Advanced MQAI topics

Information on indexing, data conversion and use of message descriptor

Indexing

Indexes are used when replacing or removing existing data items from a bag to preserve insertion order.

Data conversion

The strings contained in an MQAI data bag can be in a variety of coded character sets and these can be converted using the mqSetInteger call.

Use of the message descriptor

The MQAI generates a message descriptor which is set to an initial value when the data bag is created.

• Indexing in the MQAI
  Indexes are used when replacing or removing existing data items from a bag. There are three types of indexing, which allows data items to be retrieved easily.
• Data conversion processing in the MQAI
  The strings contained in an MQAI data bag can be in a variety of coded character sets. These strings can be converted using the mqSetInteger call.
• Use of the message descriptor in the MQAI
  The message descriptor that the MQAI generates is set to an initial value when the data bag is created.

Parent topic: Use the MQAI to simplify the use of PCFs