org.apache.taglibs.standard.tag.common.sql.DataSourceWrapper Maven / Gradle / Ivy
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package org.apache.taglibs.standard.tag.common.sql;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.Driver;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.SQLFeatureNotSupportedException;
import java.util.Properties;
import java.util.logging.Logger;
import javax.sql.DataSource;
import org.apache.taglibs.standard.resources.Resources;
/**
* A simple DataSource wrapper for the standard
* DriverManager class.
*
* @author Hans Bergsten
*/
public class DataSourceWrapper implements DataSource {
private Driver driver;
private String jdbcURL;
private String userName;
private String password;
public void setDriverClassName(String driverClassName)
throws ClassNotFoundException, InstantiationException,
IllegalAccessException {
Object instance = Class.forName(driverClassName, true,
Thread.currentThread().getContextClassLoader()).newInstance();
if (instance instanceof Driver) {
driver = (Driver) instance;
}
}
public void setJdbcURL(String jdbcURL) {
this.jdbcURL = jdbcURL;
}
public void setUserName(String userName) {
this.userName = userName;
}
public void setPassword(String password) {
this.password = password;
}
/**
* Returns a Connection using the DriverManager and all
* set properties.
*/
public Connection getConnection() throws SQLException {
Connection conn = null;
if (driver != null) {
Properties props = new Properties();
if (userName != null) {
props.put("user", userName);
}
if (password != null) {
props.put("password", password);
}
conn = driver.connect(jdbcURL, props);
}
if (conn == null) {
if (userName != null) {
conn = DriverManager.getConnection(jdbcURL, userName, password);
} else {
conn = DriverManager.getConnection(jdbcURL);
}
}
return conn;
}
/**
* Always throws a SQLException. Username and password are set
* in the constructor and can not be changed.
*/
public Connection getConnection(String username, String password)
throws SQLException {
throw new SQLException(Resources.getMessage("NOT_SUPPORTED"));
}
/**
* Always throws a SQLException. Not supported.
*/
public int getLoginTimeout() throws SQLException {
throw new SQLException(Resources.getMessage("NOT_SUPPORTED"));
}
/**
* Always throws a SQLException. Not supported.
*/
public PrintWriter getLogWriter() throws SQLException {
throw new SQLException(Resources.getMessage("NOT_SUPPORTED"));
}
/**
* Always throws a SQLException. Not supported.
*/
public void setLoginTimeout(int seconds) throws SQLException {
throw new SQLException(Resources.getMessage("NOT_SUPPORTED"));
}
/**
* Always throws a SQLException. Not supported.
*/
public synchronized void setLogWriter(PrintWriter out) throws SQLException {
throw new SQLException(Resources.getMessage("NOT_SUPPORTED"));
}
/**
* Always return false.
*/
public boolean isWrapperFor(Class iface) throws SQLException {
return false;
}
/**
* Always throws a SQLException. Not supported.
*/
public T unwrap(Class iface) throws SQLException {
throw new SQLException(Resources.getMessage("NOT_SUPPORTED"));
}
/**
* Always throws a SQLFeatureNotSupportedException. Not supported.
* @since jdk1.7
*/
public Logger getParentLogger() throws SQLFeatureNotSupportedException {
throw new SQLFeatureNotSupportedException(
Resources.getMessage("NOT_SUPPORTED"));
}
}