1 | |
|
2 | |
|
3 | |
|
4 | |
|
5 | |
|
6 | |
|
7 | |
|
8 | |
|
9 | |
|
10 | |
package org.mule.transformer; |
11 | |
|
12 | |
import org.mule.api.transformer.DiscoverableTransformer; |
13 | |
import org.mule.api.transformer.Transformer; |
14 | |
|
15 | |
import java.util.Iterator; |
16 | |
import java.util.List; |
17 | |
|
18 | |
|
19 | |
|
20 | |
|
21 | |
|
22 | |
|
23 | |
public class TransformerWeighting implements Comparable |
24 | |
{ |
25 | |
private Transformer transformer; |
26 | |
private int inputWeighting; |
27 | |
private int outputWeighting; |
28 | |
private Class inputClass; |
29 | |
private Class outputClass; |
30 | |
|
31 | |
public TransformerWeighting(Class inputClass, Class outputClass, Transformer transformer) |
32 | 26 | { |
33 | 26 | this.inputClass = inputClass; |
34 | 26 | this.outputClass = outputClass; |
35 | 26 | this.transformer = transformer; |
36 | 26 | init(); |
37 | 26 | } |
38 | |
|
39 | |
private void init() |
40 | |
{ |
41 | 26 | inputWeighting = Integer.MAX_VALUE; |
42 | 26 | List sourceTypes = transformer.getSourceTypes(); |
43 | |
|
44 | 26 | for (Iterator iterator = sourceTypes.iterator(); iterator.hasNext();) |
45 | |
{ |
46 | 46 | Class aClass = (Class) iterator.next(); |
47 | 46 | int weighting = getWeighting(-1, inputClass, aClass); |
48 | 46 | if (weighting < inputWeighting && weighting != -1) |
49 | |
{ |
50 | 22 | inputWeighting = weighting; |
51 | |
} |
52 | 46 | } |
53 | |
|
54 | 26 | outputWeighting = getWeighting(-1, outputClass, transformer.getReturnClass()); |
55 | |
|
56 | 26 | inputWeighting = (inputWeighting == Integer.MAX_VALUE ? -1 : inputWeighting); |
57 | 26 | outputWeighting = (outputWeighting == Integer.MAX_VALUE ? -1 : outputWeighting); |
58 | |
|
59 | 26 | } |
60 | |
|
61 | |
protected int getWeighting(int weighting, Class src, Class dest) |
62 | |
{ |
63 | 94 | int x = weighting + 1; |
64 | 94 | if (dest.equals(src)) |
65 | |
{ |
66 | 40 | return x; |
67 | |
} |
68 | 54 | else if (!dest.isAssignableFrom(src)) |
69 | |
{ |
70 | 24 | return -1; |
71 | |
} |
72 | 30 | else if (src.getInterfaces().length > 0) |
73 | |
{ |
74 | 12 | for (int i = 0; i < src.getInterfaces().length; i++) |
75 | |
{ |
76 | 10 | Class aClass = src.getInterfaces()[i]; |
77 | 10 | if (dest.equals(aClass)) |
78 | |
{ |
79 | 6 | return x; |
80 | |
} |
81 | |
} |
82 | 2 | return x + 1; |
83 | |
} |
84 | 22 | else if (src.getSuperclass() != null) |
85 | |
{ |
86 | 22 | return getWeighting(x, src.getSuperclass(), dest); |
87 | |
|
88 | |
} |
89 | 0 | return x; |
90 | |
} |
91 | |
|
92 | |
public Class getInputClass() |
93 | |
{ |
94 | 0 | return inputClass; |
95 | |
} |
96 | |
|
97 | |
public int getInputWeighting() |
98 | |
{ |
99 | 84 | return inputWeighting; |
100 | |
} |
101 | |
|
102 | |
public Class getOutputClass() |
103 | |
{ |
104 | 0 | return outputClass; |
105 | |
} |
106 | |
|
107 | |
public int getOutputWeighting() |
108 | |
{ |
109 | 24 | return outputWeighting; |
110 | |
} |
111 | |
|
112 | |
public Transformer getTransformer() |
113 | |
{ |
114 | 4 | return transformer; |
115 | |
} |
116 | |
|
117 | |
public boolean isExactMatch() |
118 | |
{ |
119 | 24 | return inputWeighting == 0 && outputWeighting == 0; |
120 | |
} |
121 | |
|
122 | |
public boolean isNotMatch() |
123 | |
{ |
124 | 36 | return inputWeighting == -1 || outputWeighting == -1; |
125 | |
} |
126 | |
|
127 | |
public int compareTo(Object o) |
128 | |
{ |
129 | 10 | TransformerWeighting weighting = (TransformerWeighting) o; |
