Use the modifyWMQTopic command to change
certain parameters of a WebSphere® MQ messaging provider
topic.
To run the command, use the AdminTask object of the wsadmin
scripting client.
The wsadmin scripting client is run
from Qshell. For more information, see the topic "Configure Qshell
to run WebSphere Application
Server scripts".
This command is valid only when it is used with WebSphere Application Server
Version 7 and later application servers. Do not use it with earlier
versions.
For a list of the available WebSphere MQ messaging provider administrative
commands, plus a brief description of each command, enter the following
command at the wsadmin prompt:
print AdminTask.help('WMQAdminCommands')
For overview help on a given command, enter the following
command at the wsadmin prompt:
print AdminTask.help('command_name')
After using the command, save your changes to the master
configuration. For example, use the following command:
AdminConfig.save()
Purpose
Use the modifyWMQTopic command
to modify a WebSphere MQ messaging provider topic defined
at the scope at which the command is issued.
Note: You cannot change
the name of an topic.
Target object
A WebSphere MQ
messaging provider topic at the specific scope.
Required parameters
The parameters for this
command are identical to those used to create a WebSphere MQ
messaging provider topic.
Optional parameters
The parameters for this
command are identical to those used to create a WebSphere MQ
messaging provider topic.
Note the behavior
of this command on the -customProperties parameter.
- -customProperties
- This parameter specifies custom properties to be passed to the WebSphere MQ messaging provider topic implementation.
Typically, custom properties are used to set attributes of the topic
that are not directly supported through the WebSphere administration
interfaces.
Each custom property is specified using name and
value table step parameters. Since these are table steps, the order
of the two parameters is fixed, so you must always specify the name
first and the value second:
- In Jython: [name value]
- In Jacl: {name value}
New
name/value pairs are added to the existing set of custom properties
using the following rules:
- If the existing set of properties does not contain a property
with the same name as that supplied as part of a modify command, the
supplied property is added to the set of custom properties, unless
the custom property has no value specified, when it is disregarded.
- If the existing set of properties contains a property with the
same name as that supplied as part of a modify command, and the modify
command also specifies a value for the property, the existing value
is replaced by the supplied value.
- If the existing set of properties contains a property with the
same name as that supplied as part of a modify command, but the modify
command does not specify a value for the property, the property with
the same name is deleted from the existing set of custom properties.
Example
- Using Jython:
wsadmin>AdminTask.modifyWMQTopic("t1(cells/L3A3316Node04Cell/
nodes/L3A3316Node05|resources.xml#MQTopic_1204538835312)", ["-priority 7"])
t1(cells/L3A3316Node04Cell/nodes/L3A3316Node05|resources.xml#
MQTopic_1204538835312)
- Using Jacl:
wsadmin>$AdminTask modifyWMQTopic
t1(cells/L3A3316Node04Cell/nodes/L3A3316Node05|resources.xml#
MQTopic_1204538835312) {-priority 7}
t1(cells/L3A3316Node04Cell/nodes/L3A3316Node05|resources.xml#
MQTopic_1204538835312)