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• org.springframework.jdbc.support.lob: Javadoc index of package org.springframework.jdbc.support.lob.


Package Samples:

• org.springframework.jdbc.support.lob

Classes:

• LobHandler: Abstraction for handling large binary fields and large text fields in specific databases, no matter if represented as simple types or Large OBjects. Its main purpose is to isolate Oracle's peculiar handling of LOBs in OracleLobHandler; most other databases should work with DefaultLobHandler. Provides accessor methods for BLOBs and CLOBs, and acts as factory for LobCreator instances, to be used as sessions for creating BLOBs or CLOBs. LobCreators are typically instantiated for each statement execution or for each transaction. They are not thread-safe because they might track allocated database resources ...
• OracleLobHandler: LobHandler implementation for Oracle databases. Uses proprietary API to create oracle.sql.BLOB and oracle.sql.CLOB instances, as necessary when working with Oracle's JDBC driver. Developed and tested on Oracle 9i. While most databases are able to work with DefaultLobHandler, Oracle just accepts Blob/Clob instances created via its own proprietary BLOB/CLOB API, and additionally doesn't accept large streams for PreparedStatement's corresponding setter methods. Therefore, you need to use a strategy like this LobHandler implementation. Needs to work on a native JDBC Connection, to be able to cast it ...
• LobCreator: Interface that abstracts potentially database-specific creation of large binary fields and large text fields. Does not work with java.sql.Blob and java.sql.Clob instances in the API, as some JDBC drivers do not support these types as such. A LobCreator represents a session for creating BLOBs: It is not thread-safe and needs to be instantiated for each statement execution or for each transaction. Each LobCreator needs to be closed after completion. For convenient working with a PreparedStatement and a LobCreator, consider JdbcTemplate with a AbstractLobCreatingPreparedStatementCallback implementation. ...
• DefaultLobHandler: Default implementation of the LobHandler interface. Invokes the direct accessor methods that java.sql.ResultSet and java.sql.PreparedStatement offer. This LobHandler should work for any JDBC driver that is JDBC compliant in terms of the spec's suggestions regarding simple BLOB and CLOB handling.
• AbstractLobHandler: Abstract base class for LobHandler implementations. Implements all accessor methods for column names through a column lookup and delegating to the corresponding accessor that takes a column index.

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