► Install Tomcat 6.x + JDK/JRE + Eclipse 3.5.x(Galileo) under Ubuntu 9.10

在Eclipse下，从安装到使用Derby插件

will posted @ 2010年12月17日 22:27 in Ubuntu with tags Eclipse Derby DataBase Plugin , 14064 阅读

未经允许，请勿转载。文章来源：http://willvking.is-programmer.com

正文：为什么选择Derby？Derby数据库的性能比较：PDF文档，点击下载

本文参考资料：
http://www.cecs.csulb.edu/~monge/classes/share/usingEclipseDerby.html
http://www.ibm.com/developerworks/opensource/library/os-ad-eclipse/
http://db.apache.org/derby/integrate/plugin_howto.html
http://db.apache.org/derby/papers/DerbyTut/ij_intro.html

安装Derby Plugin到Eclipse：
首先从Derby下载页面查找最新官方发布的版本（或者需要的版本），下载derby_core_plugin 和

derby_ui_plugin这两个必须的Eclipse插件下载到计算，并解压缩到Eclipse目录下的plugins文 件夹下。注意，压缩包中所有文件可能都默认在plugin文件夹下，所以解压缩後，將得到plugin文件夹（也可能会叫plugin(1)）下的所有文 件拷贝到eclipse安装目录下的plugin文件夹中。

	被拷贝的文件应该是

org.apache.derby.core_10.6.2, org.apache.derby.ui_1.1.2, 和 org.apache.derby.plugin.doc_1.1.2这样3个名称的（根据下载选择，版本好会有不同）。

使用Derby同Eclipse

：

	首 先，添加DerbyJava项目。运行Eclipse（如果Eclipse在安装Derby前就开着，请重新启动Eclipse）。在Package Explorer中选择Java项目，右键，依次选择Apache Derby，Add Apache Derby nature.到此，添加Derby完成。

	你可以再次在项目上点击右键，Apache Derby，选择sysInfo（Derby System Information）,便能在Eclipse的控制台输出中看到Derby系统信息。如下：

------------------ Java Information ------------------
Java Version:    1.6.0_18
Java Vendor:     Sun Microsystems Inc.
Java home:       /usr/local/jdk1.6.0_18/jre
Java classpath: /windows/E/Computer Study/Software Study/Programming/Eclipse Workspace On Ubuntu 10.10/AccountManagement/bin:/opt/eclipse/plugins/org.apache.derby.core_10.6.2/derbytools.jar:/opt/eclipse/plugins/org.apache.derby.core_10.6.2/derby.jar:/opt/eclipse/plugins/org.apache.derby.core_10.6.2/derbynet.jar:/opt/eclipse/plugins/org.apache.derby.core_10.6.2/derbyclient.jar
OS name:         Linux
OS architecture: i386
OS version:      2.6.35-22-generic
Java user name: knowyourself1010
Java user home: /home/knowyourself1010
Java user dir:   /windows/E/Computer Study/Software Study/Programming/Eclipse Workspace On Ubuntu 10.10/AccountManagement
java.specification.name: Java Platform API Specification
java.specification.version: 1.6
java.runtime.version: 1.6.0_18-b07
--------- Derby Information --------
JRE - JDBC: Java SE 6 - JDBC 4.0
[/opt/eclipse/plugins/org.apache.derby.core_10.6.2/derby.jar] 10.6.2.1 - (999685)
[/opt/eclipse/plugins/org.apache.derby.core_10.6.2/derbytools.jar] 10.6.2.1 - (999685)
[/opt/eclipse/plugins/org.apache.derby.core_10.6.2/derbynet.jar] 10.6.2.1 - (999685)
[/opt/eclipse/plugins/org.apache.derby.core_10.6.2/derbyclient.jar] 10.6.2.1 - (999685)
------------------------------------------------------
----------------- Locale Information -----------------
------------------------------------------------------

在选择sysInfo的同时，能看到一个叫ij(Interactive SQL)的选项，顾名思义，这是Derby提供的结构查询语言脚本的运行工具，用来执行SQL脚本语句。选择它，Eclipse的控制台会显示：

ij version 10.6
ij>

在选择sysInfo的位置选择start Derby Network Server启动Derby网络服务，接着就可以在eclipse控制台中ij>後输入SQL脚本语句了。
首先，按照http://db.apache.org/derby/papers/DerbyTut/ij_intro.html#ij_create 创建一个数据库命令如下：

ij> connect 'jdbc:derby:MyDbTest;create=true';

