Class BasicEmbeddedDataSource40

java.lang.Object
org.apache.derby.jdbc.BasicEmbeddedDataSource40
All Implemented Interfaces:
Serializable, Wrapper, CommonDataSource, DataSource, EmbeddedDataSourceInterface
Direct Known Subclasses:
BasicEmbeddedConnectionPoolDataSource40, BasicEmbeddedXADataSource40, ReferenceableDataSource
public class BasicEmbeddedDataSource40 extends Object implements DataSource, Serializable, EmbeddedDataSourceInterface
This data source is suitable for an application using embedded Derby, running on Java 8 Compact Profile 2 or higher.

BasicEmbeddedDataSource40 is similar to EmbeddedDataSource, but does not support JNDI naming, i.e. it does not implement javax.naming.Referenceable.

The standard attributes provided are, cf. e.g. table 9.1 in the JDBC 4.2 specification.

  • databaseName
  • dataSourceName
  • description
  • password
  • user
These standard attributes are not supported:
  • networkProtocol
  • portNumber
  • roleName
  • serverName
The embedded Derby driver also supports these attributes:
  • loginTimeout
    • @see javax.sql.CommonDataSource set/get
  • logWriter
    • @see javax.sql.CommonDataSource set/get
  • createDatabase
  • connectionAttributes
  • shutdownDatabase
  • attributesAsPassword

See the specific Derby DataSource implementation for details on their meaning.

See also the JDBC specifications for more details.

See Also:

  • Field Details

  • Constructor Details

    • BasicEmbeddedDataSource40

      public BasicEmbeddedDataSource40()
      Constructs a basic embedded data source. See the class Javadoc.

  • Method Details

    • setDatabaseName

      public void setDatabaseName(String databaseName)
      Set the database name. Setting this property is mandatory. If a database named wombat at g:/db needs to be accessed, database name should be set to "g:/db/wombat". The database will be booted if it is not already running in the system.
      Specified by:
      setDatabaseName in interface EmbeddedDataSourceInterface
      Parameters:
      databaseName - the name of the database

    • getDatabaseName

      public String getDatabaseName()
      Specified by:
      getDatabaseName in interface EmbeddedDataSourceInterface
      Returns:
      the database name set by setDatabaseName(String).

    • getShortDatabaseName

      private String getShortDatabaseName()
      Return database name with ant attributes stripped off.

    • setDataSourceName

      public void setDataSourceName(String dsn)
      Set the data source name. The property is not mandatory. It is used for informational purposes only.
      Specified by:
      setDataSourceName in interface EmbeddedDataSourceInterface
      Parameters:
      dsn - the name of the data source

    • getDataSourceName

      public String getDataSourceName()
      Specified by:
      getDataSourceName in interface EmbeddedDataSourceInterface
      Returns:
      data source name as set in setDataSourceName(String).

    • setDescription

      public void setDescription(String desc)
      Set the data source descripton. This property is not mandatory. It is used for informational purposes only.
      Specified by:
      setDescription in interface EmbeddedDataSourceInterface
      Parameters:
      desc - the description of the data source

    • getDescription

      public String getDescription()
      Specified by:
      getDescription in interface EmbeddedDataSourceInterface
      Returns:
      the description as set in setDescription(String).

    • setUser

      public void setUser(String user)
      Set the user property for the data source.

      This is user name for any data source getConnection() call that takes no arguments.

      Specified by:
      setUser in interface EmbeddedDataSourceInterface
      Parameters:
      user - The user

    • getUser

      public String getUser()
      Specified by:
      getUser in interface EmbeddedDataSourceInterface
      Returns:
      the user name as set by setUser(String).

    • setPassword

      public void setPassword(String password)
      Set the password property for the data source.

      This is user's password for any data source getConnection() call that takes no arguments.

      Specified by:
      setPassword in interface EmbeddedDataSourceInterface
      Parameters:
      password - The password in plain text

    • getPassword

      public String getPassword()
      Specified by:
      getPassword in interface EmbeddedDataSourceInterface
      Returns:
      the password as set in setPassword(String).

