Allows to search in CELUM with a specified syntax similar to the Anura API search syntax.
####Search Syntax
* node (long[]) - node IDs to restrict the search to, e.g. node=123&node=987
* folder (int) - celum ID of the folder to restrict the search to, DEPRECATED -> use node
* keyword (int[]) - celum ID of the keyword to restrict the search to, multiple keywords (AND search) may be specified using search_keyword=1&search_keyword=2, DEPRECATED node
* node_startswith (string) - nodes that starts with term to restrict the search, e.g. node_startswith=bla
* node_contains (string) - nodes that contains term to restrict the search, e.g. node_contains=blub
* node_type (long) - node type IDs (e.g. 105,106)
* node_recursive (boolean) - search in subnodes as well, default is true
* noderef (boolean) - search in noderefs as well, default is true
* node_or_mode (boolean) - connect different search node terms with OR, default is AND
* images (boolean) - show images in result
* documents (boolean) - show documents in result
* videos (boolean) - show videos in result
* audios (boolean) - show audios in result
* others (boolean) - show others in result
* asset_type (long) - asset type IDs (e.g. 3000,4000)
* extensions (string[]) - search by file extension, e.g. search_extensions=png,eps
* id (list of long) - search particular assets via their ID
* uploaded_before (string) - restrict results to assets uploaded before this date
* uploaded_after (string) - restrict results to assets uploaded after this date
* modified_before (string) - restrict results to assets modified before this date
* modified_after (string) - restrict results to assets modified after this date
* infofield (int,mixed...[]) - search by information field value, syntax: ,[,...], Examples:
* text: `123,searchterm` _searches for the term "searchterm" in the infofield 123_
* number: `123,42` _searches for the number "42" in the infofield 123_
* number range: `123,42,1337` _searches for numbers between 42 and 1337 in the infofield 123_
* dropdown: `123,2` _searches for dropdown item #2 in the infofield 123_
* boolean: `123,false` _searches for "false" values in the infofield 123_
* noderefs: `123,456,789` _searches for nodes 456 or 789 in the infofield 123_
* date: `123,1970-01-01` _searches for the first of January 1970 in the infofield 123
* various date formats are auto-detected, such as `yyyy-MM-dd`, `dd.MM.yyyy` or `MM/dd/yyyy`
* [jchronic](https://github.com/samtingleff/jchronic)-expressions such as "yesterday" are also supported ([doc of the original ruby lib](https://github.com/mojombo/chronic)))
* date range: `123,2019-01-01,2019-12-31` _searches for any day in 2019 in the infofield 123
* open ranges can be defined using the term "null", e.g. anything before 2020 `123,null,2019-12-31`
* or_mode (boolean) - connect different search terms with OR, default is AND
* facets (int) - return facets (if a facet-provider is installed), 0 = disabled (default), 1 = only facets, 2 = facets and assets
Example:
node=123&node=345&node_startswith=bla&node_contains=blub&node_type=101,102&node_recursive=true
[GET]
## Release Notes
#### 1.0.0
> Released 2020-01-22
Initial version.