Package org.odpi.openmetadata.repositoryservices.connectors.openmetadatatopic

Class OpenMetadataTopicListenerConnectorBase

java.lang.Object

org.odpi.openmetadata.frameworks.connectors.Connector

org.odpi.openmetadata.frameworks.connectors.ConnectorBase

org.odpi.openmetadata.repositoryservices.connectors.openmetadatatopic.OpenMetadataTopicConsumerBase

org.odpi.openmetadata.repositoryservices.connectors.openmetadatatopic.OpenMetadataTopicListenerConnectorBase

All Implemented Interfaces:

AuditLoggingComponent, VirtualConnectorExtension, OpenMetadataTopicListener

public abstract class OpenMetadataTopicListenerConnectorBase
extends OpenMetadataTopicConsumerBase
implements OpenMetadataTopicListener, VirtualConnectorExtension

OpenMetadataTopicListenerConnectorBase is a base class for a connector that is going to embed the OpenMetadataTopicConnector and register a listener with it. It manages the instances of the OpenMetadataTopicConnector as they are passed as a list of connectors from the ConnectorBroker and registers itself with the OpenMetadataTopicConnector. Subclasses just need to manage their list of listeners and override the processEvent() method. When it is called, the subclass

Nested Class Summary

Nested classes/interfaces inherited from class org.odpi.openmetadata.frameworks.connectors.ConnectorBase

ConnectorBase.ProtectedConnection

Field Summary

Fields inherited from class org.odpi.openmetadata.repositoryservices.connectors.openmetadatatopic.OpenMetadataTopicConsumerBase

auditLog, connectionName, eventBusConnectors

Fields inherited from class org.odpi.openmetadata.frameworks.connectors.ConnectorBase

connectedAssetProperties, connectionBean, connectionProperties, connectorInstanceId, securedProperties

Constructor Summary

Constructors

Constructor	Description
OpenMetadataTopicListenerConnectorBase()

Method Summary

Modifier and Type	Method	Description
void	disconnect()	Free up any resources held since the connector is no longer needed.
protected <T> T	getEventBean(String event, Class<T> eventClass)	Parse the event and return it to a Java bean.
void	initializeEmbeddedConnectors(List<Connector> embeddedConnectors)	Set up the list of connectors that this virtual connector will use to support its interface.
abstract void	processEvent(String event)	Method to pass an event received on topic.

Methods inherited from class org.odpi.openmetadata.repositoryservices.connectors.openmetadatatopic.OpenMetadataTopicConsumerBase

setAuditLog, start, validateEventBusConnectors

Methods inherited from class org.odpi.openmetadata.frameworks.connectors.ConnectorBase

equals, getConnectedAssetProperties, getConnection, getConnectorInstanceId, hashCode, initialize, initializeConnectedAssetProperties, isActive, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

OpenMetadataTopicListenerConnectorBase

public OpenMetadataTopicListenerConnectorBase()

Method Detail

initializeEmbeddedConnectors

public void initializeEmbeddedConnectors(List<Connector> embeddedConnectors)

Set up the list of connectors that this virtual connector will use to support its interface. The connectors are initialized waiting to start. When start() is called on the virtual connector, it needs to pass start() to each of the embedded connectors. Similarly for disconnect().

Specified by:

initializeEmbeddedConnectors in interface VirtualConnectorExtension

Overrides:

initializeEmbeddedConnectors in class OpenMetadataTopicConsumerBase

Parameters:

embeddedConnectors - list of connectors

processEvent

public abstract void processEvent(String event)

Method to pass an event received on topic.

Specified by:

processEvent in interface OpenMetadataTopicListener

Parameters:

event - inbound event

getEventBean

protected <T> T getEventBean(String event,
                             Class<T> eventClass)
                      throws Exception

Parse the event and return it to a Java bean.

Type Parameters:

T - the name of the class

Parameters:

event - event as a String

eventClass - class of the Java bean.

Returns:

Java bean

Throws:

Exception - something went wrong in the parsing process.

disconnect

public void disconnect()
                throws ConnectorCheckedException

Free up any resources held since the connector is no longer needed.

Overrides:

disconnect in class OpenMetadataTopicConsumerBase

Throws:

ConnectorCheckedException - there is a problem within the connector.