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e-docs > Tuxedo > File Formats, Data Descriptions, MIBs, and System Processes Reference > Section 5 - File Formats, Data Descriptions, MIBs, and System Processes Reference |
File Formats, Data Descriptions, MIBs, and System Processes Reference
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Overview
The T_APPQMSG class represents messages stored in application queues. A message is not created by an administrator; instead, it comes into existence as a result of a call to tpenqueue(). A message can be destroyed either by a call to tpdequeue() or by an administrator. In addition, certain attributes of a message can be modified by an administrator. For example, an administrator can move a message from one queue to another queue within the same queue space or change its priority.
Limitations
It is not possible to retrieve all instances of this class by leaving all key fields unset. Instead, sufficient key fields must be supplied to explicitly target a single application queue space. These required key fields are TA_APPQSPACENAME, TA_QMCONFIG, and TA_LMID, except when the application is unconfigured (that is, the TUXCONFIG environment variable is not set), in which case TA_LMID must be omitted. For example, if the TA_APPQSPACENAME, TA_QMCONFIG, and TA_LMID attributes are set in a request using tpcall(), all T_APPQMSG objects in all queues of the specified queue space will be retrieved.
Attribute Table
Attribute Semantics
aAll attributes of class T_APPQMSG are local attributes.
bTA_LMID must be specified as a key field except when the application is unconfigured (that is, the TUXCONFIG environment variable is not set).
cAll operations on T_APPQMSG objects—both GET and SET—silently open the associated queue space (that is, implicitly set the state of the queue space to OPEn if it is not already OPEn or ACTive). This may be a time-consuming operation if the queue space is large.
dSufficient key fields must be supplied in a GET operation to explicitly target a single application queue space.
TA_HIGHPRIORITY: 1 <= num <= 100
TA_MSGEXPIREENDTIME:
TA_MSGENDTIME:
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