Spring Framework

org.springframework.jca.cci.core
Interface RecordExtractor<T>

All Known Implementing Classes:
MappingRecordOperation.RecordExtractorImpl

public interface RecordExtractor<T>

Callback interface for extracting a result object from a CCI Record instance.

Used for output object creation in CciTemplate. Alternatively, output Records can also be returned to client code as-is. In case of a CCI ResultSet as execution result, you will almost always want to implement a RecordExtractor, to be able to read the ResultSet in a managed fashion, with the CCI Connection still open while reading the ResultSet.

Implementations of this interface perform the actual work of extracting results, but don't need to worry about exception handling. ResourceExceptions will be caught and handled correctly by the CciTemplate class.

Since:
1.2
Author:
Thierry Templier, Juergen Hoeller
See Also:
CciTemplate.execute(javax.resource.cci.InteractionSpec, Record, RecordExtractor), CciTemplate.execute(javax.resource.cci.InteractionSpec, RecordCreator, RecordExtractor), ResultSet

Method Summary
 T extractData(javax.resource.cci.Record record)
          Process the data in the given Record, creating a corresponding result object.
 

Method Detail

extractData

T extractData(javax.resource.cci.Record record)
              throws javax.resource.ResourceException,
                     java.sql.SQLException,
                     DataAccessException
Process the data in the given Record, creating a corresponding result object.

Parameters:
record - the Record to extract data from (possibly a CCI ResultSet)
Returns:
an arbitrary result object, or null if none (the extractor will typically be stateful in the latter case)
Throws:
javax.resource.ResourceException - if thrown by a CCI method, to be auto-converted to a DataAccessException
java.sql.SQLException - if thrown by a ResultSet method, to be auto-converted to a DataAccessException
DataAccessException - in case of custom exceptions
See Also:
ResultSet

Spring Framework