VOID expressions return no value but are used to
perform other work. The
VOID UPDATE expression changes the value of a property.
The name of the property to update is given in a
PROP_NAME expression node, and the new value is given
in a sub-expression of type
INTEGER,
FLOAT,
STRING, or
PROPERTY. If the property has multiple values, all
values are changed.
See the
EXPRESSION element for DTD and attribute information.
This example updates records with the
Endeca.Document.Body property by replacing "cwd" in
paths with the actual current working directory.
<EXPRESSION TYPE="VOID" NAME="UPDATE">
<EXPRNODE NAME="PROP_NAME" VALUE="Endeca.Document.Body"/>
<EXPRESSION TYPE="STRING" NAME="REPLACE">
<EXPRNODE NAME="TARGET" VALUE="[cwd]"/>
<EXPRNODE NAME="REPLACEMENT" VALUE="&cwd;"/>
<EXPRESSION TYPE="PROPERTY" NAME="IDENTITY">
<EXPRNODE NAME="PROP_NAME" VALUE="Endeca.Document.Body"/>
</EXPRESSION>
</EXPRESSION>
</EXPRESSION>
