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Java Source Code / Java Documentation » J2EE » spring framework 2.5 » org.springframework.jdbc.support.lob

Source Cross Reference Class Diagram Java Document (Java Doc)

org.springframework.jdbc.support.lob .LobCreator

LobCreator

public interface LobCreator (Code)

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. See the latter's javadoc for details.
author:
   Juergen Hoeller
since:
   04.12.2003
See Also:   LobCreator.close
See Also:   LobHandler.getLobCreator
See Also:   org.springframework.jdbc.core.support.AbstractLobCreatingPreparedStatementCallback
See Also:   DefaultLobHandler.DefaultLobCreator
See Also:   OracleLobHandler.OracleLobCreator
See Also:   java.sql.PreparedStatement.setBlob
See Also:   java.sql.PreparedStatement.setClob
See Also:   java.sql.PreparedStatement.setBytes
See Also:   java.sql.PreparedStatement.setBinaryStream
See Also:   java.sql.PreparedStatement.setString
See Also:   java.sql.PreparedStatement.setAsciiStream
See Also:   java.sql.PreparedStatement.setCharacterStream

Method Summary
void	close() Close this LobCreator session and free its temporarily created BLOBs and CLOBs.
void	setBlobAsBinaryStream(PreparedStatement ps, int paramIndex, InputStream contentStream, int contentLength) Set the given content as binary stream on the given statement, using the given parameter index.
void	setBlobAsBytes(PreparedStatement ps, int paramIndex, byte[] content) Set the given content as bytes on the given statement, using the given parameter index.
void	setClobAsAsciiStream(PreparedStatement ps, int paramIndex, InputStream asciiStream, int contentLength) Set the given content as ASCII stream on the given statement, using the given parameter index.
void	setClobAsCharacterStream(PreparedStatement ps, int paramIndex, Reader characterStream, int contentLength) Set the given content as character stream on the given statement, using the given parameter index.
void	setClobAsString(PreparedStatement ps, int paramIndex, String content) Set the given content as String on the given statement, using the given parameter index.

Method Detail

close
void close()(Code)
	Close this LobCreator session and free its temporarily created BLOBs and CLOBs. Will not need to do anything if using PreparedStatement's standard methods, but might be necessary to free database resources if using proprietary means. NOTE: Needs to be invoked after the involved PreparedStatements have been executed or the affected O/R mapping sessions have been flushed. Else, the database resources for the temporary BLOBs might stay allocated.

setBlobAsBinaryStream
void setBlobAsBinaryStream(PreparedStatement ps, int paramIndex, InputStream contentStream, int contentLength) throws SQLException(Code)
	Set the given content as binary stream on the given statement, using the given parameter index. Might simply invoke `PreparedStatement.setBinaryStream` or create a Blob instance for it, depending on the database and driver. Parameters: ps - the PreparedStatement to the set the content on Parameters: paramIndex - the parameter index to use Parameters: contentStream - the content as binary stream, or `null` for SQL NULL throws: SQLException - if thrown by JDBC methods See Also: java.sql.PreparedStatement.setBinaryStream

setBlobAsBytes
void setBlobAsBytes(PreparedStatement ps, int paramIndex, byte[] content) throws SQLException(Code)
	Set the given content as bytes on the given statement, using the given parameter index. Might simply invoke `PreparedStatement.setBytes` or create a Blob instance for it, depending on the database and driver. Parameters: ps - the PreparedStatement to the set the content on Parameters: paramIndex - the parameter index to use Parameters: content - the content as byte array, or `null` for SQL NULL throws: SQLException - if thrown by JDBC methods See Also: java.sql.PreparedStatement.setBytes

setClobAsAsciiStream
void setClobAsAsciiStream(PreparedStatement ps, int paramIndex, InputStream asciiStream, int contentLength) throws SQLException(Code)
	Set the given content as ASCII stream on the given statement, using the given parameter index. Might simply invoke `PreparedStatement.setAsciiStream` or create a Clob instance for it, depending on the database and driver. Parameters: ps - the PreparedStatement to the set the content on Parameters: paramIndex - the parameter index to use Parameters: asciiStream - the content as ASCII stream, or `null` for SQL NULL throws: SQLException - if thrown by JDBC methods See Also: java.sql.PreparedStatement.setAsciiStream

setClobAsCharacterStream
void setClobAsCharacterStream(PreparedStatement ps, int paramIndex, Reader characterStream, int contentLength) throws SQLException(Code)
	Set the given content as character stream on the given statement, using the given parameter index. Might simply invoke `PreparedStatement.setCharacterStream` or create a Clob instance for it, depending on the database and driver. Parameters: ps - the PreparedStatement to the set the content on Parameters: paramIndex - the parameter index to use Parameters: characterStream - the content as character stream, or `null` for SQL NULL throws: SQLException - if thrown by JDBC methods See Also: java.sql.PreparedStatement.setCharacterStream

setClobAsString
void setClobAsString(PreparedStatement ps, int paramIndex, String content) throws SQLException(Code)
	Set the given content as String on the given statement, using the given parameter index. Might simply invoke `PreparedStatement.setString` or create a Clob instance for it, depending on the database and driver. Parameters: ps - the PreparedStatement to the set the content on Parameters: paramIndex - the parameter index to use Parameters: content - the content as String, or `null` for SQL NULL throws: SQLException - if thrown by JDBC methods See Also: java.sql.PreparedStatement.setBytes

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