Class BatchAction

java.lang.Object

org.apache.cayenne.access.jdbc.BaseSQLAction

org.apache.cayenne.access.jdbc.BatchAction

All Implemented Interfaces:

SQLAction

Direct Known Subclasses:

PostgresBatchAction, SQLServerBatchAction

public class BatchAction
extends BaseSQLAction

Since:

1.2

Field Summary

Fields

Modifier and Type	Field	Description
protected RowDescriptor	keyRowDescriptor
protected BatchQuery	query
protected boolean	runningAsBatch

Fields inherited from class BaseSQLAction

dataNode

Modifier and Type	Field	Description
protected DataNode	dataNode

Constructor Summary

Constructors

Constructor	Description
BatchAction(BatchQuery query, DataNode dataNode, boolean runningAsBatch)

Method Summary

Modifier and Type	Method	Description
protected boolean	canRunAsBatch()
protected BatchTranslator	createTranslator()
BatchQuery	getQuery()
protected boolean	hasGeneratedKeys()	Returns whether BatchQuery generates any keys.
void	performAction(Connection connection, OperationObserver observer)	Executes a query using a strategy defined by the implementation.
protected PreparedStatement	prepareStatement(Connection connection, String queryStr, DbAdapter adapter, boolean generatedKeys)
protected void	processGeneratedKeys(Statement statement, OperationObserver observer, List<BatchQueryRow> rows)
protected void	processGeneratedKeys(Statement statement, OperationObserver observer, BatchQueryRow row)	Implements generated keys extraction supported in JDBC 3.0 specification.
protected void	runAsBatch(Connection con, BatchTranslator translator, OperationObserver delegate, boolean generatesKeys)
protected void	runAsIndividualQueries(Connection connection, BatchTranslator translator, OperationObserver delegate, boolean generatesKeys)	Executes batch as individual queries over the same prepared statement.
protected boolean	supportsGeneratedKeys(boolean isBatch)

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

runningAsBatch

protected boolean runningAsBatch

query

protected BatchQuery query

keyRowDescriptor

protected RowDescriptor keyRowDescriptor

Constructor Details

BatchAction

public BatchAction(BatchQuery query,
 DataNode dataNode,
 boolean runningAsBatch)

Since:

4.0

Method Details

getQuery

public BatchQuery getQuery()

Returns:

Query which originated this action

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

canRunAsBatch

protected boolean canRunAsBatch()

createTranslator

protected BatchTranslator createTranslator()

runAsBatch

protected void runAsBatch(Connection con,
 BatchTranslator translator,
 OperationObserver delegate,
 boolean generatesKeys)
                   throws Exception

Throws:

Exception

runAsIndividualQueries

protected void runAsIndividualQueries(Connection connection,
 BatchTranslator translator,
 OperationObserver delegate,
 boolean generatesKeys)
                               throws SQLException,
Exception

Executes batch as individual queries over the same prepared statement.

Throws:

SQLException

Exception

prepareStatement

protected PreparedStatement prepareStatement(Connection connection,
 String queryStr,
 DbAdapter adapter,
 boolean generatedKeys)
                                      throws SQLException

Throws:

SQLException

supportsGeneratedKeys

protected boolean supportsGeneratedKeys(boolean isBatch)

hasGeneratedKeys

protected boolean hasGeneratedKeys()

Returns whether BatchQuery generates any keys.

processGeneratedKeys

protected void processGeneratedKeys(Statement statement,
 OperationObserver observer,
 BatchQueryRow row)
                             throws SQLException

Implements generated keys extraction supported in JDBC 3.0 specification.

Throws:

SQLException

Since:

4.0

processGeneratedKeys

protected void processGeneratedKeys(Statement statement,
 OperationObserver observer,
 List<BatchQueryRow> rows)
                             throws SQLException

Throws:

SQLException

Since:

4.2