toolsutil.java

JiveJdon 3.0 is the application of Jdon Framework 1.4 final.

/*
 * Copyright 2003-2005 the original author or authors.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */
package com.jdon.jivejdon.dao.util;

import java.text.DateFormat;
import java.util.Date;

import com.jdon.jivejdon.Constants;

/**
 * tools for this project.
 * @author <a href="mailto:banqJdon<AT>jdon.com">banq</a>
 *
 */
public class ToolsUtil {
    private static final long ROOT_PARENTMESSAGEID = 0;

    private static final char[] zeroArray = "0000000000000000".toCharArray();

    public static final String zeroPadString(String string, int length) {
        if (string == null || string.length() > length) {
            return string;
        }
        StringBuffer buf = new StringBuffer(length);
        buf.append(zeroArray, 0, length - string.length()).append(string);
        return buf.toString();
    }

    public static final String dateToMillis(long now) {
        return zeroPadString(Long.toString(now), 15);
    }

    public static String getDateTimeDisp(String datetime) {
        if ((datetime == null) || (datetime.equals("")))
            return "";

        DateFormat formatter = DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.MEDIUM);
        long datel = Long.parseLong(datetime);
        return formatter.format(new Date(datel));

    }
    
    public static Long getParentIDOfRoot(){
        return new Long(ROOT_PARENTMESSAGEID);
    }
    
    public static boolean isRoot(Long parentID){
        if (parentID.longValue() ==  ROOT_PARENTMESSAGEID)
            return true;
        else
            return false;
        
    }
    
    public static final String dateToMillis(Date date) {
        return zeroPadString(Long.toString(date.getTime()), 15);
    }

}