130 | 10 | if (weighting.getInputWeighting() == getInputWeighting() && |
131 | |
weighting.getOutputWeighting() == getOutputWeighting()) |
132 | |
{ |
133 | |
|
134 | |
|
135 | 0 | if (weighting.getTransformer() instanceof DiscoverableTransformer |
136 | |
&& this.getTransformer() instanceof DiscoverableTransformer) |
137 | |
{ |
138 | 0 | int x = ((DiscoverableTransformer) weighting.getTransformer()).getPriorityWeighting(); |
139 | 0 | int y = ((DiscoverableTransformer) this.getTransformer()).getPriorityWeighting(); |
140 | 0 | if (x > y) |
141 | |
{ |
142 | 0 | return -1; |
143 | |
} |
144 | 0 | if (x < y) |
145 | |
{ |
146 | 0 | return 1; |
147 | |
} |
148 | 0 | return 0; |
149 | |
} |
150 | |
else |
151 | |
{ |
152 | 0 | return 0; |
153 | |
} |
154 | |
} |
155 | |
else |
156 | |
{ |
157 | 10 | if (isNotMatch()) |
158 | |
{ |
159 | 2 | return -1; |
160 | |
} |
161 | 8 | else if (weighting.isNotMatch() && !isNotMatch()) |
162 | |
{ |
163 | 0 | return 1; |
164 | |
} |
165 | 8 | else if (weighting.isExactMatch() && !isExactMatch()) |
166 | |
{ |
167 | 0 | return -1; |
168 | |
} |
169 | 8 | else if (weighting.getInputWeighting() < getInputWeighting() && |
170 | |
weighting.getOutputWeighting() < getOutputWeighting()) |
171 | |
{ |
172 | 0 | return -1; |
173 | |
} |
174 | |
|
175 | 8 | else if (weighting.getInputWeighting() == getInputWeighting() && |
176 | |
weighting.getOutputWeighting() < getOutputWeighting()) |
177 | |
{ |
178 | 0 | return -1; |
179 | |
} |
180 | |
|
181 | 8 | else if (weighting.getInputWeighting() < getInputWeighting() && |
182 | |
weighting.getOutputWeighting() == getOutputWeighting()) |
183 | |
{ |
184 | 2 | return -1; |
185 | |
} |
186 | 6 | return 1; |
187 | |
} |
188 | |
} |
189 | |
|
190 | |
public boolean equals(Object o) |
191 | |
{ |
192 | 0 | if (this == o) |
193 | |
{ |
194 | 0 | return true; |
195 | |
} |
196 | 0 | if (o == null || getClass() != o.getClass()) |
197 | |
{ |
198 | 0 | return false; |
199 | |
} |
200 | |
|
201 | 0 | TransformerWeighting that = (TransformerWeighting) o; |
202 | |
|
203 | 0 | if (inputClass != null ? !inputClass.equals(that.inputClass) : that.inputClass != null) |
204 | |
{ |
205 | 0 | return false; |
206 | |
} |
207 | 0 | if (outputClass != null ? !outputClass.equals(that.outputClass) : that.outputClass != null) |
208 | |
{ |
209 | 0 | return false; |
210 | |
} |
211 | |
|
212 | 0 | return true; |
213 | |
} |
214 | |
|
215 | |
public int hashCode() |
216 | |
{ |
217 | |
int result; |
218 | 0 | result = (transformer != null ? transformer.hashCode() : 0); |
219 | 0 | result = 31 * result + inputWeighting; |
220 | 0 | result = 31 * result + outputWeighting; |
221 | 0 | result = 31 * result + (inputClass != null ? inputClass.hashCode() : 0); |
222 | 0 | result = 31 * result + (outputClass != null ? outputClass.hashCode() : 0); |
223 | 0 | return result; |
224 | |
} |
225 | |
|
226 | |
|
227 | |
public String toString() |
228 | |
{ |
229 | 0 | final StringBuffer sb = new StringBuffer(); |
230 | 0 | sb.append("TransformerWeighting"); |
231 | 0 | sb.append("{inputClass=").append(inputClass); |
232 | 0 | sb.append(", inputWeighting=").append(inputWeighting); |
233 | 0 | sb.append(", outputClass=").append(outputClass); |
234 | 0 | sb.append(", outputWeighting=").append(outputWeighting); |
235 | 0 | sb.append(", transformer=").append(transformer.getName()); |
236 | 0 | sb.append('}'); |
237 | 0 | return sb.toString(); |
238 | |
} |
239 | |
} |