[b]QuantExperimentEdit.xhtml:[/b]
-------------------------
<s:link action="#{quantExperimentHome.removeReagentLink}"
  value="Remove Reagent">
<f:param name="hashcode" value="#{info.hashCode()}"/>
</s:link>

<h:commandButton id="update"
  value="Update Experiment"
action="#{quantExperimentHome.update}"
rendered="#{quantExperimentHome.managed}"/>

[b]QuantExperimentHome.java[/b]
------------------------
public String removeReagentLink(){
javax.faces.context.FacesContext facesContext = (new org.jboss.seam.faces.FacesContext()).getContext();
javax.servlet.http.HttpServletRequest hsr=(javax.servlet.http.HttpServletRequest)facesContext.getCurrentInstance().getExternalContext().getRequest();
String reagentHashcode=hsr.getParameter("hashcode");
   Reagent[] reagentNew=null;
   if(reagent1==null || reagent1.length==1){
  //Added for "At least one reagent is required to create a Project" validation
  return "fail";
}else{
  reagentNew=new Reagent[reagent1.length-1];
}
int j=0;
for(int i=0;i<reagentNew.length;i++){
     if(reagent1[j].hashCode()!=Integer.parseInt(reagentHashcode)){
    reagentNew[i]=reagent1[j];
    j++;
     }else{
      i--;
      j++;
     }
}
this.reagent1=reagentNew;
return "";
}

@Override
public String update(){
QuantExperiment qeUpdate = getInstance();

List<Reagent> re=getInstance().getReagent();

int xs=re.size();
for(int i=0;i<xs;i++){
  Reagent reg=re.get(i);
  if(!findMatchingReagent(reg)){
   System.out.println(reg.getPname()+" has been removed.");
   List<Treatment> trs=reg.getTreatment();
   int xt=trs.size();
   for(int k=0;k<xt;k++){
    entityManager.remove(trs.get(k));
   }
   entityManager.remove(reg);
  }else{
   System.out.println(reg.getHjid()+" has not been removed");
  }
}
re.clear();
   for(int i=0;i<this.reagent1.length;i++){
  re.add(reagent1[i]);
}
return super.update();
}

private boolean findMatchingReagent(Reagent re){
boolean bl=false;
for(int j=0;j<this.reagent1.length;j++){
  if(reagent1[j].getHjid()==re.getHjid()){
   bl=true;
   break;
  }
}
return bl;
}