org.odpi.openmetadata.frameworks.connectors

Class ConnectorProviderBase

java.lang.Object

org.odpi.openmetadata.frameworks.connectors.ConnectorProvider

org.odpi.openmetadata.frameworks.connectors.ConnectorProviderBase

All Implemented Interfaces:

AuditLoggingComponent

public abstract class ConnectorProviderBase
extends ConnectorProvider
implements AuditLoggingComponent

ConnectorProviderBase is a base class for a connector provider. It manages all of the class loading for subclass implementations of the connector provider along with the generation of new connector guids. ConnectorProviderBase creates a connector instance with the class name from the private variable called connectorClassName. This class name is initialized to null. If the getConnector method is called when the connectorClassName is null, it throws ConnectorCheckedException. This is its default behaviour. To use the ConnectorProviderBase, create a new class that extends the ConnectorProviderBase class and in the constructor call super.setConnectorClassName("your connector's class name");

Field Summary

Fields

Modifier and Type	Field and Description
protected AuditLog	auditLog
protected ConnectorType	connectorTypeBean

Constructor Summary

Constructors

Constructor and Description
ConnectorProviderBase() Typical constructor

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object object) Provide a common implementation of equals for all OCF Connector Provider objects.
Connector	getConnector(Connection connection) Creates a new instance of a connector using the name of the connector provider in the supplied connection.
Connector	getConnector(ConnectionProperties connection) Creates a new instance of a connector based on the information in the supplied connection.
String	getConnectorClassName() Return the class name for the connector that the connector provider generates.
ConnectorType	getConnectorType() Returns the properties about the type of connector that this ConnectorTypeManager supports.
ConnectorTypeProperties	getConnectorTypeProperties() Returns the properties about the type of connector that this Connector Provider supports.
protected String	getNewConnectorGUID() Each connector has a guid to make it easier to correlate log messages from the various components that serve it.
int	hashCode() Provide a common implementation of hashCode for all OCF Connector Provider objects.
void	setAuditLog(AuditLog auditLog) Receive an audit log object that can be used to record audit log messages.
protected void	setConnectorClassName(String newConnectorClassName) Update the class name for this connector provider.
protected void	setConnectorComponentDescription(ComponentDescription connectorComponentDescription) Update the component name to use in the creation of the connector's audit log.
protected void	setConnectorTypeProperties(ConnectorType connectorTypeBean) Setter method to enable a subclass to set up the connector type properties that are added to a connection properties object.
String	toString() Standard toString method.

Methods inherited from class java.lang.Object

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

Field Detail

auditLog

protected AuditLog auditLog

connectorTypeBean

protected ConnectorType connectorTypeBean

Constructor Detail

ConnectorProviderBase

public ConnectorProviderBase()

Typical constructor

Method Detail

getNewConnectorGUID

protected String getNewConnectorGUID()

Each connector has a guid to make it easier to correlate log messages from the various components that serve it. It uses a type 4 (pseudo randomly generated) UUID. The UUID is generated using a cryptographically strong pseudo random number generator.

Returns:

guid for a new connector instance

getConnectorClassName

public String getConnectorClassName()

Return the class name for the connector that the connector provider generates.

Returns:

connectorClassName will be null initially.

setConnectorClassName

protected void setConnectorClassName(String newConnectorClassName)

Update the class name for this connector provider.

Parameters:

newConnectorClassName - this must be a valid Java class name for a class that implements the org.odpi.openmetadata.Connector interface.

setConnectorComponentDescription

protected void setConnectorComponentDescription(ComponentDescription connectorComponentDescription)

Update the component name to use in the creation of the connector's audit log.

Parameters:

connectorComponentDescription - component description.

setAuditLog

public void setAuditLog(AuditLog auditLog)

Receive an audit log object that can be used to record audit log messages. The caller has initialized it with the correct component description and log destinations.

Specified by:

setAuditLog in interface AuditLoggingComponent

Parameters:

auditLog - audit log object

getConnectorTypeProperties

public ConnectorTypeProperties getConnectorTypeProperties()

Returns the properties about the type of connector that this Connector Provider supports.

Specified by:

getConnectorTypeProperties in class ConnectorProvider

Returns:

properties including the name of the connector type, the connector provider class and any specific connection properties that are recognized by this connector.

getConnectorType

public ConnectorType getConnectorType()

Returns the properties about the type of connector that this ConnectorTypeManager supports.

Specified by:

getConnectorType in class ConnectorProvider

Returns:

properties including the name of the connector type, the connector provider class and any specific connection properties that are recognized by this connector.

setConnectorTypeProperties

protected void setConnectorTypeProperties(ConnectorType connectorTypeBean)

Setter method to enable a subclass to set up the connector type properties that are added to a connection properties object. The connector type properties guide the ConnectorBroker and ConnectorProvider on how to create and configure a Connector instance.

Parameters:

connectorTypeBean - default properties for this type of connector

getConnector

public Connector getConnector(Connection connection)
                       throws ConnectionCheckedException,
                              ConnectorCheckedException

Creates a new instance of a connector using the name of the connector provider in the supplied connection.

Specified by:

getConnector in class ConnectorProvider

Parameters:

connection - properties for the connector and connector provider.

Returns:

new connector instance.

Throws:

ConnectionCheckedException - an error with the connection.

ConnectorCheckedException - an error initializing the connector.

getConnector

public Connector getConnector(ConnectionProperties connection)
                       throws ConnectionCheckedException,
                              ConnectorCheckedException

Creates a new instance of a connector based on the information in the supplied connection.

Specified by:

getConnector in class ConnectorProvider

Parameters:

connection - connection that should have all of the properties needed by the Connector Provider to create a connector instance.

Returns:

Connector instance of the connector.

Throws:

ConnectionCheckedException - if there are missing or invalid properties in the connection

ConnectorCheckedException - if there are issues instantiating or initializing the connector

hashCode

public int hashCode()

Provide a common implementation of hashCode for all OCF Connector Provider objects. The UUID is unique and is randomly assigned and so its hashCode is as good as anything to describe the hash code of the properties object.

Overrides:

hashCode in class Object

Returns:

random UUID as hashcode

equals

public boolean equals(Object object)

Provide a common implementation of equals for all OCF Connector Provider objects. The UUID is unique and is randomly assigned and so its hashCode is as good as anything to evaluate the equality of the connector provider object.

Overrides:

equals in class Object

Parameters:

object - object to test

Returns:

boolean flag

toString

public String toString()

Standard toString method.

Overrides:

toString in class Object

Returns:

print out of variables in a JSON-style