Class JdbcExamples

java.lang.Object

net.jrodolfo.java_evolution.java01.jdbc.JdbcExamples

public class JdbcExamples
extends Object

Demonstrates the JDBC 1.1 driver-dispatch model introduced in Java 1.1.

Modern JDKs have expanded the original JDBC interfaces with many later methods. Rather than introduce later APIs or a dynamic-proxy compatibility layer into this Java 1.1 example, this class uses small local types that model the original roles: a driver manager selects a driver by URL, and the selected driver creates a connection.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	JdbcExamples.LearningConnection	Minimal connection that exposes the selected URL and metadata.
static final class	JdbcExamples.LearningDatabaseMetaData	Minimal metadata returned by the learning connection.
static final class	JdbcExamples.LearningDriver	Minimal driver contract used by the learning model.
static final class	JdbcExamples.LearningDriverManager	Small model of the JDBC driver-selection role.

Constructor Summary

Constructors

Constructor	Description
JdbcExamples()

Method Summary

Modifier and Type	Method	Description
void	deregisterDriver(JdbcExamples.LearningDriver driver)	Removes a previously registered learning driver.
JdbcExamples.LearningConnection	openConnection(String jdbcUrl)	Opens a connection through the small driver-manager model.
int	registeredLearningDriverCount()
JdbcExamples.LearningDriver	registerLearningDriver(String urlPrefix)	Registers a driver that accepts URLs beginning with the supplied prefix.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

JdbcExamples

public JdbcExamples()

Method Details

registerLearningDriver

public JdbcExamples.LearningDriver registerLearningDriver(String urlPrefix)

Registers a driver that accepts URLs beginning with the supplied prefix.

deregisterDriver

public void deregisterDriver(JdbcExamples.LearningDriver driver)

Removes a previously registered learning driver.

openConnection

public JdbcExamples.LearningConnection openConnection(String jdbcUrl)
                                               throws SQLException

Opens a connection through the small driver-manager model.

Parameters:

jdbcUrl - URL requested by the application

Returns:

connection created by the matching driver

Throws:

SQLException - when no registered driver accepts the URL

registeredLearningDriverCount

public int registeredLearningDriverCount()

Returns:

number of registered learning drivers