name.martingeisse.wicket.autoform.describe.DefaultAutoformPropertyDescriptor.java Source code

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Here is the source code for name.martingeisse.wicket.autoform.describe.DefaultAutoformPropertyDescriptor.java

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/**
 * Copyright (c) 2010 Martin Geisse
 *
 * This file is distributed under the terms of the MIT license.
 */

package name.martingeisse.wicket.autoform.describe;

import java.beans.PropertyDescriptor;
import java.io.IOException;
import java.io.Serializable;
import java.lang.annotation.Annotation;
import org.apache.commons.beanutils.PropertyUtils;

/**
 * This class contains the information about a single property
 * in an autoform, using a Java Beans {@link PropertyDescriptor}.
 */
public final class DefaultAutoformPropertyDescriptor extends AbstractAutoformPropertyDescriptor {

    /**
     * the bean
     */
    private Object bean;

    /**
     * the propertyDescriptor
     */
    private transient PropertyDescriptor propertyDescriptor;

    /**
     * Creates an instance from a Java Bean property.
     * 
     * This class remembers the bean and property name to reconstruct a property descriptor
     * when de-serialized.
     * 
     * @param bean the bean that contains the property
     * @param propertyDescriptor the property descriptor for the bean property
     */
    public DefaultAutoformPropertyDescriptor(Serializable bean, PropertyDescriptor propertyDescriptor) {
        super(bean, propertyDescriptor);
        this.bean = bean;
        this.propertyDescriptor = propertyDescriptor;
    }

    /**
     * 
     */
    private void readObject(java.io.ObjectInputStream in) throws IOException, ClassNotFoundException {
        in.defaultReadObject();
        try {
            this.propertyDescriptor = PropertyUtils.getPropertyDescriptor(bean, getName());
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /* (non-Javadoc)
     * @see name.martingeisse.wicket.autoform.describe.IAutoformPropertyDescriptor#getAnnotation(java.lang.Class)
     */
    @Override
    public <T extends Annotation> T getAnnotation(Class<T> annotationClass) {
        return propertyDescriptor.getReadMethod().getAnnotation(annotationClass);
    }

    /* (non-Javadoc)
     * @see name.martingeisse.wicket.autoform.describe.IAutoformPropertyDescriptor#getAnnotations()
     */
    @Override
    public Annotation[] getAnnotations() {
        return propertyDescriptor.getReadMethod().getAnnotations();
    }

    /* (non-Javadoc)
     * @see name.martingeisse.wicket.autoform.describe.AbstractAutoformPropertyDescriptor#isReadOnly()
     */
    @Override
    public boolean isReadOnly() {
        return (propertyDescriptor.getWriteMethod() == null) || super.isReadOnly();
    }

}