collection() ➔ item()*

Returns a sequence of items making up the default collection.

There are no arguments



collection($arg as xs:string?) ➔ item()*

Returns a sequence of items making up the collection whose URI is supplied.





The supplied collection URI





Links to W3C specifications

XPath 2.0 Functions and Operators

XPath 3.0 Functions and Operators

XPath 3.1 Functions and Operators

Notes on the Saxon implementation

Saxon implements the zero-argument function by passing a null URI to the registered CollectionURIResolver. The default CollectionURIResolver implementation supplied with the product handles this by returning an empty sequence, but a user-supplied CollectionURIResolver is free to handle this case any way it wishes.

If a user-defined CollectionURIResolver has been registered, the action of this function is entirely user-defined. A resolver may be registered using the setCollectionResolver() method on the Configuration object, or (in XSLT) using setAttribute() on the TransformerFactory. The CollectionURIResolver may also be nominated using the -cr option on the command line.

For details of the behavior of the standard CollectionURIResolver, see Collections.

The collection() function is multi-threaded in Saxon-EE (since 9.5). Each document in the collection is parsed in a separate thread, and the documents are processed in the order in which parsing completes. This makes the order of the documents unpredictable.