./databases/ruby-dm-is-nested_set, DataMapper plugin for creating nested sets from data models

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Branch: CURRENT, Version: 1.2.0, Package name: ruby27-dm-is-nested_set-1.2.0, Maintainer: pkgsrc-users

DataMapper plugin allowing the creation of nested sets from data models.
Provides all the same functionality as dm-is-tree, plus tons more! Read on.

== What is a nested set?

Nested set is a clever model for storing hierarchical data in a flat table.
Instead of (only) storing the id of the parent on each node, a nested set puts
all nodes in a clever structure (see Example below). That is what makes it
possible to get the all of the descendants (not only immediate children),
ancestors, or siblings, in one single query to the database.

The only downside to nested sets (compared to trees] is that the queries it
takes to know these things, and to move nodes around in the tree are rather
complex. That is what this plugin takes care of (+ lots of other neat stuff)!

Nested sets are a good choice for most kinds of ordered trees with more than
two levels of nesting. Very good for menus, categories, and threaded posts.

Master sites:

RMD160: 67806cfeb1024c88fc95a1daf5ab4d9fb7c27e6b
Filesize: 13.5 KB

Version history: (Expand)

CVS history: (Expand)

   2021-10-07 15:35:53 by Nia Alarie | Files touched by this commit (417)
Log message:
databases: Remove SHA1 distfile hashes
   2017-07-31 00:32:28 by Thomas Klausner | Files touched by this commit (229)
Log message:
Switch github HOMEPAGEs to https.
   2015-11-03 02:56:36 by Alistair G. Crooks | Files touched by this commit (368)
Log message:
Add SHA512 digests for distfiles for databases category

Problems found with existing distfiles:
No changes made to the cstore or mariadb55-client distinfo files.

Otherwise, existing SHA1 digests verified and found to be the same on
the machine holding the existing distfiles (morden).  All existing
SHA1 digests retained for now as an audit trail.
   2013-04-06 05:45:29 by Blue Rats | Files touched by this commit (152)
Log message:

 COMMENT should not be longer than 70 characters.
 COMMENT should not begin with 'A'.
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pkglint warnings. Some files also got minor formatting, spelling, and style
   2011-12-17 18:24:43 by Takahiro Kambe | Files touched by this commit (4) | Imported package
Log message:
Importing databases/ruby-dm-is-nested_set package version 1.2.0.