package com.ioctest.example;

import java.sql.DriverManager;
import java.awt.List;
import java.sql.Connection;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.LinkedList;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.DatabaseMetaData;

public class MysqlParse {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		//variables used to operate the mysql database
        Connection connection = null;
        Statement statement = null;
        String sql = null;
        ResultSet resultSet = null;
        //the information of mysql database
        String user = "root";
        String password = "12345670";
        String url = "jdbc:mysql://192.168.106.61:3306/game_002";
        //look up the mysql diriver , is it useful ?
        try{
            Class.forName("com.mysql.jdbc.Driver");
        }catch(ClassNotFoundException e){
            System.out.println("mysql driver is not ready ...");
            e.printStackTrace();
        }
        // open a mysql connection to java application
        try{
            connection = DriverManager.getConnection(url,user,password);//url,user,password
        }catch(SQLException e){
            System.out.println("there is sql exception when connecting ...");
            e.printStackTrace();
        }
        
        ArrayList<String> tList = new ArrayList<String>();
        try {  
        		DatabaseMetaData dbmd = connection.getMetaData(); 
            	// 表名列表  
            	String[] types = {"TABLE"};
            	ResultSet rest = dbmd.getTables(null, null, "%", types);
            	while (rest.next()) {  
            		String tablename = rest.getString("TABLE_NAME"); 
            		//System.out.println(tablename);
            		tList.add(tablename);
            	}  
            	
                for (String tn : tList) {
                	System.out.println(tn);
                	try {
                		resultSet = dbmd.getPrimaryKeys(null, null, tn);
                		while(resultSet.next()) {
                		      String name = resultSet.getString("COLUMN_NAME");
                  		      System.out.println("Primykey Column name:" + name );
                		} 
                		
                		resultSet = dbmd.getIndexInfo(null, null, tn, false, false);
                		while (resultSet.next()) {
               		      String name = resultSet.getString("COLUMN_NAME");
              		      System.out.println("Index Column name:" + name );
                		}
                		
                		resultSet = dbmd.getColumns(null, null, tn, null);
                		
//                		 while (resultSet.next()) {
//                		      String name = resultSet.getString("COLUMN_NAME");
//                		      String type = resultSet.getString("TYPE_NAME");
//                		      int size = resultSet.getInt("COLUMN_SIZE");
//
//                		      System.out.println("Column name: [" + name + "]; type: [" + type + "]; size: [" + size + "]");
//                		}
                	} catch (Exception e) {
        				// TODO: handle exception
                		System.out.println(e);
        			}
                	//break;
                }
	           
        	} catch (SQLException e) {  
	            e.printStackTrace();  
           }  

        System.out.println("java connection to mysql is ending...");
    
	}

}