Package org.eclipse.persistence.internal.databaseaccess

Class DynamicSQLBatchWritingMechanism

java.lang.Object

org.eclipse.persistence.internal.databaseaccess.BatchWritingMechanism

org.eclipse.persistence.internal.databaseaccess.DynamicSQLBatchWritingMechanism

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

public class DynamicSQLBatchWritingMechanism
extends BatchWritingMechanism

INTERNAL: DynamicSQLBatchWritingMechanism is a private class, used by the DatabaseAccessor. It provides the required behavior for batching statements, for write, with parameter binding turned off.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected long	batchSize	This attribute is used to store the maximum length of all strings batched together
protected DatabaseCall	lastCallAppended
protected java.util.List<java.lang.String>	sqlStrings	This variable is used to store the SQLStrings that are being batched
protected boolean	usesOptimisticLocking	Records if this batch uses optimistic locking.

Fields inherited from class org.eclipse.persistence.internal.databaseaccess.BatchWritingMechanism

databaseAccessor, executionCount, maxBatchSize, queryTimeoutCache, statementCount

Constructor Summary

Constructors

Constructor	Description
DynamicSQLBatchWritingMechanism(DatabaseAccessor databaseAccessor)

Method Summary

Modifier and Type	Method	Description
void	appendCall(AbstractSession session, DatabaseCall dbCall)	INTERNAL: This method is called by the DatabaseAccessor to add this statement to the list of statements being batched.
void	clear()	INTERNAL: This method is used to clear the batched statements without the need to execute the statements first This is used in the case of rollback.
void	executeBatchedStatements(AbstractSession session)	INTERNAL: This method is used by the DatabaseAccessor to execute and clear the batched statements in the case that a non batchable statement is being executed
protected java.sql.PreparedStatement	prepareBatchStatement(AbstractSession session)	INTERNAL: This method is used to build the batch statement by concatenating the strings together.
protected java.sql.Statement	prepareJDK12BatchStatement(AbstractSession session)	INTERNAL: This method is used to build the batch statement for the JDBC2.0 specification
protected void	switchMechanisms(AbstractSession session, DatabaseCall dbCall)	INTERNAL: This method is used to switch from this mechanism to the alternate automatically

Methods inherited from class org.eclipse.persistence.internal.databaseaccess.BatchWritingMechanism

cacheQueryTimeout, clearCacheQueryTimeout, clone, getMaxBatchSize, initialize, setAccessor, setMaxBatchSize

Methods inherited from class java.lang.Object

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

Field Detail

sqlStrings

protected java.util.List<java.lang.String> sqlStrings

This variable is used to store the SQLStrings that are being batched

batchSize

protected long batchSize

This attribute is used to store the maximum length of all strings batched together

usesOptimisticLocking

protected boolean usesOptimisticLocking

Records if this batch uses optimistic locking.

lastCallAppended

protected DatabaseCall lastCallAppended

Constructor Detail

DynamicSQLBatchWritingMechanism

public DynamicSQLBatchWritingMechanism(DatabaseAccessor databaseAccessor)

Method Detail

appendCall

public void appendCall(AbstractSession session,
                       DatabaseCall dbCall)

INTERNAL: This method is called by the DatabaseAccessor to add this statement to the list of statements being batched. This call may result in the Mechanism executing the batched statements and possibly, switching out the mechanisms

Specified by:

appendCall in class BatchWritingMechanism

clear

public void clear()

INTERNAL: This method is used to clear the batched statements without the need to execute the statements first This is used in the case of rollback.

Specified by:

clear in class BatchWritingMechanism

executeBatchedStatements

public void executeBatchedStatements(AbstractSession session)

INTERNAL: This method is used by the DatabaseAccessor to execute and clear the batched statements in the case that a non batchable statement is being executed

Specified by:

executeBatchedStatements in class BatchWritingMechanism

switchMechanisms

protected void switchMechanisms(AbstractSession session,
                                DatabaseCall dbCall)

INTERNAL: This method is used to switch from this mechanism to the alternate automatically

prepareBatchStatement

protected java.sql.PreparedStatement prepareBatchStatement(AbstractSession session)
                                                    throws DatabaseException

INTERNAL: This method is used to build the batch statement by concatenating the strings together.

Throws:

DatabaseException

prepareJDK12BatchStatement

protected java.sql.Statement prepareJDK12BatchStatement(AbstractSession session)
                                                 throws DatabaseException

INTERNAL: This method is used to build the batch statement for the JDBC2.0 specification

Throws:

DatabaseException