sysdb-0.6.0

Release 0.6.0 of SysDB.

Version 0.6.0, Release Date: 2014-11-17
---------------------------------------

  This release focuses on a clearer query language. The underlying
  architecture has been refactored to allow for more powerful and generic
  expressions.

   * core:
     - Added support for arrays. Elements may be of any other supported
       data-type but only integers, decimals, and strings are fully supported.
   * store:
     - Refactored matchers: all matchers now operate on one or two expressions
       or other matchers, replacing the old and less flexible conditional
       matchers.
     - Attribute values may now be used anywhere in an expression.
     - On data-type mismatch when comparing attribute values, the values will
       be cast to string (previously only done for regex matches).
     - Added support for querying an object's backends (array of strings).
     - Added support for iterating child objects and array values.
     - All matchers now return false if any operand is NULL (except for IS
       NULL).
     - All operations now return NULL if any operand is NULL.
     - Fixed behavior of not-operators (!=, !~) and let them not match if any
       of the operands is NULL.
     - Add support for looking up all object types (hosts, services, metrics).
     - Refactored the JSON formatter to be more flexible and powerful.
     - Record parent objects for each stored object.
   * frontend:
     - Added a separate parser mode for expressions.
     - Added a new queryable field 'name' to be used in place of the rather
       magical keyword 'host' when looking up hosts.
     - Improved error reporting in the parser and the (newly introduced)
       analyzer.
     - Apply filters to hosts in the FETCH command.
   * query language:
     - All operators may now be used in all places if the involved data-types
       support the respective operation. For example, regular expressions may
       be used to match any value. Non-string values are cast to strings for
       that purpose. IS NULL / IS NOT NULL may be applied to arbitrary
       expressions.
     - Introduced the 'IN' operator to check if a value or an array of values
       is included in an array.
     - Added support for arrays: [<elem1>,<elem2>,...]
     - Added support for string and array concatenation using the '||'
       operator.
     - Attribute names have to be strings instead of identifiers now.
     - Access object fields using '<field>' rather than '.<field>'.
     - Let the LOOKUP and FETCH commands support services and metrics.
     - Introduced 'FETCH service|metric <host>.<name' for fetching services
       and metrics.
     - Added support for 'ANY' and 'ALL' operators which apply a matcher to
       each value emitted by an iterator (a host's services and metrics or
       arrays). 'MATCHING ANY service|metric|attribute <cmp> <expr>' replaces
       'MATCHING service|metric|attribute <cmp> <value>' expressions.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)

iEYEABECAAYFAlRqVNUACgkQEFEKc4UBx/w0NACglEjW7l2wPPjCEonaBKWeJhlO
ttgAn1uMX+P5jlSAiuqFf3vONwI1hxsF
=a083
-----END PGP SIGNATURE-----