org.apache.ojb.broker.platforms

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Java Source Code / Java Documentation » Database ORM » db ojb » org.apache.ojb.broker.platforms 
org.apache.ojb.broker.platforms
Platforms package This package contains classes that provide compatibility to a range of RDBM platforms.

The Platform interface provides callbacks that allow to perform RDBMS Platform specific operations whereever neccessary.

The class PlatformDefaultImpl implements Platform and provides default implementations of all methods.

For each supported Platform Xxx there is a class PlatformXxxImpl which extends PlatformDefaultImpl and may override the methods of the baseclass.

The factory class PlatformFactory can be used to create Platform instances. It uses information from a JdbcConnectionDescriptor to select the appropriate PlatformXxxImpl class.

Patterns applied: Configurable Factory, Strategy, Bridge

Todo: Provide more Platform-Implementations

Java Source File NameTypeComment
BlobWrapper.javaClass Wraps the Oracle BLOB type and makes it accessible via reflection without having to import the Oracle Classes.
ClobWrapper.javaClass Wraps the Oracle CLOB type and makes it accessible via reflection without having to import the Oracle Classes.
Oracle9iLobHandler.javaClass Handles the Oracle LOB problems for 9i.
Platform.javaInterface This interface provides callbacks that allow to perform RDBMS Platform specific operations wherever neccessary.
PlatformDb2Impl.javaClass This class extends PlatformDefaultImpl and defines specific behavior for the DB2 platform.

Many of the database sequence specific properties can be specified using custom attributes within the sequence-manager element.
The database sequence specific properties are generally speaking, see database user guide for detailed description.

Supported properties on sequence creation:

Property Key Property Values
seq.as Database sequence specific property.
Specifies the datatype used for the sequence. Allowed: all numeric datatypes? e.g.
PlatformDefaultImpl.javaClass This class is a concrete implementation of Platform.
PlatformDerbyImpl.javaClass This class defines specific behavior for the Derby platform.
PlatformException.javaClass
PlatformFactory.javaClass this factory class is responsible to create Platform objects that define RDBMS platform specific behaviour.
PlatformFirebirdImpl.javaClass This class extends PlatformDefaultImpl and defines specific behavior for the Firebird platform.
PlatformHsqldbImpl.javaClass This class extends PlatformDefaultImpl and defines specific behavior for the Hsqldb platform.
PlatformInformixImpl.javaClass This class extends PlatformDefaultImpl and defines specific behavior for the Informix platform.
PlatformMaxDBImpl.javaClass
PlatformMsAccessImpl.javaClass
PlatformMsSQLServerImpl.javaClass This class extends PlatformDefaultImpl and defines specific behavior for the Microsoft SQL Server platform.
PlatformMySQLImpl.javaClass
PlatformOracle9iImpl.javaClass This class is a concrete implementation of Platform.
PlatformOracleImpl.javaClass This class is a concrete implementation of Platform.
PlatformPostgreSQLImpl.javaClass This class extends PlatformDefaultImpl and defines specific behavior for the PostgreSQL platform.

Many of the database sequence specific properties can be specified using custom attributes within the sequence-manager element.
The database sequence specific properties are generally speaking, see database user guide for detailed description.

Implementation configuration properties:

Property Key Property Values
sequenceStart DEPRECATED.
PlatformSapdbImpl.javaClass SapDB specific Platform implementation.

Many of the database sequence specific properties can be specified using custom attributes within the sequence-manager element.
The database sequence specific properties are generally speaking, see database user guide for detailed description.

Implementation configuration properties:

Property Key Property Values
sequenceStart DEPRECATED.
PlatformSybaseASAImpl.javaClass This class is a concrete implementation of Platform.
PlatformSybaseASEImpl.javaClass This class extends PlatformSybaseImpl and defines specific behavior for the Sybase ASE platform.
PlatformSybaseImpl.javaClass This class is a concrete implementation of Platform . Provides an base implementation for all Sybase DB server.
PlatformWLOracle9iImpl.javaClass This class is a concrete implementation of Platform.
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