V1.pm) Minor docs update to reflect that the
Muldis D dialect HDMD_Perl5_Tiny was renamed to HDMD_Perl5_STD.
* (Relation.pm) Some POD reformatting: Updated every method signature
having a param "FooType $bar_param" with a linebreak between the paired
type name and param name so that each pair is entirely on one line.
* (Relation.pm) Updated the docs for all 14 functional methods that
have one or more parameters whose declared Perl 6 type was "Code", so
that the more modern Perl 6 type name of "Callable" is used instead.
* (Relation.pm) Updated the docs on 3 functional methods to use more
correct terminology with respect to symmetric dyadic functions, so that
it now calls each a "symmetric function" rather than a "function with 2
mutually commutative main parameters": "is_identical", "is_disjoint",
"composition".
* (Relation.pm) Annotated the docs on 3 of the functional methods that
previously were directly described with "commutative and associative"
to now also say "idempotent" when the main inputs were supplied
conceptually as a set argument and not a bag: "union", "intersection",
"join". Now "product" is also idempotent, but its description just
says "like join". The only N-adic functional method that isn't
idempotent is "exclusion".
* (Relation.pm) Updated the descriptions of 16 functional methods to
add or update notes about alternate names that the function or its
operation are known as, in particular adding the various math/etc
symbols they represent.
2009-04-21 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.10.0 for Perl 5 is released on CPAN as
Set-Relation-0.10.0.tar.gz.
* Updated external dependencies: namespace::clean to version 0.11,
Moose/etc to version 0.75, Class::MOP to version 0.82.
* This release features a number of functional method updates or
additions in accordance with the latest Muldis D spec (v0.64.0).
* (Relation.pm, V2.pm, V1.pm) Added, to the Set::Relation role and its
composing classes, 2 new functional methods
"[rank|limit]_by_attr_names", which are like "rank|limit" but that
rather than taking a closure function to determine relative ordering of
each pair of tuples, it takes an array of attribute names to order by;
the new methods are more specialized versions of the old ones, and are
recommended for use where they are applicable. It is significant to
note that these are the first Set::Relation routines that make use of
the implementation technique of generating and evaling Perl code to do
the actual work, which allows us to unroll what would otherwise be
loops iterating over the attributes being ordered by; this should
further yield better performance; both V2 and V1 have done this.
* (Relation.pm, V2.pm, V1.pm) Changed the "summary" functional method
by renaming its "result_attr_names" parameter to "summ_attr_names" and
redefining its functionality more in terms of "extension" rather than
"map"; the function given to "summ_func" must now just result in a
tuple with attributes to add to a result which now already has all the
attributes named by "group_per", rather than resulting in all
attributes for the result. The new version of "summary" should be much
easier to use as presumably users always want to keep the attributes
they are grouping per, and they now don't have to spell them out every
time. For the rare case where you want the old behaviour, now you have
to do it manually with an explicit "cmpl_group" plus "map".
* (Relation.pm, V2.pm, V1.pm) Added, to the Set::Relation role and its
composing classes, new functional method "cardinality_per_group" which
is like "summary" but shorthands the common case where people just want
a count of tuples per group and not any other information.
2009-03-24 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.9.0 for Perl 5 is released on CPAN as
Set-Relation-0.9.0.tar.gz.
* (Relation.pm, V2.pm, V1.pm) Added new functional method
"classification" which is sort of a cross between "restriction" and
"group"; it uses a Perl subroutine argument to partition a relation's
tuples into an arbitrary number of groups. It is named after Perl 6's
"classify" operator, and is like List::MoreUtil's "part" function.
* (Relation.pm) Updated the Set::Relation role in several closely
related ways. Added new named parameter to 'new' named 'keys' which
lets one define candidate keys for the new relation which the 'members'
argument must satisfy for 'new' to succeed; a variety of format
examples were included in the documentation. Also updated the accessor
method 'export_for_new' and added the accessor method 'keys' which take
care of dumping the list of candidate keys that the relation object is
known to satisfy. Also added new functional method 'has_key' which
tests whether the invocant relation has a certain candidate key; if it
does, this method also has the side effect of remembering the fact for
'keys' to return later. It was also documented in a few places that
these 'keys' are not constraints against future object mutations, and
so they might be invalidated by 'insert' later for mutable objects.
