Oracle Commerce Guided Search - EXPRNODE

EXPRNODE

An EXPRNODE element provides a generic way of sending a variety of information to an EXPRESSION. The information could be descriptions, data types, constant values (parameters), and so on. Comparatively speaking, this information is similar to a parameter for a function.

DTD

<!ELEMENT EXPRNODE (EXPRNODE*)>
<!ATTLIST EXPRNODE
    NAME    CDATA   #REQUIRED
    VALUE   CDATA   #IMPLIED
>

Attributes

The following points describe the EXPRNODE element's attributes.

NAME - Describes the EXPRNODE element. Because EXPRNODE can be so broadly used to modify an expression, the NAME attribute varies in relation to the expression that it modifies. For example, NAME can specify a variety of values such as TYPE, NAME, OPERATOR, AUTO_GEN, OPERATION, and so on. See an expression's help topic for details about how the NAME attribute of an expression node modifies an expression.
VALUE - Provides a value that corresponds to the NAME attribute. Because EXPRNODE can be so broadly used, the VALUE attribute can specify a variety of values. For example, INTEGER may correspond to TYPE; SUM may correspond to NAME; ADD may correspond to OPERATOR and so on. See an expression's help topic for details about how the VALUE attribute of an expression node modifies an expression.

Sub-elements

The EXPRNODE element can contain additional EXPRNODE elements as sub-elements.

Example

This example shows an expression adding a dimension value ID to the current record. The second and third expressions use EXPRNODE to provide name and value information for the parent EXPRESSION.

<EXPRESSION NAME="ADD_DVAL" TYPE="VOID">
   <EXPRESSION NAME="MATCH" TYPE="DVAL">
      <EXPRNODE NAME="DIMENSION_ID" VALUE="9"/>
      <EXPRESSION NAME="IDENTITY" TYPE="PROPERTY">
         <EXPRNODE NAME="PROP_NAME" VALUE="P_Score"/>
      </EXPRESSION>
   </EXPRESSION>
</EXPRESSION>

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