com.ontimize.db.event
Class DataPropagationListener

java.lang.Object
  com.ontimize.db.event.DataPropagationListener

All Implemented Interfaces:

EntityDataChangeListener, java.util.EventListener, TransactionEntityDataChangeListener

public class DataPropagationListener

extends java.lang.Object

implements TransactionEntityDataChangeListener

Nested Class Summary

static class

DataPropagationListener.OperationConfiguration

Field Summary

protected java.lang.String	configuration String with the configuration of the data propagation
protected int	eventType Type of event to listen to
protected java.util.List	operationConfiguration List of operations to do when a new event happen

Constructor Summary

DataPropagationListener(java.lang.String configuration, int eventType)
Create a new DataPropagationListener

Method Summary

void	dataChanged(DataChangeEvent e)
void	dataChanged(DataChangeEvent e, java.sql.Connection con)
protected java.util.Hashtable	getAttributesValues(java.util.Hashtable values, java.util.Hashtable relations) Get the attributes to update using the updated values in the original entity and the relation between the columns in the original entity and the new one
protected java.util.Hashtable	getKeysValues(DataChangeEvent event, java.util.Hashtable relations, java.sql.Connection con) Get the keys to identify the record to modify in the new entity.

Methods inherited from class java.lang.Object

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

Field Detail

configuration

protected java.lang.String configuration

String with the configuration of the data propagation

eventType

protected int eventType

Type of event to listen to

operationConfiguration

protected java.util.List operationConfiguration

List of operations to do when a new event happen

Constructor Detail

DataPropagationListener

public DataPropagationListener(java.lang.String configuration,
                               int eventType)

Create a new DataPropagationListener

Parameters:

configuration - This string must be something like: operationName1&entityName1&column1 :referenceColumn1:columnN:referenceColumnN &key1:referenceKey1:keyN:referenceKeyN

eventType - Event type can be DataChangeEvent.UPDATE_EVENT, DataChangeEvent.INSERT_EVENT or DataChangeEvent.DELETE_EVENT

Method Detail

dataChanged

public void dataChanged(DataChangeEvent e,
                        java.sql.Connection con)

Specified by:

dataChanged in interface TransactionEntityDataChangeListener

getAttributesValues

protected java.util.Hashtable getAttributesValues(java.util.Hashtable values,
                                                  java.util.Hashtable relations)

Get the attributes to update using the updated values in the original entity and the relation between the columns in the original entity and the new one

Parameters:

values -

relations -

Returns:

getKeysValues

protected java.util.Hashtable getKeysValues(DataChangeEvent event,
                                            java.util.Hashtable relations,
                                            java.sql.Connection con)
                                     throws java.lang.Exception

Get the keys to identify the record to modify in the new entity. Sometimes this keys are in the event information but sometimes we have to make a new query to get the keys

Parameters:

event -

relations -

con -

Returns:

Throws:

java.lang.Exception

dataChanged

public void dataChanged(DataChangeEvent e)

Specified by:

dataChanged in interface EntityDataChangeListener