|
1 package org.apache.slide.projector.descriptor;
2
3 import java.text.DateFormat  ;
4 import java.text.ParseException ;
5 import java.text.SimpleDateFormat ;
6 import java.util.ArrayList ;
7 import java.util.Date ;
8 import java.util.List ;
9
10 import org.apache.slide.projector.Context;
11 import org.apache.slide.projector.i18n.ErrorMessage;
12 import org.apache.slide.projector.value.DateValue;
13 import org.apache.slide.projector.value.Value;
14
15 public class DateValueDescriptor implements ValueDescriptor {
16 protected boolean constrained;
17 protected List allowedValues = new ArrayList ();
18 protected Date earliest, latest;
19
20 public DateValueDescriptor() {
21 this.constrained = false;
22 }
23
24 public DateValueDescriptor(Date earliest, Date latest) {
25 constrained = true;
26 this.earliest = earliest;
27 this.latest = latest;
28 }
29
30 public boolean isConstrained() {
31 return constrained;
32 }
33
34 public void setEarliest(Date earliest) {
35 this.earliest = earliest;
36 }
37
38 public void setLatest(Date latest) {
39 this.latest = latest;
40 }
41
42 public Value valueOf(Object value, Context context) throws ValueCastException {
43 Date date = null;
44 if ( value instanceof DateValue ) {
45 return (DateValue)value;
46 } else {
47 try {
48 String valueAsString = StringValueDescriptor.ANY.valueOf(value, null).toString();
49 try {
50 date = new Date (Long.valueOf(valueAsString).longValue());
51 } catch ( NumberFormatException exception ) {
52 try {
53 date = DateFormat.getInstance().parse(valueAsString);
54 } catch (ParseException e) {
55 try {
56 date = new SimpleDateFormat ("yyyy-MM-dd'T'HH:mm:ss'Z'").parse(valueAsString);
57 } catch (ParseException pe) {
58 throw new ValueCastException(new ErrorMessage("uncastableDateValue", new Object [] { value }), pe);
59 }
60 }
61 }
62 } catch ( ValueCastException exception ) {
63 throw new ValueCastException(new ErrorMessage("uncastableDateValue", new Object [] { value }), exception);
64 }
65 }
66 return new DateValue(date);
67 }
68
69 public void validate(Value value, Context context) throws ValidationException {
70 Date date = ((DateValue)value).getDate();
71 if ( constrained && ( date.after(latest) || date.before(earliest) ) ) {
72 throw new ValidationException(new ErrorMessage("invalidDate", new Object [] { date, earliest, latest }));
73 }
74 }
75 } |
Popular Tags |
Java API By Example, From Geeks To Geeks.