< netui-data:repeater? dataSource ="{pageFlow.customerList}" >

???? < netui-data:repeaterHeader >< table? cellpadding ="4" ?border ="1"

????????class ="tablebody" ? ></ netui-data:repeaterHeader >

???? < netui-data:repeaterItem >

???????? < netui-data:choiceMethod? object ="{pageFlow}"

??????????????method ="getRollerState" >

???????????? < netui-data:methodParameter? value ="{container.item[1]}" />

???????? </ netui-data:choiceMethod >

???????? < netui-data:choice? value ="low" >

???????????? < tr? bgcolor ='#00FF00' >

???????????????? < td >< netui:label? value ="{container.item[0]}" >

?????????????????????? </ netui:label ></ td >

???????????????? < td >< netui:label? value ="{container.item[1]}" >

?????????????????????? </ netui:label ></ td >

???????????? </ tr >

???????? </ netui-data:choice >

???????? < netui-data:choice? value ="high" >

????????????? < tr? bgcolor ='#FF0000' >

???????????????? < td >< netui:label? value ="{container.item[0]}" >

?????????????????????? </ netui:label ></ td >

???????????????? < td >< netui:label? value ="{container.item[1]}" >

?????????????????????? </ netui:label ></ td >

???????????? </ tr >

???????? </ netui-data:choice >

???? </ netui-data:repeaterItem >

???? < netui-data:repeaterFooter ></ table ></ netui-data:repeaterFooter >

</ netui-data:repeater >


The? < netui-data:choiceMethod > ?tag?specifies?the?Java?method?that?calculates?the?data?value.?The?method?is?determined?by?setting?the?tag's?object?and?method?attributes.?The?object?attribute?specifies?the?data?binding?context?(the?available?options?are?discussed?in?Chapter?4?in?the?section?"Data?Binding?with?Page?Flow").?In?this?case,?the?container?data?binding?context?refers?to?the?data?record?in?the?current?iteration.?Data?is?passed?into?the?Java?method?via?a?number?of?nested? < netui-data:methodParameter > ?tags,?one?for?each?parameter?of?the?Java?method.?Listing?7.4?shows?the?getRollerState()?method?in?the?Controller.jpf?file?used?in?the?Casino?example.?The?method?simply?returns?a?value?of?high?if?the?number?of?purchased?chips?is?greater?than?1,000;?otherwise,?it?returns?low.

Listing?7.4.?Excerpt?from?Controller.jpf?Showing?the?Business?Logic?Used?to?Color-Code?Customers

public?String?getRollerState(String?chipsPurchased)

{

????int?chips?=?Integer.parseInt(chipsPurchased);

????if?(chips?>?1000)

????????return?"high";

????else

????????return?"low";

}

?