The ::Mutable role inherits all these changes.
* (V2.pm) Updated the Set::Relation::V2 class to implement the new
features required by the above change item. This is a fairly simple
first draft of of the 'keys' feature and isn't very integrated yet, not
any more than with V1; it currently doesn't have any positive impact on
performance and it currently just provides an extra kind of constraint
on new objects or an extra kind of validation on existing ones.
* (V1.pm) Updated the Set::Relation::V1 class to implement the new
features required by the above change item. The current implementation
also is such that while 'insert' is smart enough to clear a candidate
key iff it becomes violated, 'delete' will not restore or add any
candidate key; you must invoke 'has_key' later to do that. Also, like
with indexes, all new relations derived from others such as by 'clone'
or 'new' or relational operations will start out with no 'keys' for
simplicity; presumably an upcoming V2 will be different.
2009-03-23 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.8.0 for Perl 5 is released on CPAN as
Set-Relation-0.8.0.tar.gz.
* This release features the addition of a second bundled implementation
of the Set::Relation role, called V2, which should have different (and
hopefully better) performance characteristics than V1. This release
doesn't change the S::R public API in any particularly substantial way.
* Updated external dependencies: Moose/etc to version 0.72, Class::MOP
to version 0.78.
* (Set_Relation_5[0_Synopsis|1_Database_in_Depth_Example].t,
Relation.pm) Updated the test suite and the SYNOPSIS docs and the
'new' submethod docs to avoid the repetition of the
Set::Relation-implementing class name by creating a one-liner-per-file
wrapper function over 'new' named 'relation' which is now used for all
methodless S::R object creation.
* (Set_Relation_5[0_Synopsis|1_Database_in_Depth_Example].t) Updated
the test suite internals to make them more modular; in each test file,
refactored all the actual tests into a subroutine, so the set can be
defined once and reinvoked for each bundled Set::Relation-doing class,
when more than one of those (others besides V1.pm) come to exist.
* (Relation.pm) Updated all 10 methods of the Set::Relation role that
had a "Array|Str"-typed parameter named "[|\w+_]attrs" and renamed said
parameter to "[|\w+_]attr_names"; any similarly named parameters that
were of some other type, such as "Hash", kept their old names. This
change should make the parameters more self-documenting, since "attrs"
names now tend to have both attribute names and values, where as
"attr_names" have just names. The changed 10 methods were: "slice",
"has_attrs", "[|cmpl_]projection", "extension", "map", "summary",
"substitution", "subst_in_[restr|semijoin]". Note that, since all of
the methods' parameters are positional (rather than named), the change
is completely backwards compatible.
* (V1.pm) Updated the Set::Relation::V1 class to rename some of its
public method parameters as per the previous change item.
* (Relation.pm) Added new performance-enhancing feature to the
Set::Relation role, in the form of a new optional boolean parameter
"allow_dup_tuples" for each of 17 methods. Each Set::Relation-doing
class has the option of honoring a true argument for that parameter by
avoiding work involved in eliminating duplicate tuples and thereby
having possibly different results or side-effects on said method
invocations, due to what are partially multiset semantics being used
instead of set semantics. So users can explicitly request, on a
case-by-case basis, to get possibly less accurate but "good enough"
results in exchange for better performance. Also added new
documentation sub-section "Matters of Correctness" under the
DESCRIPTION main section, that explains the feature. The changed 17
methods were: "export_for_new", "members", "body", "slice", "attr",
"cardinality", "[|cmpl_]restriction", "restriction_and_cmpl",
"extension", "map", "summary", "substitution"
"[|static_]subst_in_restr", "subst_in_semijoin",
"outer_join_with_exten".
* (V1.pm) Updated the Set::Relation::V1 class to add some public
method parameters as per the previous change item. However, this
change is a no-op since the parameters are ignored in every case, with
the semantics being the same as if they were never given arguments.
* (Relation.pm, V1.pm) Various other small updates and fixes.
