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package com.tmsps.ne4spring.orm.param;

import org.apache.commons.lang3.StringUtils;

import lombok.Data;

/**
 *	@ClassName: ParamBean
 *	@Description: SQL参数Bean,方便做一些封装,用来代替ne4Spring的ParamBean,做一些人性化优化。
 *	@author: zhangwei(Administrator)[email protected]
 *	@date: 2022/08/24
 *	@Copyright: 行歌信息	
 */
@Data
public class ParameterBean {
	//SQL查询中涉及到的参数
	private NeParamList parametes = new NeParamList();
	//SQL语句中的select语句,从起始到from语句之前这一段
	private StringBuffer select = new StringBuffer();
	//SQL语句中from语句之后的部分。
	private StringBuffer from = new StringBuffer();
	
	/**
	 * 	@Description: SQL语句中select语句添加,一般为数据库命令的起始部分
	 *	@author: zhangwei(Administrator)[email protected]
	 *	@date: 2022/08/24
	 */
	public void selectSQL(String selectSQL) {
		this.select.append(selectSQL.trim());
	}
	
	/**
	 * 	@Description: SQL语句的from语句部分
	 *	@author: zhangwei(Administrator)[email protected]
	 *	@date: 2022/08/24
	 */
	public void fromSQL(String fromSQL) {
		this.from.append(StringUtils.SPACE).append(fromSQL.trim());
	}
	
	/**
	 * 	@Description: 继续追加SQL语句,正常情况下SQL语句追加在from语句之后
	 *	@author: zhangwei(Administrator)[email protected]
	 *	@date: 2022/08/24
	 */
	public void sqlAppend(String appendSQL) {
		if(StringUtils.isNotBlank(appendSQL)) {
			this.fromSQL(appendSQL);
		}
	}
	
	/**
	 * 	@Description: SQL语句追加查询参数部分
	 *	@author: zhangwei(Administrator)[email protected]
	 *	@date: 2022/08/24
	 */
	public void sqlParameterAppend(String appendSQL, String parameter) {
		if(StringUtils.isNotBlank(parameter)) {
			this.fromSQL(appendSQL);
			this.parametes.add(parameter);
		}
	}
	
	/**
	 * 	@Description: 多个参数语句添加,减少了代码行数,但不如单个参数语句添加更友好
	 *	@author: zhangwei(Administrator)[email protected]
	 *	@date: 2022/08/24
	 */
	public void sqlParametersAppend(String appendSQL, String... parameters) {
		if(!StringUtils.isAnyBlank(parameters)) {
			this.fromSQL(appendSQL);
			this.parametes.add(parameters);
		}
	}
	
	/**
	 * 	@Description: like 语句参数添加
	 *	@author: zhangwei(Administrator)[email protected]
	 *	@date: 2022/08/24
	 */
	public void sqlAppendLike(String appendSQL, String parameter) {
		if(StringUtils.isNotBlank(parameter)) {
			this.fromSQL(appendSQL);
			this.parametes.addLike(parameter);
		}
	}
	
	/**
	 * 	@Description: 返回完整的SQL语句
	 *	@author: zhangwei(Administrator)[email protected]
	 *	@date: 2022/08/24
	 */
	public String getSQL() {
		return select.toString().concat(from.toString());
	}
	
	/**
	 * 	@Description: 返回select语句部分
	 *	@author: zhangwei(Administrator)[email protected]
	 *	@date: 2022/08/24
	 */
	public String getSelectSQL() {
		return select.toString();
	}  
	
	/**
	 * 	@Description: 返回from语句部分
	 *	@author: zhangwei(Administrator)[email protected]
	 *	@date: 2022/08/24
	 */
	public String getFromSQL() {
		return from.toString();
	}
}




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