18 Mar 2010 19:59:09 UTC
- Distribution: SOAP-Transport-MQ
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MQSeries Transport backend for SOAP::Lite
This class provides implementations of both client and server frameworks built on IBM's Message Queue set of classes. The SOAP objects encapsulate additional objects from these classes, creating and using them behind the scenes as needed.
Inherits from: SOAP::Client.
The client class provides two methods specific to it, as well as specialized versions of the endpoint and send_receive methods. It also provides a localized new method, but the interface isn't changed from the superclass method. The new methods are:
$client->requestqueue->Put(message => $request);
Manages the MQSeries::Queue object the client uses for enqueuing requests to the server. In general, an application shouldn't need to directly access this attribute, let alone set it. If setting it, the new value should be an object of (or derived from) the MQSeries::Queue class.
Manages the queue object used for receiving messages back from the designated server (endpoint). It is also primarily for internal use, though if the application needs to set it explicitly, the new value should be an object of (or derived from) the MQSeries::Queue class.
The two previous methods are mainly used by the localized versions of the methods:
This accessor method has the same interface as other similar classes but is worth noting for the internal actions that take place. When the endpoint is set or changed, the method creates a queue-manager object (from the MQSeries::QueueManager class) and references this object when creating queues for replies and requests using the methods described earlier. The URI structure used with these classes (strings beginning with the characters mq://user@host:port) contains the information needed for these operations.
This method uses the same interface as other classes, but makes use of only the endpoint and envelope keys in the hash-table input data. The endpoint key is needed only if the client wishes to switch endpoints prior to sending the message. The message (the value of the envelope key) is inserted into the queue stored in the requestqueue attribute. The client then waits for a reply to the message to appear in the queue stored in the replyqueue attribute.
Inherits from: SOAP::Server.
The server class also defines requestqueue and replyqueue methods under the same terms as the client class. Of course, the server reads from the request queue and writes to the reply queue, the opposite of the client's behavior. The methods whose functionality are worth noting are:
- new(URI, optional parameters)
When called, the constructor creates the MQSeries::QueueManager object and the two MQSeries::Queue objects, similar to what the client does inside its endpoint method. Like the Jabber server described earlier, the first argument to this constructor is expected to be the URI that describes the server itself. The remainder of the arguments are treated as key/value pairs, as with other class constructors previously described.
When this method is called, it attempts to read a pending message from the request-queue stored on the requestqueue attribute. The message itself is passed to the handle method of the superclass, and the result from that operation is enqueued to the replyqueue object. This process loops until no more messages are present in the request queue. The return value is the number of messages processed. The reads from the request queue are done in a nonblocking fashion, so if there is no message pending, the method immediately returns with a value of zero.
This module is currently unmaintained, so if you find a bug, it's yours - you probably have to fix it yourself. You could also become maintainer - just send an email to email@example.com
Paul Kulchenko (firstname.lastname@example.org)
Randy J. Ray (email@example.com)
Byrne Reese (firstname.lastname@example.org)
Martin Kutter (email@example.com)
Module Install Instructions
To install SOAP::Transport::MQ, copy and paste the appropriate command in to your terminal.
perl -MCPAN -e shell install SOAP::Transport::MQ
For more information on module installation, please visit the detailed CPAN module installation guide.
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