com.impetus.kundera.persistence.context

Class FlushManager

java.lang.Object

com.impetus.kundera.persistence.context.FlushManager

public class FlushManager
extends Object

Provides utility methods for managing Flush Stack.

Author:

amresh.singh

Field Summary

Fields

Modifier and Type	Field and Description
private static Map<EventLog.EventType,List<javax.persistence.CascadeType>>	cascadePermission
private EventLogQueue	eventLogQueue The event log queue.
private List<JoinTableData>	joinTableDataCollection Map containing data required for inserting records for each join table.
private static org.slf4j.Logger	log The Constant log.
private Deque<Node>	stackQueue Deque containing Nodes to be flushed Entities are always flushed from the start, there way to end until deque is empty.

Constructor Summary

Constructors

Constructor and Description
FlushManager() Instantiates a new flush manager.

Method Summary

Methods

Modifier and Type	Method and Description
private void	addJoinTableData(JoinTableData.OPERATION operation, String schemaName, String joinTableName, String joinColumnName, String invJoinColumnName, Class<?> entityClass, Object joinColumnValue, Set<Object> invJoinColumnValues) Adds the join table data into map.
private void	addNodesToFlushStack(Node node, EventLog.EventType eventType) Adds the nodes to flush stack.
void	buildFlushStack(Node headNode, EventLog.EventType eventType) Builds the flush stack.
void	clearFlushStack() Empties Flush stack present in a PersistenceCache.
void	commit() Rollback.
Deque<Node>	getFlushStack() Gets the flush stack.
List<JoinTableData>	getJoinTableData() Gets the join table data map.
private void	logEvent(Node node, EventLog.EventType eventType) Log event.
private void	onCommit(Map<Object,EventLog> eventCol)
private void	onRollBack(PersistenceDelegator delegator, Map<Object,EventLog> eventCol) On roll back.
private void	performOperation(Node node, EventLog.EventType eventType)
void	rollback(PersistenceDelegator delegator) Rollback.
private void	rollbackJoinTableData(PersistenceDelegator delegator)

Methods inherited from class java.lang.Object

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

Field Detail

stackQueue

private Deque<Node> stackQueue

Deque containing Nodes to be flushed Entities are always flushed from the start, there way to end until deque is empty.

joinTableDataCollection

private List<JoinTableData> joinTableDataCollection

Map containing data required for inserting records for each join table. Key -> Name of Join Table Value -> records to be persisted in the join table

eventLogQueue

private EventLogQueue eventLogQueue

The event log queue.

log

private static final org.slf4j.Logger log

The Constant log.

cascadePermission

private static Map<EventLog.EventType,List<javax.persistence.CascadeType>> cascadePermission

Constructor Detail

FlushManager

public FlushManager()

Instantiates a new flush manager.

Method Detail

buildFlushStack

public void buildFlushStack(Node headNode,
                   EventLog.EventType eventType)

Builds the flush stack.

Parameters:

headNode - the head node

eventType - the event type

addNodesToFlushStack

private void addNodesToFlushStack(Node node,
                        EventLog.EventType eventType)

Adds the nodes to flush stack.

Parameters:

node - the node

eventType - the event type

getFlushStack

public Deque<Node> getFlushStack()

Gets the flush stack.

Returns:

the flushStack

getJoinTableData

public List<JoinTableData> getJoinTableData()

Gets the join table data map.

Returns:

the joinTableDataMap

clearFlushStack

public void clearFlushStack()

Empties Flush stack present in a PersistenceCache.

rollback

public void rollback(PersistenceDelegator delegator)

Rollback.

Parameters:

delegator - the delegator

commit

public void commit()

Rollback.

Parameters:

delegator - the delegator

onCommit

private void onCommit(Map<Object,EventLog> eventCol)

Parameters:

deleteEvents -

onRollBack

private void onRollBack(PersistenceDelegator delegator,
              Map<Object,EventLog> eventCol)

On roll back.

Parameters:

delegator - the delegator

eventCol - the event col

addJoinTableData

private void addJoinTableData(JoinTableData.OPERATION operation,
                    String schemaName,
                    String joinTableName,
                    String joinColumnName,
                    String invJoinColumnName,
                    Class<?> entityClass,
                    Object joinColumnValue,
                    Set<Object> invJoinColumnValues)

Adds the join table data into map.

Parameters:

operation - the operation

joinTableName - the join table name

joinColumnName - the join column name

invJoinColumnName - the inv join column name

entityClass - the entity class

joinColumnValue - the join column value

invJoinColumnValues - the inv join column values

logEvent

private void logEvent(Node node,
            EventLog.EventType eventType)

Log event.

Parameters:

node - the node

eventType - the event type

rollbackJoinTableData

private void rollbackJoinTableData(PersistenceDelegator delegator)

performOperation

private void performOperation(Node node,
                    EventLog.EventType eventType)

Parameters:

nodeStateContext -