com.nerve.commons.repository.utils.ConvertUtils.java Source code

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Here is the source code for com.nerve.commons.repository.utils.ConvertUtils.java

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/**
 *  Copyright (c) 2012-2014 http://www.eryansky.com
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 */
package com.nerve.commons.repository.utils;

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

import java.util.*;

/**
 * ?.
 * @author &Eryan eryanwcp@gmail.com
 * @date   2012-9-5 ?11:12:27
 */
public class ConvertUtils extends org.apache.commons.beanutils.ConvertUtils {

    static {
        registerDateConverter();
    }

    /**
     * ????(getter), ??List.
     * 
     * @param collection ???.
     * @param propertyName ??????.
     */
    @SuppressWarnings({ "unchecked", "rawtypes" })
    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;
    }

    /**
     * ????javaBean?javabeanproperties?
     * ?nametitle
     * javabeannamevalue
     * properties
     * {
     *     name:name,
     *     title:value
     * }
     * ?name?javabeannametitle?value
     * @param collection
     * @param properties
     * @return
     */
    public static List convertElementPropertyToBeanList(final Collection collection,
            final Map<String, String> properties, Class<?> toType) {
        List list = new ArrayList();

        try {
            for (Object obj : collection) {
                Object bean = toType.newInstance();
                for (String key : properties.keySet()) {
                    PropertyUtils.setProperty(bean, properties.get(key), PropertyUtils.getProperty(obj, key));
                }
                list.add(bean);
            }
        } catch (Exception e) {
            throw ReflectionUtils.convertReflectionExceptionToUnchecked(e);
        }

        return list;
    }

    /**
     * ????(getter), ??.
     * 
     * @param collection ???.
     * @param propertyName ??????.
     * @param separator .
     */
    @SuppressWarnings({ "rawtypes" })
    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);
        }
    }

    /**
     * Apache BeanUtils?.
     * 
     * @param value ?.
     * @param toType ?.
     */
    public static Object convertToObject(String value, Class<?> toType) {
        try {
            return convert(value, toType);
        } catch (Exception e) {
            throw ReflectionUtils.convertReflectionExceptionToUnchecked(e);
        }
    }

    /**
     * ?.
     * 
     * @param values ?.
     * @param toType ?.
     */
    public static Object convertToObject(String[] values, Class<?> toType) {
        try {
            return convert(values, 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);
    }
}