package org.drools.spring.metadata.annotation.java;
/*
* Copyright 2005 (C) The Werken Company. All Rights Reserved.
*
* Redistribution and use of this software and associated documentation
* ("Software"), with or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain copyright statements and
* notices. Redistributions must also contain a copy of this document.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* For written permission, please contact bob@werken.com.
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* 4. Products derived from this Software may not be called "drools" nor may
* "drools" appear in their names without prior written permission of The Werken
* Company. "drools" is a registered trademark of The Werken Company.
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* 5. Due credit should be given to The Werken Company.
* (http://drools.werken.com/).
*
* THIS SOFTWARE IS PROVIDED BY THE WERKEN COMPANY AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import org.drools.spring.metadata.ArgumentMetadata;
import org.drools.spring.metadata.ArgumentMetadataSource;
import org.drools.spring.metadata.DataArgumentMetadata;
import org.drools.spring.metadata.FactArgumentMetadata;
public class AnnotationArgumentMetadataSource implements ArgumentMetadataSource{
public ArgumentMetadata getArgumentMetadata(Method method, Class parameterType, int parameterIndex) {
Annotation[] parameterAnnotations = method.getParameterAnnotations()[parameterIndex];
for (int i = 0; i < parameterAnnotations.length; i++) {
if (parameterAnnotations[i] instanceof Fact) {
return createFactMetadata((Fact)parameterAnnotations[i], parameterType);
} else if (parameterAnnotations[i] instanceof Data) {
return createDataMetadata((Data)parameterAnnotations[i], parameterType);
}
}
return null;
}
private ArgumentMetadata createFactMetadata(Fact fact, Class parameterType) {
return new FactArgumentMetadata(
fact.value().length() > 0 ? fact.value() : null,
parameterType);
}
private ArgumentMetadata createDataMetadata(Data data, Class parameterType) {
return new DataArgumentMetadata(data.value(), parameterType);
}
}