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1 package jfun.yan.xml.nuts;
2
3 import java.util.HashSet  ;
4
5 import java.util.Set ;
6
7
8 import jfun.util.Misc;
9 import jfun.util.StringUtils;
10 import jfun.yan.Component;
11 import jfun.yan.Components;
12 import jfun.yan.SimpleComponent;
13 import jfun.yan.util.Utils;
14
20 public class SetNut extends CollectionNut {
21 public void setType(Class type){
22 if(Set .class.isAssignableFrom(type)){
23 super.setType(type);
24 }
25 else{
26 raise(Misc.getTypeName(type) +
27 " is not a sub-type of java.util.Set");
28 }
29 }
30
31 private Set createSet(int sz){
32 try{
33 return Utils.createSet(getType(), sz);
34 }
35 catch(Exception e){
36 throw raise(e);
37 }
38 }
39 public Component eval(){
40 final Component[] elements = getMandatoryElements();
41 final Class ltype = getType(HashSet .class);
42 final Component step1 = new SimpleComponent(ltype){
43 public Object create(){
44 return createSet(elements.length);
45 }
46 public String toString(){
47 return "set"+StringUtils.listArray("[",",","]",elements);
48 }
49 };
50 return Components.storeSet(step1, elements);
51 }
52
53 }
54 |
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Java API By Example, From Geeks To Geeks.