annotationmethodmetadatasource.java

来自「drools 一个开放源码的规则引擎」· Java 代码 · 共 68 行

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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 * from this Software without prior written permission of The Werken Company.
 * For written permission, please contact [e-mail].
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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.
 *
 * 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.reflect.Method;

import org.drools.spring.metadata.MethodMetadata;
import org.drools.spring.metadata.MethodMetadataSource;

public class AnnotationMethodMetadataSource implements MethodMetadataSource {

    private static final MethodMetadata METHOD_CONDITION_METADATA = new MethodMetadata(MethodMetadata.METHOD_CONDITION);
    private static final MethodMetadata OBJECT_CONDITION_METADATA = new MethodMetadata(MethodMetadata.OBJECT_CONDITION);
    private static final MethodMetadata METHOD_CONSEQUENCE_METADATA = new MethodMetadata(MethodMetadata.METHOD_CONSEQUENCE);

    public MethodMetadata getMethodMetadata(Method method) {
        if (method.isAnnotationPresent(Condition.class)) {
            return METHOD_CONDITION_METADATA;
        } else if (method.isAnnotationPresent(ObjectCondition.class)) {
                return OBJECT_CONDITION_METADATA;
        } else if (method.isAnnotationPresent(Consequence.class)) {
            return METHOD_CONSEQUENCE_METADATA;
        } else {
            return null;
        }
    }
}