org.hibernate.loader.custom

Class NonScalarResultColumnProcessor

java.lang.Object

org.hibernate.loader.custom.NonScalarResultColumnProcessor

public class NonScalarResultColumnProcessor
extends Object

Represents non-scalar returns within the custom query. Most of the heavy lifting for non-scalar results is done within Loader itself.

Author:

Steve Ebersole

Constructor Summary

Constructors

Constructor and Description
NonScalarResultColumnProcessor(int position)

Method Summary

Modifier and Type	Method and Description
Object	extract(Object[] data, ResultSet resultSet, SessionImplementor session) Perform The extraction
void	performDiscovery(org.hibernate.loader.custom.JdbcResultMetadata metadata, List<Type> types, List<String> aliases) Perform discovery, if needed.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NonScalarResultColumnProcessor

public NonScalarResultColumnProcessor(int position)

Method Detail

performDiscovery

public void performDiscovery(org.hibernate.loader.custom.JdbcResultMetadata metadata,
                             List<Type> types,
                             List<String> aliases)

Perform discovery, if needed. Typically discovery activities include looking up the column name in the ResultSet or JDBC type codes.

Parameters:

metadata - Delegate for accessing metadata about the JDBC ResultSet

types - The building List of types

aliases - The building list of column names/aliases

extract

public Object extract(Object[] data,
                      ResultSet resultSet,
                      SessionImplementor session)
               throws SQLException,
                      HibernateException

Perform The extraction

Parameters:

data - All non-scalar results (handled at a higher level than these processors)

resultSet - The JDBC result set.

session - The Hibernate Session

Returns:

The extracted value

Throws:

SQLException - Indicates a problem accessing the JDBC objects

HibernateException - Indicates a higher-level problem already categorized by Hibernate