WebSphere MQ topic settings

 

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Use this panel to browse or change the configuration properties of the selected JMS topic destination for publish/subscribe messaging with WebSphere MQ as a messaging provider.

A WebSphere MQ topic destination is used to configure the properties of a JMS topic for WebSphere MQ as a messaging provider. Connections to the topic are created by the associated topic connection factory. To view this page, use the console to complete the following steps:

  1. In the navigation pane, expand...

    Resources | JMS Providers | WebSphere MQ

  2. If appropriate, in the content pane, change the scope of the WebSphere MQ messaging provider. If the scope is set to node or server scope for a Version 5 node, the console presents the subset of resources and properties that are applicable to WAS V5.

  3. In the content pane, under Additional Resources, click...

    WebSphere MQ Topic Destinations

    This displays a list of any existing JMS topic destinations.

  4. Click the name of the JMS topic destination to work with.

A WebSphere MQ topic has the following properties.

Name

The name by which the topic is known for administrative purposes within IBM WAS.

Data type String

JNDI name

The JNDI name that is used to bind the topic into the name space.

As a convention, use the fully qualified JNDI name; for example, in the form jms/Name, where Name is the logical name of the resource.

This name is used to link the platform binding information. The binding associates the resources defined by the deployment descriptor of the module to the actual (physical) resources bound into JNDI by the platform.

Data type String

Description

A description of the topic, for administrative purposes within IBM WAS.

Data type String
Default Null

Category

A category used to classify or group this topic, for your IBM WebSphere Application Server administrative records.

Data type String

Persistence

Whether all messages sent to the destination are persistent, non-persistent, or have their persistence defined by the application

Data type Enum
Default APPLICATION DEFINED
Range

APPLICATION DEFINED

Messages on the destination have their persistence defined by the application that put them onto the destination.

QUEUE DEFINED

Messages on the destination have their persistence defined by the WebSphere MQ destination definition properties.

PERSISTENT

Messages on the destination are persistent.

NON PERSISTENT

Messages on the destination are not persistent.

Priority

Whether the message priority for this destination is defined by the application or the Specified Priority property

Data type Enum
Default APPLICATION DEFINED
Range

APPLICATION DEFINED

The priority of messages on this destination is defined by the application that put them onto the destination.

QUEUE DEFINED

Messages on the destination have their persistence defined by the WebSphere MQ queue definition properties.

SPECIFIED

The priority of messages on this destination is defined by the Specified Priority property. If you select this option, define a priority on the Specified Priority property.

Specified priority

If the Priority property is set to Specified, type here the message priority for this destination, in the range 0 (lowest) through 9 (highest)

Data type Integer
Units Message priority level
Default 0
Range 0 (lowest priority) through 9 (highest priority)

Expiry

Whether the expiry timeout for this destination is defined by the application or the Specified Expiry property, or messages on the queue never expire (have an unlimited expiry timeout)

Data type Enum
Default APPLICATION DEFINED
Range

APPLICATION DEFINED

The expiry timeout for messages on this destination is defined by the application that put them onto the destination.

SPECIFIED

The expiry timeout for messages on this destination is defined by the Specified Expiry property. If you select this option, define a timeout on the Specified Expiry property.

UNLIMITED

Messages on this destination have no expiry timeout, so those messages never expire.

Specified expiry

If the Expiry Timeout property is set to Specified, type here the number of milliseconds (greater than 0) after which messages on this destination expire.

Data type Integer
Units Milliseconds
Default 0
Range Greater than or equal to 0

  • 0 indicates that messages never timeout

  • Other values are an integer number of milliseconds

Base topic name

The name of the WebSphere MQ topic to which messages are sent.

Data type String
Range Depends on the broker used. For details, see the documentation for your broker; for example the WebSphere MQ Event Broker library at http://www-3.ibm.com/software/ts/mqseries/library/manualsa/manuals/wsmqebv21.html.

CCSID

The coded character set identifier for use with WebSphere MQ.

