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package org.mule.transformer; |
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import org.mule.api.transformer.DataType; |
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import org.mule.api.transformer.DiscoverableTransformer; |
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import org.mule.api.transformer.Transformer; |
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import java.util.List; |
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import org.apache.commons.beanutils.MethodUtils; |
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public class TransformerWeighting implements Comparable |
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{ |
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private Transformer transformer; |
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private int inputWeighting; |
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private int outputWeighting; |
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private Class inputClass; |
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private Class outputClass; |
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public TransformerWeighting(Class inputClass, Class outputClass, Transformer transformer) |
31 | 0 | { |
32 | 0 | this.inputClass = inputClass; |
33 | 0 | this.outputClass = outputClass; |
34 | 0 | this.transformer = transformer; |
35 | 0 | init(); |
36 | 0 | } |
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private void init() |
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{ |
40 | 0 | inputWeighting = Integer.MAX_VALUE; |
41 | 0 | List<DataType<?>> sourceTypes = transformer.getSourceDataTypes(); |
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|
43 | 0 | for (DataType type : sourceTypes) |
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{ |
45 | 0 | int weighting = getWeighting(-1, inputClass, type.getType()); |
46 | 0 | if (weighting < inputWeighting && weighting != -1) |
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{ |
48 | 0 | inputWeighting = weighting; |
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} |
50 | 0 | } |
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|
52 | 0 | outputWeighting = getWeighting(-1, outputClass, transformer.getReturnClass()); |
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|
54 | 0 | inputWeighting = (inputWeighting == Integer.MAX_VALUE ? -1 : inputWeighting); |
55 | 0 | outputWeighting = (outputWeighting == Integer.MAX_VALUE ? -1 : outputWeighting); |
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|
57 | 0 | } |
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protected int getWeighting(int weighting, Class src, Class dest) |
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{ |
76 | 0 | if (!dest.isAssignableFrom(src)) |
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{ |
78 | 0 | if (src.isPrimitive()) |
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{ |
80 | 0 | return getWeighting(weighting, MethodUtils.getPrimitiveWrapper(src), dest); |
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} |
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|
83 | 0 | return -1; |
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} |
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|
86 | 0 | if (dest.equals(src)) |
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{ |
88 | 0 | if (dest.equals(Object.class)) |
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{ |
90 | 0 | return weighting + 3; |
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} |
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else |
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{ |
94 | 0 | return weighting + 1; |
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} |
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} |
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|
98 | 0 | if (dest.isInterface() && src.getInterfaces().length > 0) |
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{ |
100 | 0 | for (int i = 0; i < src.getInterfaces().length; i++) |
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{ |
102 | 0 | Class aClass = src.getInterfaces()[i]; |
103 | 0 | if (dest.equals(aClass)) |
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{ |
105 | 0 | return weighting + 2; |
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} |
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} |
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} |
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|
110 | 0 | if (src.getSuperclass() != null) |
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{ |
112 | 0 | return getWeighting(weighting + 1, src.getSuperclass(), dest); |
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} |
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115 | 0 | return -1; |
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} |
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public Class getInputClass() |
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{ |
120 | 0 | return inputClass; |
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} |
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public int getInputWeighting() |
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{ |
125 | 0 | return inputWeighting; |
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} |
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public Class getOutputClass() |
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{ |
130 | 0 | return outputClass; |
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} |
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public int getOutputWeighting() |
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{ |
135 | 0 | return outputWeighting; |
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} |
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public Transformer getTransformer() |
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{ |
140 | 0 | return transformer; |
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} |
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public boolean isExactMatch() |
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{ |
145 | 0 | return inputWeighting == 0 && outputWeighting == 0; |
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} |
