org.sagacity.sqltoy.plugins.id.impl.DefaultIdGenerator Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of sagacity-sqltoy Show documentation

sqltoy core code

There is a newer version: 5.6.31.jre8

/**
 * 
 */
package org.sagacity.sqltoy.plugins.id.impl;

import java.util.Date;

import org.sagacity.sqltoy.SqlToyConstants;
import org.sagacity.sqltoy.plugins.id.IdGenerator;
import org.sagacity.sqltoy.utils.IdUtil;
import org.sagacity.sqltoy.utils.SqlUtil;

/**
 * @project sqltoy-orm
 * @description 格式:13位当前毫秒+6位纳秒+3位主机ID 构成的22位不重复的ID
 * @author zhongxuchen
 * @version v1.0,Date:2012-6-4
 */
public class DefaultIdGenerator implements IdGenerator {
	private static IdGenerator me = new DefaultIdGenerator();

	/**
	 * @TODO 获取对象单例
	 * @return
	 */
	public static IdGenerator getInstance() {
		return me;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.sagacity.sqltoy.plugins.id.IdGenerator#getId(java.lang.String,
	 * java.lang.String, java.lang.Object[], int)
	 */
	@Override
	public Object getId(String tableName, String signature, String[] relatedColumns, Object[] relatedColsValue,
			Date bizDate, String idJavaType, int length, int sequenceSize) {
		// 如果是多个应用，在一个节点服务器上(相同IP)，主键容易产生重复，要通过下面形式设置不同服务id
		// 三位数字
		// java -Dsqltoy.server.id=121
		return SqlUtil.convertIdValueType(IdUtil.getShortNanoTimeId(tableName, SqlToyConstants.SERVER_ID), idJavaType);
	}
}