oracle.toplink.essentials.sessions.DefaultConnector Maven / Gradle / Ivy
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package oracle.toplink.essentials.sessions;
import java.util.*;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.sql.*;
import java.io.*;
import oracle.toplink.essentials.internal.helper.*;
import oracle.toplink.essentials.exceptions.*;
import oracle.toplink.essentials.internal.localization.*;
import oracle.toplink.essentials.internal.security.PrivilegedAccessHelper;
import oracle.toplink.essentials.internal.security.PrivilegedClassForName;
/**
*
* Purpose:Use this Connector to build a java.sql.Connection in the
* "standard" fashion, via the DriverManager.
*
* @author Big Country
* @since TOPLink/Java 2.1
*/
public class DefaultConnector implements Connector {
protected String driverClassName;
protected String driverURLHeader;
protected String databaseURL;
/**
* PUBLIC:
* Construct a Connector with default settings (Sun JDBC-ODBC bridge).
* The database URL will still need to be set.
*/
public DefaultConnector() {
this("sun.jdbc.odbc.JdbcOdbcDriver", "jdbc:odbc:", "");
}
/**
* PUBLIC:
* Construct a Connector with the specified settings.
*/
public DefaultConnector(String driverClassName, String driverURLHeader, String databaseURL) {
this.initialize(driverClassName, driverURLHeader, databaseURL);
}
/**
* INTERNAL:
* Clone the connector.
*/
public Object clone() {
try {
return super.clone();
} catch (Exception exception) {
throw new InternalError("Clone failed");
}
}
/**
* INTERNAL:
* Connect with the specified properties and return the Connection.
* @return java.sql.Connection
*/
public Connection connect(Properties properties) throws DatabaseException {
this.loadDriver();// ensure the driver has been loaded and registered
try {
return DriverManager.getConnection(this.getConnectionString(), properties);
} catch (SQLException exception) {
throw DatabaseException.sqlException(exception);
}
}
/**
* PUBLIC:
* Return the JDBC connection string.
* This is a combination of the driver-specific URL header and the database URL.
*/
public String getConnectionString() {
return this.getDriverURLHeader() + this.getDatabaseURL();
}
/**
* PUBLIC:
* Provide the details of my connection information. This is primarily for JMX runtime services.
* @return java.lang.String
*/
public String getConnectionDetails() {
return this.getConnectionString();
}
/**
* PUBLIC:
* The database URL is the JDBC URL for the database server.
* The driver header is not be included in this URL
* (e.g. "dbase files"; not "jdbc:odbc:dbase files").
*/
public String getDatabaseURL() {
return databaseURL;
}
/**
* PUBLIC:
* The driver class is the name of the Java class for the JDBC driver being used
* (e.g. "sun.jdbc.odbc.JdbcOdbcDriver").
*/
public String getDriverClassName() {
return driverClassName;
}
/**
* PUBLIC:
* The driver URL header is the string predetermined by the JDBC driver to be
* part of the URL connection string, (e.g. "jdbc:odbc:").
* This is required to connect to the database.
*/
public String getDriverURLHeader() {
return driverURLHeader;
}
/**
* INTERNAL:
* Initialize the connector with the specified settings.
*/
protected void initialize(String driverClassName, String driverURLHeader, String databaseURL) {
this.setDriverClassName(driverClassName);
this.setDriverURLHeader(driverURLHeader);
this.setDatabaseURL(databaseURL);
}
/**
* INTERNAL:
* Ensure that the driver has been loaded and registered with the
* DriverManager. Just loading the class should cause the static
* initialization code to do the necessary registration.
* Return the loaded driver Class.
*/
protected Class loadDriver() throws DatabaseException {
// CR#... The correct class loader must be used to load the class,
// not that Class.forName must be used to initialize the class a simple loadClass may not.
try {
if (PrivilegedAccessHelper.shouldUsePrivilegedAccess()){
try {
return (Class)AccessController.doPrivileged(new PrivilegedClassForName(this.getDriverClassName(), true, ConversionManager.getDefaultManager().getLoader()));
} catch (PrivilegedActionException exception) {
throw DatabaseException.configurationErrorClassNotFound(this.getDriverClassName()); }
} else {
return oracle.toplink.essentials.internal.security.PrivilegedAccessHelper.getClassForName(this.getDriverClassName(), true, ConversionManager.getDefaultManager().getLoader());
}
} catch (ClassNotFoundException exception) {
throw DatabaseException.configurationErrorClassNotFound(this.getDriverClassName());
}
}
/**
* PUBLIC:
* The database URL is the JDBC URL for the database server.
* The driver header is not be included in this URL
* (e.g. "dbase files"; not "jdbc:odbc:dbase files").
*/
public void setDatabaseURL(String databaseURL) {
this.databaseURL = databaseURL;
}
/**
* PUBLIC:
* The driver class is the name of the Java class for the JDBC driver being used
* (e.g. "sun.jdbc.odbc.JdbcOdbcDriver").
*/
public void setDriverClassName(String driverClassName) {
this.driverClassName = driverClassName;
}
/**
* PUBLIC:
* The driver URL header is the string predetermined by the JDBC driver to be
* part of the URL connection string, (e.g. "jdbc:odbc:").
* This is required to connect to the database.
*/
public void setDriverURLHeader(String driverURLHeader) {
this.driverURLHeader = driverURLHeader;
}
/**
* PUBLIC:
* Print connection string.
*/
public String toString() {
return oracle.toplink.essentials.internal.helper.Helper.getShortClassName(getClass()) + "(" + getConnectionString() + ")";
}
/**
* INTERNAL:
* Print something useful on the log.
*/
public void toString(PrintWriter writer) {
writer.println(ToStringLocalization.buildMessage("datasource_URL", (Object[])null) + "=> \"" + this.getConnectionString() + "\"");
}
}