MarkLogic 12 EA 2 Product Documentationxdmp.setServerField
xdmp.setServerField( name as String, value as Sequence ) as Sequence
Summary
Sets the value of a named server field. A server field is created with
xdmp.setServerField
and stores a name/value
pair in memory. The server field is available on the App Server in which
it is set on the host in which the App Server runs, via
xdmp.getServerField;
a server field that is set on one
App Server is not available on other App Servers on that host or on the same
App Server running on another host.
| Parameters | |
|---|---|
| name | The name of the server field. |
| value | The value of the server field. If you pass in a single value, it is treated as a Sequence with that single item; therefore, if you pass in an array, the array is treated as a single value (not as one value for each item in the array). If you mean to pass in the values of each item in the array, then you can call xdmp.arrayValues on the array. |
Required Privileges
http://marklogic.com/xdmp/privileges/xdmp-set-server-field
Usage Notes
If you use a server field with the system Plugin Framework (by placing
the
xdmp.setServerField
code in a main module under
the Plugins directory on a host), then the server field
will be populated for each App Server on the host before the first request
against each App Server is run.
If you set a server field to the empty sequence, it deletes
the server field and it will not appear when you run
xdmp.getServerFieldNames.
If you set a session or server field to a value that comes from a
database node (for example, from the value of a search or the
fn.doc function),
then that session or server field expires
after the request time limit (10 minutes by default). These fields expire
because they contain references to stands in the database, and as long as
those references exist the stand cannot be reclaimed (merged). To keep
such a node in a session or server field, make a copy of the node
before adding it to the session or server field instead of using the node
directly from the database.
Example
xdmp.setServerField("foo", "bar");
=> "bar"
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