如果得到：IJ ERROR: Unable to establish connection的提示，可能是你的Derby Network Server没有开启。
如果执行成功，刷新PackageExplorer中的项目目录，便能看到一个名为MyDbTest的文件夹和一个derby.log文件。可以打开derby.log文件瞧瞧。
在ij中输入help;可以查看帮助：

ij> help;

Supported commands include:

PROTOCOL 'JDBC protocol' [ AS ident ];
                               -- sets a default or named protocol
DRIVER 'class for driver';   -- loads the named class
CONNECT 'url for database' [ PROTOCOL namedProtocol ] [ AS connectionName ];
                               -- connects to database URL
                               -- and may assign identifier
SET CONNECTION connectionName; -- switches to the specified connection
SHOW CONNECTIONS;            -- lists all connections
AUTOCOMMIT [ ON | OFF ];     -- sets autocommit mode for the connection
DISCONNECT [ CURRENT | connectionName | ALL ];
                               -- drop current, named, or all connections;
                               -- the default is CURRENT

SHOW SCHEMAS;                -- lists all schemas in the current database
SHOW [ TABLES | VIEWS | PROCEDURES | FUNCTIONS | SYNONYMS ] { IN schema };
                               -- lists tables, views, procedures, functions or synonyms
SHOW INDEXES { IN schema | FROM table };
                               -- lists indexes in a schema, or for a table
SHOW ROLES;                  -- lists all defined roles in the database,
                               -- sorted
SHOW ENABLED_ROLES;          -- lists the enabled roles for the current
                               -- connection (to see current role use
                               -- VALUES CURRENT_ROLE), sorted
SHOW SETTABLE_ROLES;         -- lists the roles which can be set for the
                               -- current connection, sorted
DESCRIBE name;               -- lists columns in the named table

COMMIT;                      -- commits the current transaction
ROLLBACK;                    -- rolls back the current transaction

PREPARE name AS 'SQL-J text'; -- prepares the SQL-J text
EXECUTE { name | 'SQL-J text' } [ USING { name | 'SQL-J text' } ] ;
                               -- executes the statement with parameter
                               -- values from the USING result set row
REMOVE name;                 -- removes the named previously prepared statement

RUN 'filename';              -- run commands from the named file

ELAPSEDTIME [ ON | OFF ];    -- sets elapsed time mode for ij
MAXIMUMDISPLAYWIDTH integerValue;
                               -- sets the maximum display width for
                               -- each column to integerValue

ASYNC name 'SQL-J text';     -- run the command in another thread
WAIT FOR name;               -- wait for result of ASYNC'd command

GET [SCROLL INSENSITIVE] [WITH {HOLD | NOHOLD}] CURSOR name AS 'SQL-J query';
                               -- gets a cursor (JDBC result set) on the query
                               -- the default is a forward-only cursor with holdability
NEXT name;                   -- gets the next row from the named cursor
FIRST name;                  -- gets the first row from the named scroll cursor
LAST name;                   -- gets the last row from the named scroll cursor
PREVIOUS name;               -- gets the previous row from the named scroll cursor
ABSOLUTE integer name;       -- positions the named scroll cursor at the absolute row number
                               -- (A negative number denotes position from the last row.)
RELATIVE integer name;       -- positions the named scroll cursor relative to the current row
                               -- (integer is number of rows)
AFTER LAST name;             -- positions the named scroll cursor after the last row
BEFORE FIRST name;           -- positions the named scroll cursor before the first row
GETCURRENTROWNUMBER name;    -- returns the row number for the current position of the named scroll cursor
                               -- (0 is returned when the cursor is not positioned on a row.)
CLOSE name;                  -- closes the named cursor
LOCALIZEDDISPLAY [ ON | OFF ];
                               -- controls locale sensitive data representation

EXIT;                        -- exits ij
HELP;                        -- shows this message

Any unrecognized commands are treated as potential SQL-J commands and executed directly.

输入show connections;可以看到当前链接,如下：

ij> show connections;
CONNECTION0* - jdbc:derby:MyDbTest
* = current connection

接在来根据ij介绍，在当前数据库（MyDbTest）中创建表derbyDB，并增加修改数据，控制台输入输出如下：

ij> create table derbyDB(num int, addr varchar(40));
0 rows inserted/updated/deleted
ij> insert into derbyDB values (1956,'Webster St.');
1 row inserted/updated/deleted
ij> insert into derbyDB values (1910,'Union St.');
1 row inserted/updated/deleted
ij> select * from derbyDB;
NUM        |ADDR
----------------------------------------------------
1956       |Webster St.
1910       |Union St.

