com.jcorporate.expresso.kernel
Class ContainerComponentBase

java.lang.Object
  com.jcorporate.expresso.kernel.ComponentBase
      com.jcorporate.expresso.kernel.ContainerComponentBase

All Implemented Interfaces:

Containable, Describable, ExpressoComponent, Serializable

Direct Known Subclasses:

DataContext, JdbcPersistenceManager, PersistenceManager, RootContainer, Schema

public abstract class ContainerComponentBase

extends ComponentBase

implements Containable

This class provides basic implementations of the Containable Interface to save the typical programmer lots of typing. Under 99% of the conditions it should be sufficient to derivce your container component from this class instead of implementing the interfaces in a raw fashion.

Since:

Expresso 5.1

Version:

$Revision: 1.6 $ on $Date: 2003/06/03 06:12:21 $

Author:

Michael Rimov

See Also:

Serialized Form

Constructor Summary

ContainerComponentBase()
Default constructor that currently does nothing.

Method Summary

ComponentContainer	getContainerImplementation() Retrieves the actual container implementation
ExpressoComponent	locateComponent(String componentName) Convenience method for Container clients.
void	setContainerImplementation(ComponentContainer newContainer) Sets the marker to the ComponentContainer (which has a 1:1 instance mapping with Containable).

Methods inherited from class com.jcorporate.expresso.kernel.ComponentBase

getMetaData, getMetadataLocation, getParent, setMetaData, setParent

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.jcorporate.expresso.kernel.ExpressoComponent

getMetaData, getParent, setParent

Constructor Detail

ContainerComponentBase

public ContainerComponentBase()

Default constructor that currently does nothing.

Method Detail

setContainerImplementation

public void setContainerImplementation(ComponentContainer newContainer)

Sets the marker to the ComponentContainer (which has a 1:1 instance mapping with Containable). This is often called by the actual implementation of the ComponentContainer.

Specified by:

setContainerImplementation in interface Containable

Parameters:

newContainer - a ComponentCo

getContainerImplementation

public ComponentContainer getContainerImplementation()

Retrieves the actual container implementation

Specified by:

getContainerImplementation in interface Containable

Returns:

ComponentContainer

locateComponent

public ExpressoComponent locateComponent(String componentName)

Convenience method for Container clients. Recommended Implementation:

ExpressoComponent getComponent(String componentName) {
return this.getContainerImplementation().getComponent(componentName); }


Specified by:

locateComponent in interface Containable

Parameters:

componentName - The name of the component to retrieve

Returns:

an ExpressoComponent or null if the specified name doesn't exist