    • getLoginTimeout

      public int getLoginTimeout() throws SQLException
      Gets the maximum time in seconds that this data source can wait while attempting to connect to a database. A value of zero means that the timeout is the default system timeout if there is one; otherwise it means that there is no timeout. When a data source object is created, the login timeout is initially zero. See setLoginTimeout(int).
      Specified by:
      getLoginTimeout in interface CommonDataSource
      Specified by:
      getLoginTimeout in interface DataSource
      Returns:
      the data source login time limit
      Throws:
      SQLException - if a database access error occurs.

    • setLoginTimeout

      public void setLoginTimeout(int seconds) throws SQLException
      Sets the maximum time in seconds that this data source will wait while attempting to connect to a database. A value of zero specifies that the timeout is the default system timeout if there is one; otherwise it specifies that there is no timeout. When a data source object is created, the login timeout is initially zero.

      Derby currently ignores this property.

      Specified by:
      setLoginTimeout in interface CommonDataSource
      Specified by:
      setLoginTimeout in interface DataSource
      Parameters:
      seconds - the data source login time limit
      Throws:
      SQLException - if a database access error occurs.

    • getLogWriter

      public PrintWriter getLogWriter() throws SQLException
      Get the log writer for this data source.

      The log writer is a character output stream to which all logging and tracing messages for this data source object instance will be printed. This includes messages printed by the methods of this object, messages printed by methods of other objects manufactured by this object, and so on. Messages printed to a data source specific log writer are not printed to the log writer associated with the java.sql.Drivermanager class. When a data source object is created the log writer is initially null, in other words, logging is disabled.

      Specified by:
      getLogWriter in interface CommonDataSource
      Specified by:
      getLogWriter in interface DataSource
      Returns:
      the log writer for this data source, null if disabled
      Throws:
      SQLException - if a database-access error occurs.

    • setLogWriter

      public void setLogWriter(PrintWriter out) throws SQLException
      Set the log writer for this data source.

      The log writer is a character output stream to which all logging and tracing messages for this data source object instance will be printed. This includes messages printed by the methods of this object, messages printed by methods of other objects manufactured by this object, and so on. Messages printed to a data source specific log writer are not printed to the log writer associated with the java.sql.Drivermanager class. When a data source object is created the log writer is initially null, in other words, logging is disabled.

      Specified by:
      setLogWriter in interface CommonDataSource
      Specified by:
      setLogWriter in interface DataSource
      Parameters:
      out - the new log writer; to disable, set to null
      Throws:
      SQLException - if a database-access error occurs.

    • update

      protected void update()
      Update jdbcurl from attributes set.

    • setCreateDatabase

      public void setCreateDatabase(String create)
      Set this property to create a new database. If this property is not set, the database (identified by databaseName) is assumed to be already existing.
      Specified by:
      setCreateDatabase in interface EmbeddedDataSourceInterface
      Parameters:
      create - if set to the string "create", this data source will try to create a new database of databaseName, or boot the database if one by that name already exists.

    • getCreateDatabase

      public String getCreateDatabase()
      Specified by:
      getCreateDatabase in interface EmbeddedDataSourceInterface
      Returns:
      The string "create" if create is set, or null if not

    • findDriver

      InternalDriver findDriver() throws SQLException
      Return a handle to the internal driver, possibly instantiating it first if it hasn't been booted or if it has been shut down.
      Returns:
      The internal driver handle
      Throws:
      SQLException

    • setConnectionAttributes

      public void setConnectionAttributes(String prop)
      Set this property to pass in more Derby specific connection URL attributes.
      Any attributes that can be set using a property of this DataSource implementation (e.g user, password) should not be set in connection attributes. Conflicting settings in connection attributes and properties of the DataSource will lead to unexpected behaviour.
      Specified by:
      setConnectionAttributes in interface EmbeddedDataSourceInterface
      Parameters:
      prop - set to the list of Derby connection attributes separated by semi-colons. E.g., to specify an encryption bootPassword of "x8hhk2adf", and set upgrade to true, do the following: 
          ds.setConnectionAttributes("bootPassword=x8hhk2adf;upgrade=true");
      See the Derby documentation for complete list.

    • getConnectionAttributes

      public String getConnectionAttributes()
      Specified by:
      getConnectionAttributes in interface EmbeddedDataSourceInterface
      Returns:
      the Derby specific connection URL attributes, see setConnectionAttributes(String).

