Pointbase JDBC 简介
今天研究了一下PointBase，感觉是还是很好的，对平台的依赖性很小，而且特别的小，我是仅仅的用了3个jar 包 和一个bat 文件就完美的搞定了一个数据库，搭建仅仅需要3分钟。
搭建过程：
在任何地方找到pbclient44.jar，pbserver44.jar，pbtools44.jar
大家也看到了，为什么我不选用其他版本的jar 包。仅仅选用了4.4版本
那是因为IBM太坏了，5.0以上版本就加了限制，也就是说多了licence，这个不是免费的，也就用不了了。
4.4 版本的就很好，没有这样的限制而且很稳定，下面就开始吧。
@rem ************************************************************************* @rem This script is used to start PointBase @rem ************************************************************************* @echo off set POINTBASE_HOME=.. set POINTBASE_CLASSPATH=%POINTBASE_HOME%\lib\pbserver44.jar;%POINTBASE_HOME%\lib\pbclient44.jar @rem Add PointBase classes to the classpath set CLASSPATH=%POINTBASE_CLASSPATH% @rem Start PointBase "%JAVA_HOME%\bin\java" com.pointbase.net.netServer /port:9092 /d:3 /pointbase.ini=".\pointbase.ini"
database.home=../databases documentation.home=../ transaction.isolationlevel=TRANSACTION_READ_COMMITTED database.pagesize=4096 cache.size=2063 sort.size=1024
好了基本想研究的，我想bat还是能看懂的。
下面这来说明一下JDBC的书写：
package com.pointbase;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;
/**
*
* @author cnchenhl Apr 12, 2011
*/
public class JDBC {
public static void main(String[] args) {
try {
String str = executeSelectSQL("select count(*) from people");
System.out.println(str);
} catch (Exception e) {
e.printStackTrace();package com.pointbase;
/**
* @author cnchenhl Apr 13, 2011
*/
public final class CommonConstants {
public static String USERNAME = null;
public static String PASSWORD = null;
public static String DBURL = null;
public static String FILENAME = "database.properties";
}
}
}
public static Connection getConnection() throws InstantiationException, IllegalAccessException,
ClassNotFoundException, FileNotFoundException, IOException, SQLException {
Class.forName("com.pointbase.jdbc.jdbcUniversalDriver").newInstance();
Properties properties = Configuration.getProperties(CommonConstants.FILENAME);
CommonConstants.USERNAME = properties.getProperty("userName");
CommonConstants.PASSWORD = properties.getProperty("password");
CommonConstants.DBURL = properties.getProperty("url");
Connection conn = DriverManager.getConnection(CommonConstants.DBURL, CommonConstants.USERNAME,
CommonConstants.PASSWORD);
return conn;
}
public static Statement getStatement() throws FileNotFoundException, InstantiationException,
IllegalAccessException, ClassNotFoundException, IOException, SQLException {
Connection conn = getConnection();
Statement stat = conn.createStatement();
return stat;
}
public static String executeSelectSQL(String sql) throws FileNotFoundException, InstantiationException,
IllegalAccessException, ClassNotFoundException, IOException, SQLException {
Statement stat = getStatement();
ResultSet rs = stat.executeQuery(sql);
String str = "";
while(rs.next()){
str = rs.getString(1);
}
return str;
}
}
package com.pointbase;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Properties;
/**
*
* @author cnchenhl
* Apr 13, 2011
*/
public class Configuration {
public static Properties getProperties(String fileName) throws FileNotFoundException, IOException{
Properties pro = new Properties();
File propertyFile = new File(fileName);
pro.load(new BufferedInputStream(new FileInputStream(propertyFile)));
return pro;
}
}
#User Name userName = ××××× #Password password = ××××× #URL of Database url = jdbc:pointbase:server://localhost/sample
好了 大功告成，Pointbase 搭建成功了
只要书写JDBC 就能改变PointBase数据库了
很简单，很强大哦