As default AND operator applied for all the empty space between the query, for example if we
search for “Water Power” internally it will converted as “Water AND Power” by search query processor.

Gooru removes stop-words from the index. However, stop words are not removed from the query, which means “ocean” and “The ocean” will return slightly different results.

Search query term supports following patterns:

Logical expression query
Resource format filter query
Prefix filter query
Standard code query

Logical Expression Query

Search query supports logical operators (AND, OR). If we pass AND and OR between search strings, query processor will take this query string as logical expression query. Only uppercase AND and OR considered as logical query operators.

Query	Results
greek OR latin	results matched with either greek or latin
greek or latin	results matched with “greek or latin”
greek AND latin	results matched with both greek and latin
greek latin	Same as greek AND latin. results matched with both greek and latin
(greek OR latin) AND (science OR math)	results matched with greek or latin and science or math

Resource Format Filter Query

Resource format (webpage, video, text, image) string passed with query will be applied as resource format filter.

Query	Results
power video	Results filtered by video resource format
atoms webpage	Results filtered by webpage resource format
water text	Results filtered by text resource format
ocean image	Results filtered by image resource format

Prefix Filter Query

If filter name is prefixed with search query and passed with colon (ie. grade:12) then it will be considered as filter.

Query	Results
ocean grade:6,7	Results filtered by grade value 6, 7
publisher:”Windows to the Universe”	Results filtered by publisher value Windows to the Universe
aggregator:CLRN	Results filtered by aggregator value CLRN

Standard Code Query

Gooru search supports search with standard code. If the search query matches with Gooru standard code, then query processor will internally apply standard code as standard code filter.

Standards Supported By Gooru:

Query	Results
CA.SCI.9-12.CH.2	Results filtered by given standard code value CA.SCI.9-12.CH.2 and query replaced by “all” query.