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package org.mule.example.scripting; |
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import org.mule.api.transformer.DataType; |
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import org.mule.api.transformer.TransformerException; |
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import org.mule.config.i18n.MessageFactory; |
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import org.mule.transformer.AbstractTransformer; |
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import org.mule.transformer.types.DataTypeFactory; |
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import org.mule.util.NumberUtils; |
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public class SimpleMathTransformer extends AbstractTransformer |
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{ |
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27 | 0 | private String operation = "add"; |
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private double factor; |
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public SimpleMathTransformer() |
33 | 0 | { |
34 | 0 | DataType<Number> numberDataType = DataTypeFactory.create(Number.class); |
35 | 0 | registerSourceType(numberDataType); |
36 | 0 | setReturnDataType(numberDataType); |
37 | 0 | } |
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@Override |
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public Object doTransform(Object src, String outputEncoding) throws TransformerException |
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{ |
42 | 0 | double data = NumberUtils.toDouble(src); |
43 | 0 | if (data == NumberUtils.DOUBLE_ERROR) |
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{ |
45 | 0 | throw new TransformerException(MessageFactory.createStaticMessage("Unable to convert message to double: " + src)); |
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} |
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double result; |
49 | 0 | if (operation.equalsIgnoreCase("add")) |
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{ |
51 | 0 | result = data + factor; |
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} |
53 | 0 | else if (operation.equalsIgnoreCase("subtract")) |
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{ |
55 | 0 | result = data - factor; |
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} |
57 | 0 | else if (operation.equalsIgnoreCase("multiply")) |
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{ |
59 | 0 | result = data * factor; |
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} |
61 | 0 | else if (operation.equalsIgnoreCase("divide")) |
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{ |
63 | 0 | result = data / factor; |
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} |
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else |
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{ |
67 | 0 | throw new TransformerException(MessageFactory.createStaticMessage("Operation " + operation + " not recognized")); |
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} |
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71 | 0 | return new Double(result); |
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} |
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public String getOperation() |
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{ |
76 | 0 | return operation; |
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} |
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public void setOperation(String operation) |
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{ |
81 | 0 | this.operation = operation; |
82 | 0 | } |
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public double getFactor() |
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{ |
86 | 0 | return factor; |
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} |
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public void setFactor(double factor) |
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{ |
91 | 0 | this.factor = factor; |
92 | 0 | } |
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} |