Class SelectAction

java.lang.Object

org.apache.cayenne.access.jdbc.BaseSQLAction

org.apache.cayenne.access.jdbc.SelectAction

All Implemented Interfaces:

SQLAction

Direct Known Subclasses:

DB2SelectAction, DerbySelectAction, FirebirdSelectAction, H2SelectAction, IngresSelectAction, SQLiteSelectAction, SQLServerSelectAction

public class SelectAction
extends BaseSQLAction

A SQLAction that handles SelectQuery execution.

Since:

1.2

Field Summary

Fields

Modifier and Type	Field	Description
protected Select<?>	query
protected QueryMetadata	queryMetadata

Fields inherited from class BaseSQLAction

dataNode

Modifier and Type	Field	Description
protected DataNode	dataNode

Constructor Summary

Constructors

Constructor	Description
SelectAction(Select<?> query, DataNode dataNode)

Method Summary

Modifier and Type	Method	Description
void	performAction(Connection connection, OperationObserver observer)	Executes a query using a strategy defined by the implementation.

Methods inherited from class BaseSQLAction

getInMemoryOffset, readResultSet

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, RowDescriptor descriptor, 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

Field Details

query

protected Select<?> query

queryMetadata

protected QueryMetadata queryMetadata

Constructor Details

SelectAction

public SelectAction(Select<?> query,
 DataNode dataNode)

Since:

4.0

Method Details

performAction

public void performAction(Connection connection,
 OperationObserver observer)
                   throws Exception

Description copied from interface: SQLAction

Executes a query using a strategy defined by the implementation.

Throws:

Exception