org.springframework.jca.cci.core

Interface RecordExtractor<T>

All Known Implementing Classes:

CciTemplate.SimpleRecordExtractor, 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), javax.resource.cci.ResultSet

Method Summary

Methods

Modifier and Type	Method and Description
T	extractData(Record record) Process the data in the given Record, creating a corresponding result object.

Method Detail

extractData

T extractData(Record record)
              throws 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:

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:

javax.resource.cci.ResultSet