cn.newtouch.util.hibernate.ConvertUtils.java Source code

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Here is the source code for cn.newtouch.util.hibernate.ConvertUtils.java

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/**
 * Copyright (c) 2005-2010 springside.org.cn
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * 
 * $Id: ConvertUtils.java 1211 2010-09-10 16:20:45Z calvinxiu $
 */
package cn.newtouch.util.hibernate;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.List;

import org.apache.commons.beanutils.PropertyUtils;
import org.apache.commons.beanutils.converters.DateConverter;
import org.apache.commons.lang.StringUtils;

import cn.newtouch.util.ReflectionUtils;

public class ConvertUtils {

    static {
        registerDateConverter();
    }

    /**
     * ????(getter), ??List.
     * 
     * @param collection
     *            ???.
     * @param propertyName
     *            ??????.
     */
    @SuppressWarnings("unchecked")
    public static List convertElementPropertyToList(final Collection collection, final String propertyName) {
        List list = new ArrayList();

        try {
            for (Object obj : collection) {
                list.add(PropertyUtils.getProperty(obj, propertyName));
            }
        } catch (Exception e) {
            throw ReflectionUtils.convertReflectionExceptionToUnchecked(e);
        }

        return list;
    }

    /**
     * ????(getter), ??.
     * 
     * @param collection
     *            ???.
     * @param propertyName
     *            ??????.
     * @param separator
     *            .
     */
    @SuppressWarnings("unchecked")
    public static String convertElementPropertyToString(final Collection collection, final String propertyName,
            final String separator) {
        List list = convertElementPropertyToList(collection, propertyName);
        return StringUtils.join(list, separator);
    }

    /**
     * ?.
     * 
     * @param value
     *            ?.
     * @param toType
     *            ?.
     */
    public static Object convertStringToObject(String value, Class<?> toType) {
        try {
            return org.apache.commons.beanutils.ConvertUtils.convert(value, toType);
        } catch (Exception e) {
            throw ReflectionUtils.convertReflectionExceptionToUnchecked(e);
        }
    }

    /**
     * Converter?: yyyy-MM-dd  yyyy-MM-dd HH:mm:ss
     */
    private static void registerDateConverter() {
        DateConverter dc = new DateConverter();
        dc.setUseLocaleFormat(true);
        dc.setPatterns(new String[] { "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss" });
        org.apache.commons.beanutils.ConvertUtils.register(dc, Date.class);
    }
}