package com.product.data.entity;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;

/**
 * @Author cheng
 * @Date 2022/2/8 17:43
 * @Desc 查询结果
 */
public class QueryResultEntity {
    /**
     * 结果集
     */
    private List<Map<String, Object>> result = new ArrayList<>();

    private String[] tableName;
    /**
     * 查询的字段集
     */
    private List<String> columnNames;

    public QueryResultEntity(String[] tableName) {
        this.tableName = tableName;
    }

    public void addResult(Map<String, Object> map) {
        if (result != null) {
            result.add(map);
        }
    }


    public List<String> getColumnNames() {
        return columnNames;
    }

    public void setColumnNames(List<String> columnNames) {
        this.columnNames = columnNames;
    }

    public void setColumnNames(String[] columnNames) {
        if (columnNames != null) {
            this.columnNames = new ArrayList<>(Arrays.asList(columnNames));
        }
    }

    public List<Map<String, Object>> getResult() {
        return result;
    }

    public int getSize() {
        return this.result == null ? 0 : this.result.size();
    }


    public String[] getTableName() {
        return tableName;
    }

    public boolean isEmpty() {
        return result.size() <= 0;
    }

    public void clear() {
        this.result = null;
        this.tableName = null;
        this.columnNames = null;
    }
}