org.beangle.struts2.view.component.ComponentHelper.java Source code

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Here is the source code for org.beangle.struts2.view.component.ComponentHelper.java

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/* Copyright c 2005-2012.
 * Licensed under GNU  LESSER General Public License, Version 3.
 * http://www.gnu.org/licenses
 */
package org.beangle.struts2.view.component;

import java.beans.PropertyDescriptor;
import java.lang.reflect.Method;
import java.util.Map;

import org.apache.commons.beanutils.PropertyUtils;
import org.beangle.commons.collection.CollectUtils;

public class ComponentHelper {

    protected static Map<Class<?>, Map<String, Method>> writables = CollectUtils.newHashMap();

    public static final void registe(Class<?> clazz) {
        PropertyDescriptor[] descriptors = PropertyUtils.getPropertyDescriptors(clazz);
        Map<String, Method> keys = CollectUtils.newHashMap();
        for (PropertyDescriptor a : descriptors) {
            if (null != a.getWriteMethod()) {
                keys.put(a.getName(), a.getWriteMethod());
            }
        }
        writables.put(clazz, keys);
    }

    public static Method getWriteMethod(Object bean, String property) {
        Class<?> clazz = bean.getClass();
        Map<String, Method> keys = writables.get(clazz);
        if (null == keys) {
            registe(clazz);
            return writables.get(clazz).get(property);
        } else
            return keys.get(property);
    }

    public static boolean set(Object bean, String property, Object value) {
        Class<?> clazz = bean.getClass();
        Map<String, Method> keys = writables.get(clazz);
        if (null == keys) {
            registe(clazz);
            keys = writables.get(clazz);
        }
        Method m = keys.get(property);
        if (null == m)
            return false;
        else {
            try {
                m.invoke(bean, value);
            } catch (Exception e) {
                e.printStackTrace();
            }
            return true;
        }
    }
}