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public boolean isNotMatch() |
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{ |
150 | 0 | return inputWeighting == -1 || outputWeighting == -1; |
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} |
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public int compareTo(Object o) |
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{ |
155 | 0 | TransformerWeighting weighting = (TransformerWeighting) o; |
156 | 0 | if (weighting.getInputWeighting() == getInputWeighting() && |
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weighting.getOutputWeighting() == getOutputWeighting()) |
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{ |
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|
161 | 0 | if (weighting.getTransformer() instanceof DiscoverableTransformer |
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&& this.getTransformer() instanceof DiscoverableTransformer) |
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{ |
164 | 0 | int x = ((DiscoverableTransformer) weighting.getTransformer()).getPriorityWeighting(); |
165 | 0 | int y = ((DiscoverableTransformer) this.getTransformer()).getPriorityWeighting(); |
166 | 0 | if (x > y) |
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{ |
168 | 0 | return -1; |
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} |
170 | 0 | if (x < y) |
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{ |
172 | 0 | return 1; |
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} |
174 | 0 | return 0; |
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} |
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else |
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{ |
178 | 0 | return 0; |
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} |
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} |
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else |
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{ |
183 | 0 | if (isNotMatch()) |
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{ |
185 | 0 | return -1; |
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} |
187 | 0 | else if (weighting.isNotMatch() && !isNotMatch()) |
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{ |
189 | 0 | return 1; |
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} |
191 | 0 | else if (weighting.isExactMatch() && !isExactMatch()) |
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{ |
193 | 0 | return -1; |
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} |
195 | 0 | else if (weighting.getInputWeighting() < getInputWeighting() && |
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weighting.getOutputWeighting() < getOutputWeighting()) |
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{ |
198 | 0 | return -1; |
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} |
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|
201 | 0 | else if (weighting.getInputWeighting() == getInputWeighting() && |
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weighting.getOutputWeighting() < getOutputWeighting()) |
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{ |
204 | 0 | return -1; |
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} |
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|
207 | 0 | else if (weighting.getInputWeighting() < getInputWeighting() && |
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weighting.getOutputWeighting() == getOutputWeighting()) |
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{ |
210 | 0 | return -1; |
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} |
212 | 0 | return 1; |
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} |
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} |
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public boolean equals(Object o) |
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{ |
218 | 0 | if (this == o) |
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{ |
220 | 0 | return true; |
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} |
222 | 0 | if (o == null || getClass() != o.getClass()) |
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{ |
224 | 0 | return false; |
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} |
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|
227 | 0 | TransformerWeighting that = (TransformerWeighting) o; |
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229 | 0 | if (inputClass != null ? !inputClass.equals(that.inputClass) : that.inputClass != null) |
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{ |
231 | 0 | return false; |
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} |
233 | 0 | if (outputClass != null ? !outputClass.equals(that.outputClass) : that.outputClass != null) |
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{ |
235 | 0 | return false; |
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} |
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|
238 | 0 | return true; |
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} |
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public int hashCode() |
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{ |
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int result; |
244 | 0 | result = (transformer != null ? transformer.hashCode() : 0); |
245 | 0 | result = 31 * result + inputWeighting; |
246 | 0 | result = 31 * result + outputWeighting; |
247 | 0 | result = 31 * result + (inputClass != null ? inputClass.hashCode() : 0); |
248 | 0 | result = 31 * result + (outputClass != null ? outputClass.hashCode() : 0); |
249 | 0 | return result; |
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} |
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public String toString() |
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{ |
255 | 0 | final StringBuffer sb = new StringBuffer(); |
256 | 0 | sb.append("TransformerWeighting"); |
257 | 0 | sb.append("{inputClass=").append(inputClass); |
258 | 0 | sb.append(", inputWeighting=").append(inputWeighting); |
259 | 0 | sb.append(", outputClass=").append(outputClass); |
260 | 0 | sb.append(", outputWeighting=").append(outputWeighting); |
261 | 0 | sb.append(", transformer=").append(transformer.getName()); |
262 | 0 | sb.append('}'); |
263 | 0 | return sb.toString(); |
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} |
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} |