1 | |
|
2 | |
|
3 | |
|
4 | |
|
5 | |
|
6 | |
|
7 | |
|
8 | |
|
9 | |
|
10 | |
|
11 | |
package org.mule.transformer; |
12 | |
|
13 | |
import org.mule.RegistryContext; |
14 | |
import org.mule.api.DefaultMuleException; |
15 | |
import org.mule.api.MuleException; |
16 | |
import org.mule.api.lifecycle.InitialisationException; |
17 | |
import org.mule.api.transformer.Transformer; |
18 | |
import org.mule.config.i18n.CoreMessages; |
19 | |
import org.mule.transport.service.TransportFactoryException; |
20 | |
import org.mule.transport.service.TransportServiceDescriptor; |
21 | |
|
22 | |
import java.util.Iterator; |
23 | |
import java.util.LinkedList; |
24 | |
import java.util.List; |
25 | |
import java.util.StringTokenizer; |
26 | |
|
27 | |
import org.apache.commons.logging.Log; |
28 | |
import org.apache.commons.logging.LogFactory; |
29 | |
|
30 | 0 | public class TransformerUtils |
31 | |
{ |
32 | |
|
33 | |
public static final String COMMA = ","; |
34 | |
|
35 | 2 | private static Log logger = LogFactory.getLog(AbstractTransformer.class); |
36 | |
|
37 | |
public static void initialiseAllTransformers(List transformers) throws InitialisationException |
38 | |
{ |
39 | 550 | if (transformers != null) |
40 | |
{ |
41 | 550 | Iterator transformer = transformers.iterator(); |
42 | 1100 | while (transformer.hasNext()) |
43 | |
{ |
44 | 550 | ((Transformer) transformer.next()).initialise(); |
45 | |
} |
46 | |
} |
47 | 550 | } |
48 | |
|
49 | |
public static String toString(List transformers) |
50 | |
{ |
51 | 0 | StringBuffer buffer = new StringBuffer(); |
52 | 0 | Iterator transformer = transformers.iterator(); |
53 | 0 | while (transformer.hasNext()) |
54 | |
{ |
55 | 0 | buffer.append(transformer.next().toString()); |
56 | 0 | if (transformer.hasNext()) |
57 | |
{ |
58 | 0 | buffer.append(" -> "); |
59 | |
} |
60 | |
} |
61 | 0 | return buffer.toString(); |
62 | |
} |
63 | |
|
64 | |
public static Transformer firstOrNull(List transformers) |
65 | |
{ |
66 | 0 | if (transformers != null && 0 != transformers.size()) |
67 | |
{ |
68 | 0 | return (Transformer) transformers.get(0); |
69 | |
} |
70 | |
else |
71 | |
{ |
72 | 0 | return null; |
73 | |
} |
74 | |
} |
75 | |
|
76 | |
public static boolean isSourceTypeSupportedByFirst(List transformers, Class clazz) |
77 | |
{ |
78 | 0 | Transformer transformer = firstOrNull(transformers); |
79 | 0 | return null != transformer && transformer.isSourceTypeSupported(clazz); |
80 | |
} |
81 | |
|
82 | 0 | protected static interface TransformerSource |
83 | |
{ |
84 | |
public List getTransformers() throws TransportFactoryException; |
85 | |
} |
86 | |
|
87 | |
protected static List getTransformersFromSource(TransformerSource source) |
88 | |
{ |
89 | |
try |
90 | |
{ |
91 | 550 | List transformers = source.getTransformers(); |
92 | 550 | TransformerUtils.initialiseAllTransformers(transformers); |
93 | 550 | return transformers; |
94 | |
} |
95 | 0 | catch (MuleException e) |
96 | |
{ |
97 | 0 | logger.debug(e.getMessage(), e); |
98 | 0 | return null; |
99 | |
} |
100 | |
} |
101 | |
|
102 | |
public static List getDefaultInboundTransformers(final TransportServiceDescriptor serviceDescriptor) |
103 | |
{ |
104 | 68 | return getTransformersFromSource(new TransformerSource() |
105 | |
{ |
106 | 68 | public List getTransformers() throws TransportFactoryException |
107 | |
{ |
108 | 68 | return serviceDescriptor.createInboundTransformers(); |
109 | |
} |
110 | |
}); |
111 | |
} |
112 | |
|
113 | |
public static List getDefaultResponseTransformers(final TransportServiceDescriptor serviceDescriptor) |
114 | |
{ |
115 | 68 | return getTransformersFromSource(new TransformerSource() |
116 | |
{ |
117 | 68 | public List getTransformers() throws TransportFactoryException |
118 | |
{ |
119 | 68 | return serviceDescriptor.createResponseTransformers(); |
120 | |
} |
121 | |
}); |
122 | |
} |
123 | |
|
124 | |
public static List getDefaultOutboundTransformers(final TransportServiceDescriptor serviceDescriptor) |
125 | |
{ |
126 | 414 | return getTransformersFromSource(new TransformerSource() |
127 | |
{ |
128 | 414 | public List getTransformers() throws TransportFactoryException |
129 | |
{ |
130 | 414 | return serviceDescriptor.createOutboundTransformers(); |
131 | |
} |
132 | |
}); |
133 | |
} |
134 | |
|
135 | |
|
136 | |
|
137 | |
|
138 | |
|
139 | |
|
140 | |
|
141 | |
|
142 | |
|
143 | |
public static List getTransformers(String names) throws DefaultMuleException |
144 | |
{ |
145 | 968 | if (null != names) |
146 | |
{ |
147 | 0 | List transformers = new LinkedList(); |
148 | 0 | StringTokenizer st = new StringTokenizer(names, COMMA); |
149 | 0 | while (st.hasMoreTokens()) |
150 | |
{ |
151 | 0 | String key = st.nextToken().trim(); |
152 | 0 | Transformer transformer = RegistryContext.getRegistry().lookupTransformer(key); |
153 | |
|
154 | 0 | if (transformer == null) |
155 | |
{ |
156 | 0 | throw new DefaultMuleException(CoreMessages.objectNotRegistered("Transformer", key)); |
157 | |
} |
158 | 0 | transformers.add(transformer); |
159 | 0 | } |
160 | 0 | return transformers; |
161 | |
} |
162 | |
else |
163 | |
{ |
164 | 968 | return null; |
165 | |
} |
166 | |
} |
167 | |
|
168 | |
} |