* Added new file lib/Set/Relation/V2.pm which is now the bundled second
implementation of the Set::Relation role, and updated all the other
relevant distribution files concerning it. The new V2.pm initially
started as a clone of V1.pm following all of the above change items,
and then differentiated in 2 main ways: The first is that V2 provides
immutable objects (doesn't do ::Mutable) while V1 provides mutable
objects. The second is that V2 is lazy and will defer any tests for
duplicate tuples as late as possible, while V1 is eager and will test
for duplicate tuples as early as possible; V2 will also respect true
"allow_dup_tuples" arguments, while V1 will ignore them. Besides those
2 matters and their associated large differences in performance
profiles, V2 is essentially the same as V1, including that relation
tuples are internally represented by Perl Hashes. Also V2 just has a
short DESCRIPTION pod section to start out, while V1's is longer.
2009-02-13 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.7.0 for Perl 5 is released on CPAN as
Set-Relation-0.7.0.tar.gz.
* Updated external dependencies: Moose/etc to version 0.69.
* Split up Relation.pm into itself and the new file
lib/Set/Relation/V1.pm; Relation.pm now declares a role rather than a
class, and V1.pm is a class doing that role. Relation.pm now declares
the Set::Relation API and keeps nearly all the old module
documentation, and V1.pm has nearly all of the old code. Moreover,
Relation.pm now declares not one but 2 roles, Set::Relation and
Set::Relation::Mutable, where the latter consumes the former and
Set::Relation::V1 consumes the latter; the former role promises that
its composing class' objects are immutable unless they also compose the
latter. The ::Mutable role got the 6 public methods ['clone',
'has_frozen_identity', 'freeze_identity', 'evacuate', 'insert',
'delete'] plus the 'has_frozen_identity' optional parameter of the
'new' constructor, and the parent role got all the other public things.
Also updated the test suite, and the SYNOPSIS pod, to account for this
split, and they now invoke the ::V1 class directly rather than the
shorter package name that is now a role. The new class has exactly the
same API as the old class.
* Updated the TODO file to outline plans for a near future ::V2 class
which represents tuples using Perl Array rather than Perl Hash.
2009-02-09 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.6.0 for Perl 5 is released on CPAN as
Set-Relation-0.6.0.tar.gz.
* As of this release, Set::Relation for Perl 5 directly uses the
List::MoreUtils module to handle some of its detail work; this
distribution has now gained a direct external dependency on the Perl 5
module 'List::MoreUtils', which is not bundled with any version of Perl
and will need to be installed from CPAN. That said, List::MoreUtils
was already a dependency of Set::Relation's existing Moose dependency,
so the whole dependency tree has not enlarged.
* (Relation.pm) Added these 14 object methods: "wrap", "cmpl_wrap",
"unwrap", "group", "cmpl_group", "ungroup", "summary",
"join_with_group", "rank", "limit", "outer_join_with_group",
"outer_join_with_undefs", "outer_join_with_static_exten",
"outer_join_with_exten". As of now, all of the pre-documented and
TODO-marked object methods have been implemented.
* (Relation.pm) Replaced all instances of "__PACKAGE__->new(...)" with
"$self->new(...)" etc, to help avoid potential future problems when
someone tries to subclass the module.
* (Relation.pm) Various bug fixes and other small changes.
* As of this release, Set::Relation is officially in alpha development
status (was pre-alpha). All of the initially planned functionality is
now implemented, so it is feature complete, which is why it was moved
out of pre-alpha status. However most of the functionality has not
been tested and so is not proven to actually work without error. Once
the module has a thorough test suite which passes, Set::Relation can be
moved to beta or released status.
2009-02-09 Darren Duncan <darren@DarrenDuncan.net>
Record update in the PAUSE modules database:
modid: [Set::Relation]
statd: [a] was [c]
stats: [m]
statl: [p]
stati: [O]
statp: [l]
description: [Relation data type for Perl]
userid: [DUNCAND]
chapterid: [6]
mlstatus: [list]
2009-02-06 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.5.0 for Perl 5 is released on CPAN as
Set-Relation-0.5.0.tar.gz.
