Function.yaz-sort

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yaz_sort — Sets sorting criteria

Inhaltsverzeichnis 1 Beschreibung 2 Parameter-Liste 3 Rückgabewerte 4 Beispiele

Beschreibung

void yaz_sort ( resource $id , string $criteria )

This function sets sorting criteria and enables Z39.50 Sort. Call this function before yaz_search(). Using this function alone does not have any effect. When used in conjunction with yaz_search(), a Z39.50 Sort will be sent after a search response has been received and before any records are retrieved with Z39.50 Present (yaz_present().

Parameter-Liste

id

• The connection resource returned by yaz_connect().

criteria

• A string that takes the form field1 flags1 field2 flags2 where field1 specifies the primary attributes for sort, field2 seconds, etc.. The field specifies either a numerical attribute combinations consisting of type=value pairs separated by comma (e.g. 1=4,2=1)  ; or the field may specify a plain string criteria (e.g. title. The flags is a sequence of the following characters which may not be separated by any white space. Sort Flags a Sort ascending

d Sort descending i Case insensitive sorting s Case sensitive sorting

Rückgabewerte

Es wird kein Wert zurückgegeben.

Beispiele

Beispiel #1 Sort Criterias To sort on Bib1 attribute title, case insensitive, and ascending you would use the following sort criteria: 1=4 ia If the secondary sorting criteria should be author, case sensitive and ascending you would use: 1=4 ia 1=1003 sa