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package org.mule.config.expression; |
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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import org.mule.api.MuleContext; |
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import org.mule.api.expression.ExpressionAnnotationParser; |
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import org.mule.api.lifecycle.InitialisationException; |
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import org.mule.api.registry.RegistrationException; |
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import org.mule.api.transformer.TransformerException; |
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import org.mule.config.AnnotationsParserFactory; |
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import org.mule.config.i18n.AnnotationsMessages; |
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import org.mule.expression.transformers.ExpressionArgument; |
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import org.mule.expression.transformers.ExpressionTransformer; |
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import java.lang.annotation.Annotation; |
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import java.lang.reflect.Method; |
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27 | 0 | public class ExpressionAnnotationsHelper |
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{ |
29 | 0 | protected static Log logger = LogFactory.getLog(ExpressionAnnotationsHelper.class); |
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public static ExpressionTransformer getTransformerForMethodWithAnnotations(Method method, MuleContext context) throws TransformerException, InitialisationException |
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{ |
33 | 0 | ExpressionTransformer trans = new ExpressionTransformer(); |
34 | 0 | trans.setMuleContext(context); |
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36 | 0 | Annotation[][] annotations = method.getParameterAnnotations(); |
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38 | 0 | for (int i = 0; i < annotations.length; i++) |
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{ |
40 | 0 | Annotation[] annotation = annotations[i]; |
41 | 0 | for (int j = 0; j < annotation.length; j++) |
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{ |
43 | 0 | Annotation ann = annotation[j]; |
44 | 0 | ExpressionArgument arg = parseAnnotation(ann, method.getParameterTypes()[i], context); |
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46 | 0 | if (arg != null) |
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{ |
48 | 0 | trans.addArgument(arg); |
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} |
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} |
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} |
52 | 0 | trans.initialise(); |
53 | 0 | return trans; |
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} |
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static synchronized ExpressionArgument parseAnnotation(Annotation annotation, |
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Class<?> paramType, MuleContext muleContext) |
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{ |
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AnnotationsParserFactory factory; |
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try |
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{ |
62 | 0 | factory = muleContext.getRegistry().lookupObject(AnnotationsParserFactory.class); |
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} |
64 | 0 | catch (RegistrationException e) |
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{ |
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67 | 0 | throw new IllegalArgumentException(AnnotationsMessages.noParserFoundForAnnotation(annotation).getMessage()); |
68 | 0 | } |
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70 | 0 | ExpressionAnnotationParser parser = factory.getExpressionParser(annotation); |
71 | 0 | if (parser == null) |
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{ |
73 | 0 | if (logger.isDebugEnabled()) |
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{ |
75 | 0 | logger.debug(AnnotationsMessages.noParserFoundForAnnotation(annotation).getMessage()); |
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} |
77 | 0 | return null; |
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} |
79 | 0 | return parser.parse(annotation, paramType); |
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} |
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} |