org.springframework.jdbc.support

Interface DatabaseMetaDataCallback<T>

Type Parameters:

T - the result type

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface DatabaseMetaDataCallback<T>

A callback interface used by the JdbcUtils class. Implementations of this interface perform the actual work of extracting database meta-data, but don't need to worry about exception handling. SQLExceptions will be caught and handled correctly by the JdbcUtils class.

Author:

Thomas Risberg, Juergen Hoeller

See Also:

JdbcUtils.extractDatabaseMetaData(javax.sql.DataSource, DatabaseMetaDataCallback)

Method Summary

Modifier and Type	Method and Description
T	processMetaData(DatabaseMetaData dbmd) Implementations must implement this method to process the meta-data passed in.

Method Detail

processMetaData

T processMetaData(DatabaseMetaData dbmd)
           throws SQLException,
                  MetaDataAccessException

Implementations must implement this method to process the meta-data passed in. Exactly what the implementation chooses to do is up to it.

Parameters:

dbmd - the DatabaseMetaData to process

Returns:

a result object extracted from the meta-data (can be an arbitrary object, as needed by the implementation)

Throws:

SQLException - if an SQLException is encountered getting column values (that is, there's no need to catch SQLException)

MetaDataAccessException - in case of other failures while extracting meta-data (for example, reflection failure)