* (Relation.pm) Added these 8 object methods (still 14 to go):
"restriction_and_cmpl", "semijoin_and_diff", "substitution",
"static_substitution", "subst_in_restr", "static_subst_in_restr",
"subst_in_semijoin", "static_subst_in_semijoin".
* (Relation.pm) Other minor updates and fixes.
2009-02-05 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.4.0 for Perl 5 is released on CPAN as
Set-Relation-0.4.0.tar.gz.
* Updated external dependencies: Moose/etc to version 0.68.
* As of this release, Set::Relation for Perl 5 uses the
namespace::clean pragma for good hygiene; this distribution has now
gained an external dependency on the Perl 5 module 'namespace::clean',
which is not bundled with any version of Perl and will need to be
installed from CPAN; namespace::clean also has a few not-bundled
dependencies of its own.
* (Relation.pm) Added "use namespace::clean" statements inside the
package declaration following any other "use" statements, so their
exports into our package doesn't also become part of our own public API
as a side-effect; the only exception is the "meta" method that Moose
adds, which is kept.
* (Relation.pm) Added new documentation sub-section under
"DESCRIPTION" named "Appropriate Uses For Set::Relation", which should
hopefully answer some FAQs, such as why does the module exist, and
pointing out some strengths and weaknesses.
* (Relation.pm) Corrected a forgetful oversight in the module
documentation concerning Set::Relation's "has_frozen_identity" object
attribute; this attribute had an auto-generated read-only public
accessor method plus is automatically initialized from a same-named
constructor method; added "has_frozen_identity" to the accessor method
list, and updated the "new" constructor submethod signature.
* (Relation.pm, Set_Relation_50_Synopsis.t,
Set_Relation_51_Database_in_Depth_Example.t) Updated the "new"
constructor submethod so that it now accepts a single positional
argument as an invocation option, where before it just accepted named
arguments (and it still does); a single positional argument to "new" is
treated the same as a single "members" named argument. This change
means that the majority of current or anticipated future use cases of
Set::Relation are now terser by about 9-11 characters ("members => ")
per "new" invocation. (This new feature was implemented mainly by
adding a simple BUILDARGS method to Relation.pm.) Updated all the
examples and tests to use the new terser format.
* (Relation.pm) As a consequence of the previous change, the "new"
constructor has also been updated so that the "members" argument is no
longer allowed to be a Perl Hash (because a lone Hash positional
argument is one of the standard Moose format options to supply named
arguments) so any invocations of "new" which gave a Hash argument will
have to become 2 characters ("[]") more verbose, wrapping it in an
Array. Removed the example using a Hash.
* (Relation.pm) Added the Moose concerning recommended practice
"__PACKAGE__->meta()->make_immutable();" line to the end of the module,
which should help performance regarding Moose-generated stuff; this
would've been done before release 0.0.0 but was forgotten at the time.
* (Relation.pm) Updated the "LICENSE AND COPYRIGHT" documentation
section to change the Copyright declaration from "Darren Duncan" to
"Muldis Data Systems, Inc." (which is wholly owned by Darren Duncan).
2009-02-02 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.3.0 for Perl 5 is released on CPAN as
Set-Relation-0.3.0.tar.gz.
* (Relation.pm) Added these 5 object methods (still 20 to go):
"slice", "attr", "has_attrs", "attr_names", "transitive_closure".
* (Relation.pm) Other minor updates and fixes.
2009-02-01 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.2.0 for Perl 5 is released on CPAN as
Set-Relation-0.2.0.tar.gz.
* (Relation.pm) Added full documentation for the remaining 25 object
methods that Set::Relation expects to have implemented prior to being
moved to alpha development status; each is marked TODO in its title;
this change item doesn't have a list of said methods, but when they are
implemented in the next 1-3 releases, the change log will mention them
simply as being new, same as if they hadn't been pre-documented now
(and the TODO marker on their docs will be silently removed).
* (Relation.pm) Added placeholder code for said 25 TODO methods, each
of which will die with an "unimplemented" message if invoked.
* (Relation.pm) Other minor code updates.
2009-01-31 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.1.0 for Perl 5 is released on CPAN as
Set-Relation-0.1.0.tar.gz.
