Hp e-CommerceXML Accelerator sa7150 Manuel d'utilisateur Page 32

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C H A P T E R 3 HP e-Commerce/XML Server Accelerator SA7150 User Guide
22
Comparison operators allow the SA7150 to look for specific values
in the XML data tree and compare them with corresponding values in
your preconfigured XML patterns. An XML pattern might look like
this:
URI Expression: */hr.asp
XML Expression: //address[zip > 90000]
Because the server to which the XML pattern belongs is configured
for zip codes greater than 90000 (as defined in the XML expression
component of the XML pattern), and John K. Smiths zip code is
92128, the SA7150 sends his employee data to that server. The
following table contains the available comparison operators
Attributes
Attributes are identified by the at sign (@). You can specify an
attribute as
@<AttributeName>, or use @* to select any attribute
relative to the context node.
Comparison
Operator
Name Description
=
Equal to Returns true if any values of the nodes specified in the pattern
equals given value
!=
Not equal to Returns true if at least one value of the nodes specified in the
patterns does not equal given value
<
Less than Returns true if at least one value of the nodes specified in the
patterns is less than the specified value
<=
Less than or
equal to
Returns true if at least one value of the nodes specified in the
patterns is less than or equal to the specified value
>
Greater than Returns true if at least one value of the nodes specified in the
patterns is greater than the specified value
>=
Greater than
or equal to
Returns true if at least one value of the nodes specified in the
patterns is greater than or equal to the specified value
XML Comparison Operators
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