com.scudata.ide.spl.etl.element.ConnectDB Maven / Gradle / Ivy

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SPL(Structured Process Language) A programming language specially for structured data computing.

There is a newer version: 20240823

package com.scudata.ide.spl.etl.element;

import com.scudata.chart.Consts;
import com.scudata.common.StringUtils;
import com.scudata.ide.spl.etl.EtlConsts;
import com.scudata.ide.spl.etl.ObjectElement;
import com.scudata.ide.spl.etl.ParamInfo;
import com.scudata.ide.spl.etl.ParamInfoList;

/**
 * ?????????༭ connect(db)
 * 
 * @author Joancy
 *
 */
public class ConnectDB extends ObjectElement {
	public String db;
	public String level;
	
	public boolean l;
	public boolean e;

	/**
	 * ??ȡ???ڽ???༭?Ĳ?????Ϣ?б?
	 */
	public ParamInfoList getParamInfoList() {
		ParamInfoList paramInfos = new ParamInfoList();
		ParamInfo.setCurrent(ConnectDB.class, this);

		paramInfos.add(new ParamInfo("db",EtlConsts.INPUT_DB));
		paramInfos.add(new ParamInfo("level",EtlConsts.INPUT_ISOLATIONLEVEL));
		String group = "options";
		paramInfos.add(group, new ParamInfo("l", Consts.INPUT_CHECKBOX));
		paramInfos.add(group, new ParamInfo("e", Consts.INPUT_CHECKBOX));

		return paramInfos;
	}

	/**
	 * ??ȡ??????
	 * ???͵ĳ???????Ϊ
	 * EtlConsts.TYPE_XXX
	 * @return EtlConsts.TYPE_EMPTY
	 */
	public byte getParentType() {
		return EtlConsts.TYPE_EMPTY;
	}

	/**
	 * ??ȡ?ú????ķ???????
	 * @return EtlConsts.TYPE_DB
	 */
	public byte getReturnType() {
		return EtlConsts.TYPE_DB;
	}

	/**
	 * ??ȡ????????SPL????ʽ??ѡ?
	 */
	public String optionString(){
		if(!StringUtils.isValidString(db)){//û??ָ??dbʱ???????ļ????ӣ???ʱѡ??û????
			return null;
		}
		
		StringBuffer sb = new StringBuffer();
		if(e){
			sb.append("e");
		}
		if(l){
			sb.append("l");
		}
		if(level!=null){
			sb.append(level);
		}
		return sb.toString();
	}

	/**
	 * ???Ǹ???????ú?????ѡ??
	 * ?????е?level?????ַ??????ĸ??뼶?𣬸?booleanѡ??ֵ??ͨ?ã???????Ҫ???⴦??
	 * @param options ѡ??
	 */
	public void setOptions(String options){
		if(options==null){
			return;
		}
		boolean isE = options.indexOf("e")>-1;
		if(isE){
			e = true;
			options = options.replace('e', ' ');
		}
		boolean isL = options.indexOf("l")>-1;
		if(isL){
			l = true;
			options = options.replace('l', ' ');
		}
		level = options.trim();
	}


	/**
	 * ??ȡ????????SPL????ʽ?ĺ?????
	 */
	public String getFuncName() {
		return "connect";
	}

	/**
	 * ??ȡ????????SPL????ʽ?ĺ?????
	 * ??setFuncBody???溯????Ȼ?????ʽ?ĸ?ֵҲ???ǻ????
	 */
	public String getFuncBody() {
		if(!StringUtils.isValidString(db)){
			return null;
		}
		return getParamExp(db);
	}

	/**
	 * ???ú?????
	 * @param funcBody ??????
	 */
	public boolean setFuncBody(String funcBody) {
//		Ϊ?˸?ConnectDriver????ֻҪ?????ж??ţ??Ͳ??ǵ?ǰ????
		if(funcBody.indexOf(",")>0){
			return false;
		}
		db = getParam(funcBody);
		return true;
	}

}