1 | |
|
2 | |
|
3 | |
|
4 | |
|
5 | |
|
6 | |
|
7 | |
|
8 | |
|
9 | |
|
10 | |
|
11 | |
package org.mule.transformer.simple; |
12 | |
|
13 | |
import org.mule.api.transformer.TransformerException; |
14 | |
import org.mule.config.i18n.MessageFactory; |
15 | |
import org.mule.transformer.AbstractTransformer; |
16 | |
import org.mule.transformer.types.DataTypeFactory; |
17 | |
|
18 | |
import java.util.Map; |
19 | |
|
20 | |
|
21 | |
|
22 | |
|
23 | |
|
24 | |
public class MapLookup extends AbstractTransformer |
25 | |
{ |
26 | |
|
27 | |
protected volatile Object key; |
28 | |
|
29 | |
public MapLookup() |
30 | 0 | { |
31 | 0 | registerSourceType(DataTypeFactory.create(Map.class)); |
32 | 0 | setReturnDataType(DataTypeFactory.OBJECT); |
33 | 0 | } |
34 | |
|
35 | |
@Override |
36 | |
public Object doTransform(Object src, String encoding) throws TransformerException |
37 | |
{ |
38 | 0 | if (src instanceof Map) |
39 | |
{ |
40 | 0 | if (key != null) |
41 | |
{ |
42 | 0 | return ((Map) src).get(key); |
43 | |
} |
44 | |
else |
45 | |
{ |
46 | 0 | throw new TransformerException(MessageFactory |
47 | |
.createStaticMessage("Property 'key' must be set in order to use this transformer.")); |
48 | |
} |
49 | |
} |
50 | |
else |
51 | |
{ |
52 | 0 | throw new TransformerException(MessageFactory |
53 | |
.createStaticMessage("Message to transform must be of type java.util.Map")); |
54 | |
} |
55 | |
} |
56 | |
|
57 | |
public Object getKey() |
58 | |
{ |
59 | 0 | return key; |
60 | |
} |
61 | |
|
62 | |
public void setKey(Object key) |
63 | |
{ |
64 | 0 | this.key = key; |
65 | 0 | } |
66 | |
|
67 | |
} |