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search-ui.txt: 'and', 'or' and parenthesis description 

Change-Id: Ie6c077e008084dec0817b2de23832646f4ba99c7
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Steven L. Speek 2014-03-22 22:56:47 +01:00
parent bfe27edc7f
commit 0f644c4244
1 changed files with 15 additions and 8 deletions
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doc/search-ui.txt
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@ -1,17 +1,24 @@
The User Interface's "Search" box accepts a space-separated list of predicates of the
form "[-]operator:value[:value]". These predicates are combined using conjunction.
That is to say we only have 'and' and atom negation for now.
The User Interface's "Search" box accepts predicates of the form "[-]operator:value[:value]".
These predicates may be separated by 'and' or 'or' keywords, or spaces which mean the same
as 'and'. Expressions like this may be grouped with parenthesis. Grouped expressions are
evaluated first. Grouped expressions may be negated.
An 'and' besides an 'or' is evaluated first. This means for example that
tag:foo or is:pano tag:bar
will return all images having tag foo together with the panorama images having tag bar.
Negation of a predicate is achieved by prepending a minus sign: -is:landscape will match
with pictures of not landscape ratio.
For example
after:"2010-01-01" before:"2010-03-02T12:33:44" -loc:"Amsterdam"
-(after:"2010-01-01" before:"2010-03-02T12:33:44") or loc:"Amsterdam"
will return all images having "modtime" between before and after and not in Amsterdam.
will return all images having "modtime" outside the specified period, joined with
all images taken in Amsterdam.
When you need to match a value containing a space, you need to using double quotes around
When you need to match a value containing a space, you need to use double quotes around
the value only. For example: tag:"Three word tagname" and not "tag:Three word tagname".
If your value contains double quotes you can use backslash escaping.
For example: attr:bar:"He said: \"Hi\""
@ -34,11 +41,11 @@ Usable operators:
height: use height:min-max to match images having a height of at least min
and at most max. Use height:min- to specify only an underbound and
height:-max to specify only an upperbound.
Exact matches should use height:640-640
Exact matches should use height:480-480
tag: match on a tag
width: use width:min-max to match images having a width of at least min
and at most max. Use width:min- to specify only an underbound and
width:-max to specify only an upperbound.
Exact matches should use width:480-480
Exact matches should use width:640-640
childrenof: Find child permanodes of a parent permanode (or prefix
of a parent permanode): childrenof:sha1-527cf12