This coded character set identifier (CCSID) must be one of the CCSIDs supported by WebSphere MQ.

Data type String
Units Integer
Default Null
Range 1 through 65535

For more information about supported CCSIDs, and about converting between message data from one coded character set to another, see the WebSphere MQ System Administration and the WebSphere MQ Application Programming Reference books. These are available from the WebSphere MQ messaging multiplatform and platform-specific books Web pages; for example, at http://www-3.ibm.com/software/ts/mqseries/library/manualsa/manuals/platspecific.html, the IBM Publications Center, or from the WebSphere MQ collection kit, SK2T-0730.

Use native encoding

Whether or not the destination should use native encoding (appropriate encoding values for the Java platform).

Data type Check box
Units Not applicable
Default Cleared
Range

Cleared

Native encoding is not used, so specify the properties below for integer, decimal, and floating point encoding.

Selected

Native encoding is used (to provide appropriate encoding values for the Java platform).

For more information about encoding properties, see the WebSphere MQ Use Java document.

Integer encoding

If native encoding is not enabled, select whether integer encoding is normal or reversed.

Data type Enum
Default NORMAL
Range

NORMAL

Normal integer encoding is used.

REVERSED

Reversed integer encoding is used.

For more information about encoding properties, see the WebSphere MQ Use Java document.

Decimal encoding

If native encoding is not enabled, select whether decimal encoding is normal or reversed.

Data type Enum
Default NORMAL
Range

NORMAL

Normal decimal encoding is used.

REVERSED

Reversed decimal encoding is used.

For more information about encoding properties, see the WebSphere MQ Use Java document.

Floating point encoding

If native encoding is not enabled, select the type of floating point encoding.

Data type Enum
Default IEEENORMAL
Range

IEEENORMAL

IEEE normal floating point encoding is used.

IEEEREVERSED

IEEE reversed floating point encoding is used.

S390

S390 floating point encoding is used.

For more information about encoding properties, see the WebSphere MQ Use Java document.

Target client

Whether the receiving application is JMS-compliant or is a traditional WebSphere MQ application

Data type Enum
Default JMS
Range

JMS

The target is a JMS-compliant application.

MQ

The target is a non-JMS, traditional WebSphere MQ application.

Broker durable subscription queue

The name of the broker's queue from which durable subscription messages are retrieved

The subscriber specifies the name of the queue when it registers a subscription.

Data type String
Default Null
Range 1 through 48 ASCII characters

Broker CC durable subscription queue

The name of the broker's queue from which durable subscription messages are retrieved for a ConnectionConsumer. This property applies only for use of the Web container.

Data type String
Default Null
Range 1 through 48 ASCII characters

Enable multicast

Whether or not this topic destination uses multicast transport.

With multicast, messages are delivered to all consumers. This is useful in environments where there are a large number of clients that all want to receive the same messages, because with multicast only one copy of each message is sent. Multicast reduces the total amount of network traffic. Reliable multicast is standard multicast with a reliability layer added.

Data type Enum
Default NOTUSED
Range

NOTUSED

This destination does not use multicast transport.

ENABLED

This destination uses multicast transport, but does not provide a reliable multicast connection.

ENABLED_IF_AVAILABLE

This destination uses multicast transport if the message broker supports it.

ENABLED_RELIABLE

This destination uses reliable multicast transport

ENABLED_RELIABLE_IF_AVAILABLE

This destination uses reliable multicast transport if the message broker supports it.

 

Configuration tab

Scope

Level to which this resource definition is visible to applications.

Resources such as messaging providers, namespace bindings, or shared libraries can be defined at multiple scopes, with resources defined at more specific scopes overriding duplicates which are defined at more general scopes.

The scope displayed is for information only, and cannot be changed on this panel. To browse or change this resource (or other resources) at a different scope, change the scope on the messaging provider settings panel, then click Apply, before clicking the link for the type of resource.

Data type String



 

Related tasks


Configure a JMS topic connection factory for WebSphere MQ

 

Reference topic