PAS/src/main/java/cn/cslg/pas/service/query/QueryService.java

package cn.cslg.pas.service.query;

import cn.cslg.pas.common.utils.parseQueryToTree.*;
import com.google.gson.Gson;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Service;

import java.io.*;
import java.util.*;

@Service
@Slf4j
@RequiredArgsConstructor(onConstructor_ = {@Lazy})
public class QueryService {
    public String getText(String text) throws Exception {
        treeNode tree = expressManager.getInstance().Parse(text, false);
        String a = this.get(tree);
        System.out.print(this.ToString((operateNode) tree));
        return "";
    }


    public  String get(treeNode node) {
        String a = "(";
        treeNode leftNode = node.getLeft();
        treeNode rightNode = node.getRight();

        if (leftNode instanceof valueNode) {
            a += ((valueNode) leftNode).getvalue() +" "+ ((operateNode)node).getoperate().getShowName()+" ";
        } else {
            a += this.get(leftNode)+" "+ ((operateNode)node).getoperate().getShowName()+" ";
        }

        if (rightNode instanceof valueNode) {
            a += ((valueNode) rightNode).ToString();
        } else {
            a += this.get(rightNode);
        }
        a+=")";
    return  a;
    }

    public String ToString(operateNode node){
        operate operate1 =node.getoperate();
        treeNode Left =node.getLeft();
        treeNode Right =node.getRight();
        String strCode = "";
        if ((operate1.getShowName()!=null))
        {
            strCode = operate1.getShowName();
        }
        else
        {
            strCode = operate1.getCode();
        }

        if(Left != null)
        {
            if((operate1.gettype() == enuType.Logic || operate1.gettype()  == enuType.Assignment ) && (Left.getLeft() != null || Left.getRight() != null))
            {
                strCode = "(" + Left.ToString() +") " + strCode;
            }
            else
            {
                strCode = Left.ToString() +" " + strCode;
            }

        }

        if(Right!= null)
        {
            if ((operate1.gettype() == enuType.Logic || operate1.gettype() == enuType.Assignment ) && (Right.getLeft() != null || Right.getRight() != null))
            {
                strCode = strCode +" (" + Right.ToString()+ ") ";
            }
            else
            {
                strCode = strCode + " " + Right.ToString();
            }

        }

        return strCode;
    }


    public void write() {
        // 创建一个Map对象并添加一些数据
        Map<String, String> map = new HashMap<>();
        map.put("key1", "value1");
        map.put("key2", "value2");
        map.put("key3", "value3");

        // 将Map存储到文件中
        try {
            FileOutputStream fileOut = new FileOutputStream("map.ser");
            ObjectOutputStream out = new ObjectOutputStream(fileOut);
            out.writeObject(map);
            out.close();
            fileOut.close();
            System.out.println("Map已经成功存储到文件中");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static Map<String, Object> readJsonFile(String fileName) {
        Gson gson = new Gson();
        String json = "";
        try {
            File file = new File("target/file/test.json");
            Reader reader = new InputStreamReader(new FileInputStream(file), "utf-8");
            int ch = 0;
            StringBuffer buffer = new StringBuffer();
            while ((ch = reader.read()) != -1) {
                buffer.append((char) ch);
            }
            reader.close();
            json = buffer.toString();
            return gson.fromJson(json, Map.class);
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }

}