EmbeddedDriver (Apache Derby V10.14 Internals)

java.lang.Object
- org.apache.derby.jdbc.EmbeddedDriver

All Implemented Interfaces:

java.sql.Driver
```
public class EmbeddedDriver
extends java.lang.Object
implements java.sql.Driver
```
The embedded JDBC driver (Type 4) for Derby.
The driver automatically supports the correct JDBC specification version for the Java Virtual Machine's environment.
- JDBC 4.0 - Java SE 6
- JDBC 3.0 - Java 2 - JDK 1.4, J2SE 5.0
Loading this JDBC driver boots the database engine within the same Java virtual machine.
The correct code to load the Derby engine using this driver is (with approriate try/catch blocks):
```
         Class.forName("org.apache.derby.jdbc.EmbeddedDriver").newInstance();

         // or

     new org.apache.derby.jdbc.EmbeddedDriver();

    
        
```
When loaded in this way, the class boots the actual JDBC driver indirectly. The JDBC specification recommends the Class.ForName method without the .newInstance() method call, but adding the newInstance() guarantees that Derby will be booted on any Java Virtual Machine.
Note that you do not need to manually load the driver this way if you are running on Jave SE 6 or later. In that environment, the driver will be automatically loaded for you when your application requests a connection to a Derby database.
Any initial error messages are placed in the PrintStream supplied by the DriverManager. If the PrintStream is null error messages are sent to System.err. Once the Derby engine has set up an error logging facility (by default to derby.log) all subsequent messages are sent to it.
By convention, the class used in the Class.forName() method to boot a JDBC driver implements java.sql.Driver. This class is not the actual JDBC driver that gets registered with the Driver Manager. It proxies requests to the registered Derby JDBC driver.
See Also:

DriverManager, DriverManager.getLogStream(), Driver, SQLException

Constructor Summary

Constructors
Constructor Description

EmbeddedDriver()

Constructors
Constructor	Description
`EmbeddedDriver()`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`acceptsURL(java.lang.String url)`	Accept anything that starts with `jdbc:derby:`.
`(package private) static void`	`boot()`
`java.sql.Connection`	`connect(java.lang.String url, java.util.Properties info)`	Connect to the URL if possible
`private java.sql.Driver`	`getDriverModule()`	Lookup the booted driver module appropriate to our JDBC level.
`int`	`getMajorVersion()`	Returns the driver's major version number.
`int`	`getMinorVersion()`	Returns the driver's minor version number.
`java.util.logging.Logger`	`getParentLogger()`
`java.sql.DriverPropertyInfo[]`	`getPropertyInfo(java.lang.String url, java.util.Properties info)`	Returns an array of DriverPropertyInfo objects describing possible properties.
`boolean`	`jdbcCompliant()`	Report whether the Driver is a genuine JDBC COMPLIANT (tm) driver.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - EmbeddedDriver
```
public EmbeddedDriver()
```
- Method Detail
  - acceptsURL
```
public boolean acceptsURL(java.lang.String url)
                   throws java.sql.SQLException
```
    Accept anything that starts with jdbc:derby:.
    
    Specified by:
    
    acceptsURL in interface java.sql.Driver
    
    Throws:
    
    java.sql.SQLException - if a database-access error occurs.
    
    See Also:
    
    Driver
  - connect
```
public java.sql.Connection connect(java.lang.String url,
                                   java.util.Properties info)
                            throws java.sql.SQLException
```
    Connect to the URL if possible
    
    Specified by:
    
    connect in interface java.sql.Driver
    
    Throws:
    
    java.sql.SQLException - illegal url or problem with connectiong
    
    See Also:
    
    Driver
  - getPropertyInfo
```
public java.sql.DriverPropertyInfo[] getPropertyInfo(java.lang.String url,
                                                     java.util.Properties info)
                                              throws java.sql.SQLException
```
    Returns an array of DriverPropertyInfo objects describing possible properties.
    
    Specified by:
    
    getPropertyInfo in interface java.sql.Driver
    
    Throws:
    
    java.sql.SQLException - if a database-access error occurs.
    
    See Also:
    
    Driver
  - getMajorVersion
```
public int getMajorVersion()
```
    Returns the driver's major version number.
    
    Specified by:
    
    getMajorVersion in interface java.sql.Driver
    
    See Also:
    
    Driver
  - getMinorVersion
```
public int getMinorVersion()
```
    Returns the driver's minor version number.
    
    Specified by:
    
    getMinorVersion in interface java.sql.Driver
    
    See Also:
    
    Driver
  - jdbcCompliant
```
public boolean jdbcCompliant()
```
    Report whether the Driver is a genuine JDBC COMPLIANT (tm) driver.
    
    Specified by:
    
    jdbcCompliant in interface java.sql.Driver
    
    See Also:
    
    Driver
  - getDriverModule
```
private java.sql.Driver getDriverModule()
                                 throws java.sql.SQLException
```
    Lookup the booted driver module appropriate to our JDBC level.
    
    Throws:
    
    java.sql.SQLException
  - boot
```
static void boot()
```
  - getParentLogger
```
public java.util.logging.Logger getParentLogger()
                                         throws java.sql.SQLFeatureNotSupportedException
```
    Specified by:
    
    getParentLogger in interface java.sql.Driver
    
    Throws:
    
    java.sql.SQLFeatureNotSupportedException

Class EmbeddedDriver

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

EmbeddedDriver

Method Detail

acceptsURL

connect

getPropertyInfo

getMajorVersion

getMinorVersion

jdbcCompliant

getDriverModule

boot

getParentLogger