Class BaseSQLAction

java.lang.Object

org.apache.cayenne.access.jdbc.BaseSQLAction

All Implemented Interfaces:

SQLAction

Direct Known Subclasses:

BatchAction, EJBQLAction, ProcedureAction, SelectAction

public abstract class BaseSQLAction
extends Object
implements SQLAction

A convenience superclass for SQLAction implementations.

Since:

1.2

Field Summary

Fields

Modifier and Type	Field	Description
protected DataNode	dataNode

Constructor Summary

Constructors

Constructor	Description
BaseSQLAction(DataNode dataNode)

Method Summary

Modifier and Type	Method	Description
protected int	getInMemoryOffset(int queryOffset)	Returns a value of the offset that will be used to rewind the ResultSet within the SQL action before reading the result rows.
protected void	readResultSet(ResultSet resultSet, RSColumn[] columns, Query query, OperationObserver delegate)	Helper method to process a ResultSet.

Methods inherited from class Object

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

Methods inherited from interface SQLAction

performAction

Field Details

dataNode

protected DataNode dataNode

Constructor Details

BaseSQLAction

public BaseSQLAction(DataNode dataNode)

Since:

4.0

Method Details

readResultSet

protected void readResultSet(ResultSet resultSet,
 RSColumn[] columns,
 Query query,
 OperationObserver delegate)
                      throws Exception

Helper method to process a ResultSet.

Throws:

Exception

getInMemoryOffset

protected int getInMemoryOffset(int queryOffset)

Returns a value of the offset that will be used to rewind the ResultSet within the SQL action before reading the result rows. The default implementation returns 'queryOffset' argument. If the adapter supports setting offset at the SQL level, this method must be overridden to return zero to suppress manual offset.

Since:

3.0