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Google Search Appliance: Search Protocol Reference Request Format 34

Combining Language Filters

Search requests that use the

parameter support the Boolean operators identified in the following

table in order of precedence.

Note: Spaces are not valid characters in the collection string.

Internationalization

To support searching documents in multiple languages and character encodings, Google provides the ie

and oe parameters. The ie parameter indicates how to interpret characters in the search request. The

oe parameter indicates how to encode characters in the search results. To appropriately decode the

search query and correctly encode the search results, supply the correct ie and oe parameters,

respectively, in the search request.

Note: When you are providing search for multiple languages, Google recommends using

utf8

encoding

value for the ie and oe parameters.

Examples

Example 1. The following search request interprets the search query “gloves” using

latin1

encoding,

searches for English or French results, and returns results using

latin1

encoding:

GET /

search?q=gloves&client=test&site=test&lr=lang_en|lang_fr&ie=latin1&oe=latin1

Boolean Operator Sample Usage Description

Boolean NOT [ - ]

-lang_fr

Removes all results that are defined as

part of the Language Filter immediately

following the

operator. The example

value would remove all results in

French.

Boolean AND [ . ]

gloves.hats

Returns results that are in the

intersection of the results returned by

the collection to either side of the dot

operator. The example

restrict

value

returns results which are in both the

“hats” and “gloves” custom collections.

Boolean OR [ | ]

lang_en|lang_fr

Returns results that are in either of the

results returned by the collection to

either side of the pipe operator (|). The

example

value returns results

matching the query that are in either

French or English.

Parentheses [ ( ) ]

(gloves).(-(lang_hu|lang_cs))

All terms within the innermost set of

parentheses are evaluated before terms

outside the parentheses are evaluated.

Use parentheses to adjust the order of

term evaluation. The example

value

returns all results in the “gloves” custom

collection that are not in either the

Hungarian or Czech collections.

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