Rule - Condition

Condition Property window

You can set the condition corresponding to the Rule activity in this property window. To open this window, click the button for the 'Condition' property.

The window has a set of drop downs at the top to select the different parameters required to build an expression for the condition. You can also find related buttons next to the drop downs.

• The first Value type drop down - You can select the type of value that will form the left-hand side the rule condition expression, in this drop down. You can select "Variable", "Content", or "XMLVariables" from this drop down.

• The first Value drop down - You can specify the actual value corresponding to the value type selected in the preceding drop down. This drop down will have the variable collection or content collection or XMLVariables collection from which you can select an appropriate option.

• The Operator drop down - You can select the operator for the expression here. E.g., "=", "<=", "IN", "Contains".

• The second Value type drop down - You can select the type of value to be matched with the value specified in the left-hand side of the expression. You can specify Variable, Content, Value, or XMLVariables here.

• The Value text box/ drop down - You can specify the actual value to assign to the attribute. The control displayed depends on the option selected in the preceding drop down. If you had selected "Value", it will display a text box here. You can enter a discrete value in this box to complete the expression. If you had selected "Variable", "Content", or "XMLVariables" instead, there will be a drop down instead of the field. This drop down will have the variable collection or content collection or XMLVariables collection from which you can select an appropriate option.

• The Logical operator drop down - You can select logical operators from this drop down to build compound expressions. The options available are "End", "And", "Or", "')' And", and "')' Or". You can select "End" to complete the expression.

• Add - You can click this button to add the new expression to the text area.

• Undo - You can click this button to remove a condition you have added to the expression.

At the bottom of the window you will find the following buttons:

• Clear - You can click this button to clear the expression shown in the text area. This is useful when you want to build a new expression.

• Update - You can click this button to save the expression that has been added to the text area.