yaz_search

yaz_search

Prepares for a search

bool **yaz_search** resource $id string $type string $query

prepares for a search on the given 

connection. yaz_search

Like this function is non-blocking and only prepares for a search to be executed later when is called. yaz_connect``yaz_wait

id The connection resource returned by . yaz_connect

type This parameter represents the query type - only is supported now in which case the third argument specifies a Type-1 query in prefix query notation. "rpn"

query The RPN query is a textual representation of the Type-1 query as defined by the Z39.50 standard. However, in the text representation as used by YAZ a prefix notation is used, that is the operator precedes the operands. The query string is a sequence of tokens where white space is ignored unless surrounded by double quotes. Tokens beginning with an at-character () are considered operators, otherwise they are treated as search terms. @

   You can find information about attributes at the 
   
   site.
  Z39.50 Maintenance Agency

Opmerking: > If you would like to use a more friendly notation, use the CCL parser - functions and . yaz_ccl_conf``yaz_ccl_parse

return.success

Voorbeeld: Query Examples

You can search for simple terms, like this:

which matches documents where "computer" occur. No attributes are 
specified.

computer

The query 

matches documents where "knuth donald" occur (provided that the
server supports phrase search).

"knuth donald"

This query applies two attributes for the same phrase.

First attribute is type 1 (Bib-1 use), attribute value is 1003
(Author).
Second attribute has is type 4 (structure), value 1 (phrase),
so this should match documents where Donald Knuth is author.

@attr 1=1003 @attr 4=1 "knuth donald"

The query

would in infix notation look like .

@and @or a b @not @or c d e

(a or b) and ((c or d) not e)

Another, more complex, one:

The query as a whole uses the GILS attributeset. The query matches
documents where  occur in the title (GILS,BIB-1)
and in which  occur as Distributor (GILS).

@attrset gils @and @attr 1=4 art @attr 1=2000 company

art``company