HP e-Commerce / XML director server appliance sa8250 - Users Guide

C H A P T E R 2 Server Configuration Options
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Order of RICH expressions
When using expressions in Layer 7 (RICH) operations, the order of
expressions is significant only when the not (!) operator is used.
Expressions are described in this table.
Three rules for expressions:
• The “*” and “!” are allowed in RICH expressions, but they can
only exist at the beginning or end of the expression.
• A positive RICH expression is required after a negative RICH
expression, otherwise the negative expression has no effect.
• Negative RICH expressions can be used alone, but not in XML
patterns.
Expression Yields
!*.gif
All non-GIF files
*.jpg
All JPG files
!/home/*
No matches
Order of Expressions