Parsing a complex flat file may fail in BizTalk Server 2006 and in BizTalk Server 2004 (884622)

<b:schemaInfo parser_optimization="complexity" lookahead_depth="0"/> 

MORE INFORMATION

BizTalk Server has the following two modes for the algorithm to parse a flat file into XML:

• "speed"
• "complexity"

By default, the setting for the parser_optimization property is "speed." This setting is optimized to decrease parsing time. The "speed" setting can handle most flat files but cannot deal with all the ambiguities that the "complexity" setting can. The "complexity" mode is not quick but can handle a wider range of ambiguities.

There are five properties that cannot be changed in the BizTalk Server 2004 user interface. The following table lists the flat file node properties:

Property	Values	Default value	Description
suppress_empty_nodes	true or false	false	Indicates whether to remove empty XML nodes after the parser generates XML instance data.
generate_empty_nodes	true or false	true	Generates empty nodes for records that exist in the XML instance data.
parser_optimization	speed or complexity	speed	Optimizing for speed decreases the parsing time at the cost of dealing with some ambiguities in data. Optimizing for complexity handles a wider range of ambiguities at the cost of processing speed.
lookahead_depth	Any positive integer. A value of 0 (zero) indicates infinite lookahead.	3	Indicates how far to look ahead for matching data.
allow_early_termination	true or false	false	Indicates whether positional records can terminate early (true) or must contain data for all record fields (false).

Note If you set the allow_early_termination property to true, early termination of a positional record is permitted in cases where the right-most or outermost field is less than its defined length.