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1 package org.apache.slide.projector.descriptor;
2
3 import java.util.Iterator  ;
4 import java.util.List ;
5
6 import org.apache.slide.projector.Context;
7 import org.apache.slide.projector.i18n.ErrorMessage;
8 import org.apache.slide.projector.value.AnyValue;
9 import org.apache.slide.projector.value.ArrayValue;
10 import org.apache.slide.projector.value.NullValue;
11 import org.apache.slide.projector.value.Value;
12
13 public class ArrayValueDescriptor implements ValueDescriptor {
14 protected ValueDescriptor entryValueDescriptor;
15
16 public ArrayValueDescriptor() {
17 }
18
19 public ArrayValueDescriptor(ValueDescriptor entryValueDescriptor) {
20 this.entryValueDescriptor = entryValueDescriptor;
21 }
22
23 public void setEntryValueDescriptor(ValueDescriptor entryValueDescriptor) {
24 this.entryValueDescriptor = entryValueDescriptor;
25 }
26
27 public ValueDescriptor getEntryValueDescriptor() {
28 return entryValueDescriptor;
29 }
30
31 public Value valueOf(Object value, Context context) throws ValueCastException {
32 Value[] array = null;
33 if ( value instanceof String [] ) {
34 array = new Value[((String [])value).length];
35 for ( int i = 0; i < array.length; i++ ) {
36 array[i] = entryValueDescriptor.valueOf(((String [])value)[i], context);
37 }
38 } else if ( value instanceof List ) {
39 array = new Value[((List )value).size()];
40 int counter = 0;
41 for ( Iterator i = ((List )value).iterator(); i.hasNext(); ) {
42 Object entry = i.next();
43 if ( entry instanceof AnyValue ) {
44 try {
45 array[counter] = entryValueDescriptor.valueOf(((AnyValue)entry).load(context), context);
46 } catch (Exception e) {
47 throw new ValueCastException(new ErrorMessage("uncastableArrayValue", new Object [] { entry }));
48 }
49 } else {
50 array[counter] = entryValueDescriptor.valueOf(entry, context);
51 }
52 counter++;
53 }
54 } else if ( value instanceof ArrayValue ) {
55 array = new Value[((ArrayValue)value).getArray().length];
56 for ( int i = 0; i < array.length; i++ ) {
57 Object entry = ((ArrayValue)value).getArray()[i];
58 if ( entry instanceof AnyValue ) {
59 try {
60 array[i] = entryValueDescriptor.valueOf(((AnyValue)entry).load(context), context);
61 } catch (Exception e) {
62 throw new ValueCastException(new ErrorMessage("uncastableArrayValue", new Object [] { value }));
63 }
64 } else {
65 array[i] = entryValueDescriptor.valueOf(entry, context);
66 }
67 }
68 } else {
69 throw new ValueCastException(new ErrorMessage("uncastableArrayValue", new Object [] { value }));
70 }
71 return new ArrayValue(array);
72 }
73
74 public void validate(Value value, Context context) throws ValidationException {
75 try {
76 Value[] array = ((ArrayValue)value).getArray();
77 for ( int i = 0; i < array.length; i++ ) {
78 if ( !(array[i] instanceof NullValue) ) {
79 entryValueDescriptor.validate(array[i], context);
80 }
81 }
82 } catch ( ValidationException exception ) {
83 throw new ValidationException(new ErrorMessage("invalidNestedValue", new Object [] { value }), exception);
84 }
85 }
86 } |
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