netui-data:choiceMethod Tag

<netui-data:choiceMethod> Tag

The <netui-data:choiceMethod> tag invokes a decision method on the basis of which a particular <netui-data:choice> tag is rendered.

Syntax

<netui-data:choiceMethod
    [failOnError="boolean_failOnError"]
    [method="string_method"]
    [object="string_object"]
    [resultId="string_resultId"] />

Description

The <netui-data:choiceMethod> tag invokes a decision method on the basis of which a particular <netui-data:choice> tag is rendered. The <netui-data:choiceMethod> tag makes its decision by invoking a method on an object. (Parameters are passed to the method from nested <netui-data:methodParameter> tags. The value of each of these parameters may be taken from the "current" data item using the expression {container.item...}.)

Attributes

failOnError

Boolean. If set to true, any errors occuring while invoking the control method will be be reported in-line on the JSP page.

Required	Supports runtime expression evaluation	Data bindable
No	No	No

method

The name of the method to invoke

Required	Supports runtime expression evaluation	Data bindable
No	No	No

object

The object which contains the method to invoke.

Required	Supports runtime expression evaluation	Data bindable
No	No	Yes

resultId

The data returned by the method is loaded into the PageContext object, under this property name.

Required	Supports runtime expression evaluation	Data bindable
No	No	No

Sample

In the following example, the <netui-data:choiceMethod> tag calls the isItemsOnSale method, which returns a boolean value. If the return value is true, then the contents of the <netui-data:choice value="true"> tag are rendered; if the return value is false, then the contents of the <netui-data:choice value="false"> tag are rendered.

          <netui-data:repeaterItem>
             <netui-data:choiceMethod object="{pageFlow}" method="isItemOnSale">
                 <netui-data:methodParameter value="{container.item.quantityavailable}"/>
             </netui-data:choiceMethod>
             <netui-data:choice value="true">
                 <tr class="row" bgcolor="#FF9999">
                     <td><netui:label value="{container.item.itemnumber}"/></td>
                     <td><netui:label value="{container.item.itemname}"/></td>
                     <td><netui:label value="{container.item.quantityavailable}"/></td>
                     <td><netui:label value="{container.item.price}"/> Clearance Item</td>
                  </tr>
             </netui-data:choice>
             <netui-data:choice value="false">
                 <tr class="row">
                     <td><netui:label value="{container.item.itemnumber}"/></td>
                     <td><netui:label value="{container.item.itemname}"/></td>
                     <td><netui:label value="{container.item.quantityavailable}"/></td>
                     <td><netui:label value="{container.item.price}"/></td>
                 </tr>
             </netui-data:choice>
          </netui-data:repeaterItem>

Sample Code