Package org.springframework.jca.cci.core
Interface RecordExtractor<T>
- Type Parameters:
T- the result type
- All Known Implementing Classes:
MappingRecordOperation.RecordExtractorImpl
- 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 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
All Methods Instance Methods Abstract Methods Modifier and Type Method Description TextractData(Record record)Process the data in the given Record, creating a corresponding result object.
Method Detail
extractData
@Nullable T extractData(Record record) throws ResourceException, 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
nullif 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 DataAccessExceptionSQLException- if thrown by a ResultSet method, to be auto-converted to a DataAccessExceptionDataAccessException- in case of custom exceptions- See Also:
ResultSet