    • setShutdownDatabase

      public void setShutdownDatabase(String shutdown)
      Set this property if you wish to shutdown the database identified by databaseName.
      Specified by:
      setShutdownDatabase in interface EmbeddedDataSourceInterface
      Parameters:
      shutdown - if set to the string "shutdown", this data source will shutdown the database if it is running.

    • getShutdownDatabase

      public String getShutdownDatabase()
      Specified by:
      getShutdownDatabase in interface EmbeddedDataSourceInterface
      Returns:
      the string "shutdown" if shutdown is set, or null if not, cf. setShutdownDatabase(String).

    • setAttributesAsPassword

      public void setAttributesAsPassword(boolean attributesAsPassword)
      Set attributeAsPassword property to enable passing connection request attributes in the password argument of getConnection(String,String). If the property is set to true then the password argument of the getConnection(String, String) method call is taken to be a list of connection attributes with the same format as the connectionAttributes property.
      Specified by:
      setAttributesAsPassword in interface EmbeddedDataSourceInterface
      Parameters:
      attributesAsPassword - Use true to encode password argument as a set of connection attributes in a connection request.

    • getAttributesAsPassword

      public boolean getAttributesAsPassword()
      Return the value of the attributesAsPassword property, cf. setAttributesAsPassword(boolean).
      Specified by:
      getAttributesAsPassword in interface EmbeddedDataSourceInterface
      Returns:
      the value

    • equals

      public boolean equals(Object other)
      Overrides:
      equals in class Object

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object

    • getConnection

      public Connection getConnection() throws SQLException
      Attempt to establish a database connection.
      Specified by:
      getConnection in interface DataSource
      Returns:
      a Connection to the database
      Throws:
      SQLException - if a database-access error occurs.

    • getConnection

      public Connection getConnection(String username, String password) throws SQLException
      Attempt to establish a database connection with the given username and password. If the attributeAsPassword property is set to true then the password argument is taken to be a list of connection attributes with the same format as the connectionAttributes property.
      Specified by:
      getConnection in interface DataSource
      Parameters:
      username - the database user on whose behalf the Connection is being made
      password - the user's password
      Returns:
      a Connection to the database
      Throws:
      SQLException - if a database-access error occurs.

    • getConnection

      final Connection getConnection(String username, String password, boolean requestPassword) throws SQLException
      Get a user connection: minion method.
      Parameters:
      username - the user name
      password - the password
      requestPassword - true if the password came from the getConnection() call with user and password arguments..
      Returns:
      user connection
      Throws:
      SQLException

    • isWrapperFor

      public boolean isWrapperFor(Class<?> interFace) throws SQLException
      Returns false unless interFace is implemented.
      Specified by:
      isWrapperFor in interface Wrapper
      Parameters:
      interFace - a class defining an interface
      Returns:
      true if this implements the interface or directly or indirectly wraps an object that does
      Throws:
      SQLException - if an error occurs while determining whether this is a wrapper for an object with the given interface

    • unwrap

      public <T> T unwrap(Class<T> iface) throws SQLException
      Returns this if this class implements the specified interface.
      Specified by:
      unwrap in interface Wrapper
      Parameters:
      iface - a class defining an interface
      Returns:
      an object that implements the interface
      Throws:
      SQLException - if no object is found that implements the interface

    • setupResourceAdapter

      protected static ResourceAdapter setupResourceAdapter(EmbeddedXADataSourceInterface ds, ResourceAdapter ra, String user, String password, boolean requestPassword) throws SQLException
      Return a resource adapter. Use ra if non-null and active, else get the one for the data base.
      Parameters:
      ds - The data source
      ra - The cached value if any
      user - The user name
      password - The password in clear text
      requestPassword - If true, use the supplied user and password to boot the database if required
      Returns:
      the resource adapter
      Throws:
      SQLException - An error occurred

    • getParentLogger

      public Logger getParentLogger() throws SQLFeatureNotSupportedException
      /////////////////////////////////////////////////////////////////
      Specified by:
      getParentLogger in interface CommonDataSource
      Throws:
      SQLFeatureNotSupportedException

    • getMonitor

      private static ModuleFactory getMonitor()
      Privileged Monitor lookup. Must be private so that user code can't call this entry point.

    • findService

      private static Object findService(String factoryInterface, String serviceName)
      Privileged service lookup. Must be private so that user code can't call this entry point.