Disable an outputlink coming from database based on condition - jsf

Question

I am developing an app where I have come across at the condition where I am fetching some links from database, based on those links more retrieval is being done. I want to disable the outputlink if there is an empty row retrieved based on this outputlink.
I am swtting preRequisiteNull with boolean result and rendering the outputlink in primefaces but it disappear when if only one row have true value.
My Code:
for(LabOrdersDTO laborderDto:labOrdersDTOListDataModel.getWrappedData())
{
System.out.println("Speciman Name"+laborderDto.getTest());
System.out.println(laborderDto.getLabNo());
for(LabOrdersDTO laborderDto2:labTestPreReqList.getWrappedData())
{
System.out.println("Lab test"+laborderDto2.getTest());
if(laborderDto2.getTestPreReq()!=null){
preRequisiteNull = false;
}else{
preRequisiteNull = true;
}
}
}

Answer 1

if i understand you correctly, then your mistake is in your for-loops.
you want to disable link if one link = null ? right?
if yes then you have to breake the loop if one link is null, otherwise the next notNull link will override the value.
replace this:
for(LabOrdersDTO laborderDto:labOrdersDTOListDataModel.getWrappedData())
{
for(LabOrdersDTO laborderDto2:labTestPreReqList.getWrappedData())
{
if(laborderDto2.getTestPreReq()!=null){
preRequisiteNull = false;
}else{
preRequisiteNull = true;
}
}
}
width this :
for(LabOrdersDTO laborderDto:labOrdersDTOListDataModel.getWrappedData())
{
for(LabOrdersDTO laborderDto2:labTestPreReqList.getWrappedData())
{
if(laborderDto2.getTestPreReq()==null){
preRequisiteNull = true;
// update the link state or no idea how you manage it to disable the link
break;
}
}
}
BUT i cannot see how you set the link state to be disabled. my suggestion will break if one row is empty, but you have to update the state of that link!