org.hibernate.loader.internal

Class ScrollableResultSetProcessorImpl

java.lang.Object

org.hibernate.loader.internal.ScrollableResultSetProcessorImpl

All Implemented Interfaces:

ScrollableResultSetProcessor

public class ScrollableResultSetProcessorImpl
extends Object
implements ScrollableResultSetProcessor

Constructor Summary

Constructors

Constructor and Description
ScrollableResultSetProcessorImpl()

Method Summary

Methods

Modifier and Type	Method and Description
Object	extractLogicalRowForward(ResultSet resultSet, SessionImplementor session, QueryParameters queryParameters) Given a scrollable ResultSet, extract a logical row.
Object	extractLogicalRowReverse(ResultSet resultSet, SessionImplementor session, QueryParameters queryParameters, boolean isLogicallyAfterLast) Like ScrollableResultSetProcessor.extractLogicalRowForward(java.sql.ResultSet, org.hibernate.engine.spi.SessionImplementor, org.hibernate.engine.spi.QueryParameters) but here moving through the ResultSet in reverse.
Object	extractSingleRow(ResultSet resultSet, SessionImplementor session, QueryParameters queryParameters) Give a ResultSet, extract just a single result row.

Methods inherited from class java.lang.Object

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

Constructor Detail

ScrollableResultSetProcessorImpl

public ScrollableResultSetProcessorImpl()

Method Detail

extractSingleRow

public Object extractSingleRow(ResultSet resultSet,
                      SessionImplementor session,
                      QueryParameters queryParameters)

Description copied from interface: ScrollableResultSetProcessor

Give a ResultSet, extract just a single result row. Copy of Loader.loadSingleRow(ResultSet, SessionImplementor, QueryParameters, boolean) but dropping the 'returnProxies' (that method has only one use in the entire codebase and it always passes in false...)

Specified by:

extractSingleRow in interface ScrollableResultSetProcessor

Parameters:

resultSet - The result set being processed.

session - The originating session

queryParameters - The "parameters" used to build the query

Returns:

The extracted result row

extractLogicalRowForward

public Object extractLogicalRowForward(ResultSet resultSet,
                              SessionImplementor session,
                              QueryParameters queryParameters)

Description copied from interface: ScrollableResultSetProcessor

Given a scrollable ResultSet, extract a logical row. The assumption here is that the ResultSet is already properly ordered to account for any to-many fetches. Multiple ResultSet rows are read into a single query result "row". Copy of Loader.loadSequentialRowsForward(ResultSet, SessionImplementor, QueryParameters, boolean) but dropping the 'returnProxies' (that method has only one use in the entire codebase and it always passes in false...)

Specified by:

extractLogicalRowForward in interface ScrollableResultSetProcessor

Parameters:

resultSet - The result set being processed.

session - The originating session

queryParameters - The "parameters" used to build the query

Returns:

The extracted result row

extractLogicalRowReverse

public Object extractLogicalRowReverse(ResultSet resultSet,
                              SessionImplementor session,
                              QueryParameters queryParameters,
                              boolean isLogicallyAfterLast)

Description copied from interface: ScrollableResultSetProcessor

Like ScrollableResultSetProcessor.extractLogicalRowForward(java.sql.ResultSet, org.hibernate.engine.spi.SessionImplementor, org.hibernate.engine.spi.QueryParameters) but here moving through the ResultSet in reverse. Copy of Loader.loadSequentialRowsReverse(ResultSet, SessionImplementor, QueryParameters, boolean, boolean) but dropping the 'returnProxies' (that method has only one use in the entire codebase and it always passes in false...). todo : is 'logicallyAfterLastRow really needed? Can't that be deduced? In fact pretty positive it is not needed.

Specified by:

extractLogicalRowReverse in interface ScrollableResultSetProcessor

Parameters:

resultSet - The result set being processed.

session - The originating session

queryParameters - The "parameters" used to build the query

isLogicallyAfterLast - Is the result set currently positioned after the last row; again, is this really needed? How is it any diff

Returns:

The extracted result row