isinannotationbeanpostprocessor.java

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/*
 * Copyright 2007 The JA-SIG Collaborative. All rights reserved. See license
 * distributed with this file and available online at
 * http://www.uportal.org/license.html
 */
package org.jasig.cas.util.annotation;

import java.lang.annotation.Annotation;
import java.lang.reflect.Field;

import org.springframework.beans.FatalBeanException;

/**
 * Checks whether a value is in an array of values.
 * 
 * @author Scott Battaglia
 * @version $Revision: 1.1 $ $Date: 2007/04/10 20:02:51 $
 * @since 3.1
 */
public final class IsInAnnotationBeanPostProcessor extends
    AbstractAnnotationBeanPostProcessor {

    protected void processField(final Field field, final Annotation annotation,
        final Object bean, final String beanName) throws IllegalAccessException {
        final IsIn isIn = (IsIn) annotation;

        final int val = field.getInt(bean);

        for (int i = 0; i < isIn.value().length; i++) {
            if (val == isIn.value()[i]) {
                return;
            }
        }

        throw new FatalBeanException("field '" + field.getName()
            + "' does not contain a value of '" + isIn.value() + "' on bean '"
            + beanName + "'");
    }

    protected Class< ? extends Annotation> getSupportedAnnotation() {
        return IsIn.class;
    }
}