A broker schema is a symbol space that defines the scope of uniqueness of the names of resources defined within it. The resources are message flows, ESQL files, and mapping files.
The User Name Server is an optional runtime component that provides authentication of users and groups and give an administrative control over who can publish and who can subscribe operations.
The Windows Event Viewer is where WebSphere Message Broker writes records to the local system.
The mqsicreatemsgdefs command has a bulk import capability, but mqsicreatemsgdefsfromwsdl imports only one WSDL definition at a time.
The Sequence node enables you to receive groups of messages from an input source, and preserve the order in which the messages in each group arrived.
A message is put to a queue defined as Triggering.
External variables:
Normal Variables:
Shared variable:
The purpose of a filter node is to route a message based on the content dynamically
A correlation name is a field reference that identifies a well-defined starting point in the logical message tree and is used in field references to describe a standard part of the tree format.
Logical message tree is the internal representation of a message.
The Compute node is used to:
Use the Input node as an In terminal for an embedded message flow (a subflow).The MQInput node receives a message from a WebSphere MQ message queue that is defined on the queue manager of the broker. It is the first node of your message flow.
Use CALL keyword to call functions or methods.
Publish/subscribe is a style of messaging application in which the providers of information (publishers) are decoupled from the consumers of that information (subscribers).
A message flow node receives a message, performs a set of actions against the message, passes the original message or the changed message, to the next node in the message flow.
We can trform and enrich messages by using one or more of the following techniques:
Mappings
ESQL
Java
XSL style sheets
PHP
.NET
You can populate your message set with message definitions by importing COBOL copybook files, using either the New Message Definition File wizard or the mqsicreatemsgdefs command line utility.
An execution group is a named grouping of message flows that have been assigned to a broker.
Physical Representation of a message is a Format.
XML, TDS, CWF, EDI, SWIFT.
We can access a database from a message flow by using the following nodes:
Compute
Database
DatabaseInput
DatabaseRetrieve
DatabaseRoute
Filter
JavaCompute
Mapping
Using the “CALL” keyword.
A message set is a folder in a message set project that contains a logical grouping of your messages and the objects that comprise them (elements, types, groups).
Routing, Trformation and Integration.
ResetContentDescriptor node request to parse the message with different parser, leaving the message content unchanged.
A correlation name is a field reference referencing a well-defined starting point in the logical message tree and to describe a standard part of the tree format.
There are two types of clients in MQ:
The User Name Server is an optional runtime component that provides authentication of users and groups performing publish/subscribe operations.
Even if your messages are self-defining, and do not require modeling, message modeling has the following advantages:
ResetContentDescriptor node request to parse the message with different parser, leaving the message content unchanged.
The SOAP Async Request node sends a Web service request, but the node does not wait for the associated Web service response to be received. This asynchronous functionality enables multiple outbound requests to be made almost in parallel because the outbound request is not blocked waiting for the response.
Whereas, The SOAPRequest node is a synchronous request and response node, which blocks processing after sending the request until the response is received.
Most message formats are not self-defining, and a parser must have access to a predefined model that describes the message, if it is to parse the message correctly. A message model is used by WebSphere Message Broker to model a message format.
The mqsiapplybaroverride command is used to replace configurable values in the broker archive (BAR) with new values that you specify in a properties file.
Not a single queue manager cannot have two brokers.
Using the mqsideploy command one can deploy the bar files.
Administrator perspective is used to deploy the flow.
To Connect to the remote broker or local broker and to deploy the message flows onto the Broker.
You can create a message model by using the following methods:
mqsichangebroker command is used to modify broker parameters.
The main components used in Message Broker Name Server are
A message definition file contains the messages, elements, types, and groups which make up a message model within a message set. Every message set requires at least one message definition file to describe its messages. Message definition files use the XML Schema language to describe the logical format of one or more messages.
Group of brokers that coordinate a single configuration manager constitute a Broker Domain.
A multipart message contains one or more other messages within its structure. The contained message is sometimes referred to as an embedded message. A multipart message must contain a group, or a complex type, with its Composition property set to Message.
In Data Source specify the name by which the appropriate database is known on the system on which this message flow is to execute.
SCADAInput, HTTPInput, FileInput, Real-timeInput, JMSInput, Custom Input nodes.