2 rows selected
ij> update derbyDB set num=180,addr='Grand Ave.' where num=1956;
1 row inserted/updated/deleted
ij> select * from derbyDB;
NUM        |ADDR
----------------------------------------------------
180        |Grand Ave.
1910       |Union St.

2 rows selected

依次执行下面命令，断开链接并退出ij：

ij> disconnect;
ij> show connections;
No connections available.
ij> exit;

另，执行SQL脚本文件的命令为：

ij> run 'my_file.sql';

在程序中链接MyDbTest数据库的命令有：

Connection conn =DriverManager.getConnection("jdbc:derby:MyDbTest");
或者：
jdbc:derby:../otherDirectory/MyDbTest
jdbc:derby:directory:MyDbTest
jdbc:derby:jar:(c:/derby/lib/jar2.jar)MyDbTest

更多链接方式请见：http://db.apache.org/derby/docs/dev/devguide/cdevdvlp34964.html

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2024年1月29日 15:26

No.1 먹튀검증 사이트, 먹튀사이트, 검증사이트, 토토사이트, 안전사이트, 메이저사이트, 안전놀이터 정보를 제공하고 있습니다. 먹튀해방으로 여러분들의 자산을 지켜 드리겠습니다. 먹튀검증 전문 커뮤니티 먹튀클린만 믿으세요!!

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베트남 유흥 说:
2024年1月29日 15:38

베트남 남성전용 커뮤니티❣️ 베트남 하이에나 에서 베트남 밤문화를 추천하여 드립니다. 베트남 가라오케, 베트남 VIP마사지, 베트남 이발관, 베트남 황제투어 남자라면 꼭 한번은 경험 해 봐야할 화끈한 밤문화로 모시겠습니다.

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투게더벳 说:
2024年1月31日 19:24

나는 당신의 블로그를 읽었고 그것은 나에게 매우 도움이됩니다. 감사합니다. 향후 업데이트를 위해 사이트를 북마크했습니다.

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볼트카지노가입코드 说:
2024年1月31日 19:44

당신은 여기에 정말 좋은 게시물입니다. 시간을내어 소중한 정보를 게시 해 주셔서 감사합니다. 양질의 콘텐츠는 항상 방문자를 끌어들이는 것입니다.

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달팽이주소 说:
2024年1月31日 20:02

나는 당신의 블로그를 읽었고 그것은 나에게 매우 도움이됩니다. 감사합니다. 향후 업데이트를 위해 사이트를 북마크했습니다.

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쇼미더벳먹튀 说:
2024年1月31日 20:16

배포 한 모든 지식에 다시 한 번 감사드립니다. 나는 그 기사에 매우 관심이 있었고, 인정해야 할 매우 고무적이었습니다. 나는 항상 이와 같은 흥미로운 기사를 접하기 때문에 당신의 사이트를 방문하는 것을 좋아합니다. 훌륭합니다, 대단히 감사합니다. 계속 공유하십시오! 문안 인사

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카림벳먹튀 说:
2024年1月31日 20:37

나는 당신의 블로그를 읽었고 그것은 나에게 매우 도움이됩니다. 감사합니다. 향후 업데이트를 위해 사이트를 북마크했습니다.

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온라인카지노 说:
2024年1月31日 20:57

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강남벳토토 说:
2024年1月31日 21:10

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꽁머니카지노 说:
2024年1月31日 21:24

나는 당신의 블로그를 읽었고 그것은 나에게 매우 도움이됩니다. 감사합니다. 향후 업데이트를 위해 사이트를 북마크했습니다.

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에이전트도메인 说:
2024年1月31日 21:35

다른 모든 유익한 사이트에 감사드립니다. 다른 곳에서는 그런 이상적인 수단으로 작성된 그런 종류의 정보를 얻을 수 있을까요? 지금 막 운영중인 벤처 기업이 있으며 그러한 정보를 찾고있었습니다.

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코인지갑개발 说:
2024年4月24日 15:40

블록체인개발 코인지갑개발 IT컨설팅 메스브레인팀이 항상 당신을 도울 준비가 되어 있습니다. 우리는 마음으로 가치를 창조한다는 철학을 바탕으로 일하며, 들인 노력과 시간에 부흥하는 가치만을 받습니다. 고객이 만족하지 않으면 기꺼이 환불해 드립니다.
https://xn--539awa204jj6kpxc0yl.kr/

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