wukenaihe / db-meta-example

db-meta-example

Relational database metadata crawl library

The following databases are currently supported:

• Mysql
• Oracle
• Sql server

Dependency

• logback-classic
• ojdbc6(option)
• mysql-connector-java(option)
• jtds(option)
• c3p0(option)
• ...

Use with Maven

Pom.xml

<repositories>
		<repository>
			<id>clojars</id>
			<name>Clojars repository</name>
			<url>https://clojars.org/repo</url>
		</repository>
</repositories>

<dependencies>
		<dependency>
			<groupId>org.clojars.xumh</groupId>
			<artifactId>db-meta</artifactId>
			<version>0.0.1-Release</version>
		</dependency>
</dependencies>

You can also download the jar and install it by yourself. here

Example Usage

Use without Spring

public static void main(String[] args) {
  //create a datasource
	MysqlDataSource datasource = new MysqlDataSource();
	datasource.setServerName("localhost");
	datasource.setPort(3306);
	datasource.setDatabaseName("dctest");
	datasource.setUser("root");
	datasource.setPassword("123456");
	
	//instance the metaloader
	MetaLoader metaLoader=new MetaLoaderImpl(datasource);
	Set<String> tableNames=metaLoader.getTableNames();
	System.out.println(tableNames);
	
	//get a table
	Table table=metaLoader.getTable("des");
	PrintUtils.printTable(table);
	
	//get procedures
	 Map<String, Procedure> procedures=metaLoader.getProcedures();
}

Use with Spring

sprint.xml

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
		destroy-method="close">
		<!--mysql com.mysql.jdbc.Driver jdbc:mysql://172.18.110.3:3306/dcmeta -->
		<!--oracle oracle.jdbc.driver.OracleDriver jdbc:oracle:thin:@192.168.2.11:1521:ORCL -->
		<!-- sql server net.sourceforge.jtds.jdbc.Driver jdbc:jtds:sqlserver://127.0.0.1:1433;databaseName=zhgs -->
		<property name="driverClassName">
			<value>com.mysql.jdbc.Driver</value>
		</property>
		<property name="url">
			<value>jdbc:mysql://172.18.110.3:3306/dxmeta</value>
		</property>
		<property name="username">
			<value>root</value>
		</property>
		<property name="password">
			<value>123456</value>
		</property>
		<property name="initialSize">
			<value>0</value>
		</property>
		<property name="maxActive">
			<value>4</value>
		</property>
		<property name="maxIdle">
			<value>4</value>
		</property>
	</bean>
	<bean id="metaLoader" class="com.cgs.db.meta.core.MetaLoaderImpl">
		<property name="dataSource" ref="dataSource"></property>
	</bean>

SprintTest.java

public static void main(String[] args) {
	ApplicationContext context = new ClassPathXmlApplicationContext("config.xml");
	MetaLoader metaLoader = (MetaLoader) context.getBean("metaLoader");

	Set<String> tableNames = metaLoader.getTableNames();
	System.out.println(tableNames);

	Schema schema = metaLoader.getSchema();
	Map<String, Table> tables = schema.getTables();

	Set<String> keys = tables.keySet();
	for (String string : keys) {
		Table t = tables.get(string);
		PrintUtils.printTable(t);
	}
}