* This release features a few API changes, some significant feature
additions, and bug fixes to existing routines, but no public facing
routines have been added or removed. New routines should feature in
the next 0.Y.0 release.
* (Relation.pm) Updated each of the 5 functional methods ["union",
"exclusion", "intersection", "join", "product"] so it is now an N-adic
operator rather than a dyadic operator. Each method's "other"
parameter was renamed to "others" and now takes either a single
Set::Relation object as before or an Array of 0..N Set::Relation
objects which is new. With this change, these operators are now at
feature parity with the Muldis D functions they are based on, except
that they never handle the niladic option; being object methods, there
is always at least one operand which is the invocant.
* (Relation.pm) Updated each of the 4 functional methods
["[|cmpl_]restriction", "extension", "map"] to remove its optional
"assuming" parameter. This parameter was a fossil left over from the
original Muldis D versions of these operators that the Perl version was
ported from; the parameter was necessary in Muldis D to have reasonable
flexibility due to Muldis D lacking certain other features that Perl
has, which make this parameter unnecessary in Perl. The removal was to
keep the Perl simpler; it also sets the stage for the next change item.
* (Relation.pm, Set_Relation_51_Database_in_Depth_Example.t) Updated
each of the 4 functional methods ["[|cmpl_]restriction", "extension",
"map"] so that the Perl routine supplied as its "func" argument is now
assumed to have zero parameters rather than one, and the Perl routine
is now supplied its input tuple/Hash in $_, same as how Perl's built-in
map/grep operators work, rather than as a first/only argument. Thanks
to Todd Hepler for proposing that design change to "restriction" to
make it more DWIM.
* (Relation.pm, Set_Relation_51_Database_in_Depth_Example.t) Updated
each of the 4 functional methods ["[|cmpl_]projection", "extension",
"map"] so that the "[|result_]attrs" parameter can also take a Str
argument rather than just an Array of Str argument. Thanks to Todd
Hepler for proposing that design change to "projection" to make it more
DWIM. Also updated the Set::Relation constructor submethod similarly,
so its "members" parameter may also take a Str argument; this would
produce a relation object with 1 attribute and zero tuples.
* (Relation.pm) Fixed an "insert" mutator method bug so it detects
and blocks attempts to insert the invocant Set::Relation object into
itself as a value-typed component, which would have had the side-effect
of freezing the invocant, or would have conceptually been an infinite
recursive deep copy operation; also fixed the "delete" mutator with
the same detector since it would have had the same freezing problem.
* (Relation.pm) Updated all routines that take tuple-representing Hash
values from the user, either directly or as tuple-valued attrs, either
as a routine argument or a closure return value, so that each Hash is
tested for circular references between itself or its value-typed
components; this update fixes a general bug where the module could
infinitely recurse when processing that input, since tuple-representing
input from the user is deep-copied.
* (Relation.pm) Some POD reformatting: Took what used to be the 5
level-2 headings under the INTERFACE level-1 heading and changed said 5
into level-1 headings, but did not uppercase their text. Then
converted the routine lists from being "=over/=item <routine>/=back" to
each routine having its own level-2 heading. For each routine, the new
heading is just the short name of the routine, and the full signature
of the routine displays just as its own paragraph. All these changes
combined should look visually like we are faking 3 levels of headings,
with top and middle being upcased and mixed case "=head1" respectively.
* (Relation.pm) Minor code and POD updates and fixes.
2009-01-26 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.0.2 for Perl 5 is released on CPAN as
Set-Relation-0.0.2.tar.gz.
* (Relation.pm) Fixed two instances of a bug in the "rename" method.
Thanks to Todd Hepler for spotting the bug and providing a patch.
* Added new test file "t/Set_Relation_51_Database_in_Depth_Example.t",
which exercises more than a half-dozen Set::Relation methods that
previously had no tests; the "rename" bugs were exposed when writing
this. Thanks to Todd Hepler who authored and contributed this file.
* This distribution has gained a new direct external dependency on the
Test::Deep module, which currently is only used by the new test file.
* (Relation.pm) Minor code comment fixes and POD updates.
