org.eclipse.vtp.framework.engine.runtime
Class Configurable

java.lang.Object
  org.eclipse.vtp.framework.engine.runtime.Component
      org.eclipse.vtp.framework.engine.runtime.Configurable

Direct Known Subclasses:

Executable, Service

public abstract class Configurable
extends Component

Base class for components that accept configuration data.

Author:

Lonnie Pryor

Field Summary

Fields inherited from class org.eclipse.vtp.framework.engine.runtime.Component

blueprint, constructors, mutators

Constructor Summary

protected

Configurable(Blueprint blueprint, java.lang.Class type, org.w3c.dom.Element[] elements) Creates a new Configurable.

Method Summary

protected Builder	createBuilder(Scope scope) Creates a builder of this component for the specified scope.
protected abstract IContext	createServiceRegistry(Scope scope) Creates a service registry for the specified scope.
protected java.lang.Object[]	lookupAllConfigurations(java.lang.String identifier, IContext serviceRegistry) Returns all the configuration objects in the supplied scope with the specified identifier.
protected java.lang.Object	lookupConfiguration(java.lang.String identifier, IContext serviceRegistry) Looks up a single configuration object in the supplied scope with the specified identifier.

Methods inherited from class java.lang.Object

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

Constructor Detail

Configurable

protected Configurable(Blueprint blueprint,
                       java.lang.Class type,
                       org.w3c.dom.Element[] elements)
                throws java.lang.NullPointerException

Creates a new Configurable.

Parameters:

blueprint - The blueprint of the process.

type - The type of the configurable component.

elements - The configuration data or null for no configuration data.

Throws:

java.lang.NullPointerException - If the supplied blueprint is null.

java.lang.NullPointerException - If the supplied type is null.

Method Detail

lookupConfiguration

protected java.lang.Object lookupConfiguration(java.lang.String identifier,
                                               IContext serviceRegistry)

Looks up a single configuration object in the supplied scope with the specified identifier.

Parameters:

identifier - The identifier of the configuration object to return.

serviceRegistry - The service registry that is bound to the configurable component.

Returns:

A single configuration object or null if one is not found.

lookupAllConfigurations

protected java.lang.Object[] lookupAllConfigurations(java.lang.String identifier,
                                                     IContext serviceRegistry)

Returns all the configuration objects in the supplied scope with the specified identifier.

Parameters:

identifier - The identifier of the configuration objects to return.

serviceRegistry - The service registry that is bound to the configurable component.

Returns:

All the configuration objects or null if none are found.

createBuilder

protected Builder createBuilder(Scope scope)

Creates a builder of this component for the specified scope.

Parameters:

scope - The scope of the instance to create.

Returns:

A new builder of this component for the specified scope.

createServiceRegistry

protected abstract IContext createServiceRegistry(Scope scope)

Creates a service registry for the specified scope.

Parameters:

scope - The scope to create the registry for.

Returns:

A new service registry for the specified scope.