New Options for Local Essentia Version 3.1.0.3

Essentia Version 3.1.0.3 contains some options that aren’t mentioned anywhere else in the documentation. The two new options and the commands they affect are described below.

There is also an additional command called udbsql which is described in New Command for 3.1.0.3: udbsql.

Date Regex

This Date-regex option (--dateregex) can be used to match a regular expression pattern to the file paths and names in a category in order to extract the corresponding date. This increases the versatility of Essentia’s date extraction by allowing regular expression patterns and will allow date extraction from much more complex or unique file paths and names.

The key options you can provide it to symbolize each date segment are:

Date and Time:
[:%Y:] = Four Digit Year
[:%y:] = Two Digit Year
[:%m:] = Two Digit Month
[:%b:] = Three Letter Month (Jan, Feb, ..., Dec)
[:%B:] = Text Month (January, ..., December)
[:%d:] = Two Digit Day
[:%H:] = Two Digit Hour
[:%M:] = Two Digit Minute
[:%S:] = Two Digit Second
[:%z:] = TimeZone
[:%p:] = Case Insensitive AM or PM.

For filenames that dont have a date or number in them you can also set the Date Regex field to none.

File List Cache

This option (--usecache) stores a list of the files that are grouped into a category and references this list whenever that category is used. This list is static and must be updated if files in this category are changed or new files matching the file pattern are uploaded. This is a very useful feature for large repositories that have categories containing files spread across different directories or many undesired files in the same directory as the categorized files.

To change this option for a single category you would run ess category change name usecache [--usecache|--nocache].

Affected Commands:

Command	Arguments	Description
ess category add	name pattern `[--dateregex regex_pattern\|none]` `[--dateformat auto\|none\|custom]` `[--archive pattern]` `[--compression type\|none]` `[--delimiter delimiter]` `[--columnspec NewColumnSpec]` `[--allx]` `[--alls]` `[--overwrite]` `[--label name]` `[--comment comment]` `[--noprobe]` `[--usecache]`	Add a category to the datastore
ess category change	columnspec\|dateformat\|dateregex\|usecache\|comment NewSpec\|NewFormat\|NewRegex\|NewCache\|NewComment	Modify or override details about a category

The output of ess summary category is also affected and will display the original output plus the settings of these two new options (--dateregex and --usecache).