2009-01-21 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.0.1 for Perl 5 is released on CPAN as
Set-Relation-0.0.1.tar.gz.
* (Relation.pm) Fixed a bug in the "quotient" method, and further
updated it with some special-case shortcuts.
* (Relation.pm) Other minor updates.
* (README, Relation.pm) Previously the FORUMS pod section of
Relation.pm and 3 parts of the README file lacked content, and now they
have it; added documentation about where the Set::Relation version
control and support forums are.
2009-01-19 Darren Duncan <darren@DarrenDuncan.net>
* Set::Relation version 0.0.0 for Perl 5 is released on CPAN as
Set-Relation-0.0.0.tar.gz.
* It constitutes a rewrite of Set::Relation for Perl 6 that had been
made in 2006 but was never functional; the large body of work going
into the Muldis D language and Muldis Rosetta framework during the
intervening period also fed into this new Set::Relation module; it is
expected that this new Set::Relation for Perl 5 will be ported to Perl
6 in the near future and so upgrade that 2006 version; meanwhile, this
Changes entry refers only to the Perl 5 version.
* This is the first release of the Perl 5 Set::Relation distribution,
and the first release of any distribution to contain a Perl 5 module
named Set::Relation.
* This is the initial file manifest:
Changes
INSTALL
lib/Set/Relation.pm
LICENSE/GPL
LICENSE/LGPL
Makefile.PL
MANIFEST
MANIFEST.SKIP
README
t/Set_Relation_00_Compile.t
t/Set_Relation_50_Synopsis.t
TODO
* As of this release, Set::Relation is officially in pre-alpha
development status.
* This is the initial complement of routines; besides the "new"
constructor submethod, there are these 40 object methods: "clone",
"export_for_new", "freeze_identity", "which", "members", "heading",
"body", "evacuate", "insert", "delete", "degree", "is_nullary",
"cardinality", "is_empty", "is_member", "empty", "insertion",
"deletion", "rename", "projection", "cmpl_projection", "restriction",
"cmpl_restriction", "extension", "static_extension", "map",
"is_identical", "is_subset", "is_proper_subset", "is_disjoint",
"union", "exclusion", "intersection", "difference", "semidifference",
"semijoin", "join", "product", "quotient", "composition".
2009-01-04 Darren Duncan <darren@DarrenDuncan.net>
The next version of the Module List will list the following module:
modid: Set::Relation
DSLIP: cmpOl
description: Relation data type for Perl
userid: DUNCAND (Darren Duncan)
chapterid: 6 (Data_Type_Utilities)
enteredby: BDFOY (brian d foy)
enteredon: Mon Jan 5 06:12:12 2009 GMT
The resulting entry will be:
Set::
::Relation cmpOl Relation data type for Perl DUNCAND
2006-04-14 thru 2006-11-22
* A Perl 6 project named "Relation" is started (complementary to the
earlier existing to-be-named Muldis Rosetta project) which was intended
to provide native tuple and relation data types for ordinary use in
Perl 6 programs like other built-in collection types. The first commit
was Pugs SVN rev 9938, on 2006-04-14, and Pugs 6.2.12 (2006-06-26)
included it. Hence 2006 is the start of the declared copyright date
range for Set::Relation.
* On 2006-07-04, renamed this Perl 6 project to "Set-Relation", which
it remains to this day. Pugs 6.2.13 and later included this.
* The Perl 6 Set-Relation received various small updates thru
2007-02-03 (Pugs SVN rev 15168), but is now stagnant; it will likely
get un-stuck after the initially newer Perl 5 version is made to work.
2005-12-05
* Darren Duncan is introduced by David Wheeler to the truly relational
model of data, in a posting on the Bricolage development list in the
"Re: [6977] New branch for maintenance of Bricolage 1.10.x." thread.
* David said that Darren's expressed thought, that compound data types
in table fields was a violation of first normal form, was in fact a
misconception about the relational model. David then referenced a
recent interview with C. J. Date.
* This set off a chain of events which was the largest paradigm shift
to ever affect what evolved into the Muldis Rosetta project, and also
resulted in the genesis of the Set::Relation module.