IBM Integration Bus, Version 9.0.0.5 Operating Systems: AIX, HP-Itanium, Linux, Solaris, Windows, z/OS

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Terms and phrases

Parsers, messages, and message trees are so interconnected, that it is difficult to discuss one aspect without using terms and phrases from another. Therefore, this section introduces key words, terms, and phrases that are used throughout this document.

Table 1.
Term	Meaning	Further reading
Body folder	The Body folder is the last child of Root, and contains the message payload.
Domain	Each parser is suited to a particular class of messages (such as fixed-length binary, delimited text, or XML) known as a message domain. Each message that is to be processed by a message flow must be associated with a domain. A domain determines the parser that is used when parsing and serializing the message. Each domain is suited to a particular class of messages, and some domains support several different classes of message. The domain for an input message is typically specified on the input node of the message flow.
Folder	Folders are elements of the message tree under Root, such as Properties or Body.
Fragmentation	Fragmentation means that the memory heap has enough free space on the current heap, but has no contiguous blocks that are large enough to satisfy the current request.
Logical Tree	The logical tree structure is the internal (broker) representation of a message. It is also known as the Message Assembly.	For more information, see Logical tree structure.
Message Tree	A message tree is a structure that is created, either by one or more parsers when an input message bit stream is received by a message flow, or by the action of a message flow node	For more information, see The message tree structure.
On-Demand Parsing	On-demand parsing, also referred to as partial parsing, is used to parse an input message bit stream only as far as is necessary to satisfy the current reference.	For more information, see Parsing on demand.
Opaque Parsing	For XMLNSC messages, you can use Opaque parsing: A technique that allows the whole of an XML sub tree to be placed in the message tree as a single element. You can use opaque parsing where you do not need to access the elements of the subtree.	For more information, see Opaque parsing.
Partial Parsing	Partial parsing, also referred to as on-demand parsing, is used to parse an input message bit stream only as far as is necessary to satisfy the current reference.	For more information, see Parsing on demand.
Root	The root of a message tree is called Root. The last element beneath the root of the message tree is always the message body.	For more information, see Message tree structure.
Serialization	When an output message is created in a message flow, the message tree must be converted back into an actual message bitstream. This conversion is done by the parser and the process is referred to as serialization of the message tree. The creation of the output message is a simpler process than reading an incoming message.

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Last updated: 2016-08-12 11:20:24