org.apache.stanbol.enhancer.servicesapi.helper
Class AbstractChain

java.lang.Object
  org.apache.stanbol.enhancer.servicesapi.helper.AbstractChain

All Implemented Interfaces:

Chain

@Properties(value={@Property(name="stanbol.enhancer.chain.name"),@Property(name="service.ranking")})
@Service
public abstract class AbstractChain
extends java.lang.Object
implements Chain

Abstract base implementation that reads the of the Chain.PROPERTY_NAME from configuration parsed in the activate methods and implements the getName() method. If the name is missing or empty a ConfigurationException is thrown.

In addition this Class defines a Service, Component and Property annotations for

• EnhancementEngine#PROPERTY_NAME
• Constants.SERVICE_RANKING

This annotations can be Component.inherit() to sub classes and would allow users to specify the name and the ranking of an engine by using e.g. the Apache Felix Webconsole.

Author:

Rupert Westenthaler

Field Summary

protected org.osgi.service.component.ComponentContext

context The ComponentContext set in the activate(ComponentContext) and reset in the deactivate(ComponentContext) method.

Fields inherited from interface org.apache.stanbol.enhancer.servicesapi.Chain

PROPERTY_NAME

Constructor Summary

AbstractChain()

Method Summary

protected void	activate(org.osgi.service.component.ComponentContext ctx)
protected void	deactivate(org.osgi.service.component.ComponentContext ctx)
java.lang.String	getName() The name of this chain as configured by Chain.PROPERTY_NAME

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.stanbol.enhancer.servicesapi.Chain

getEngines, getExecutionPlan

Field Detail

context

protected org.osgi.service.component.ComponentContext context

The ComponentContext set in the activate(ComponentContext) and reset in the deactivate(ComponentContext) method.

Constructor Detail

AbstractChain

public AbstractChain()

Method Detail

activate

protected void activate(org.osgi.service.component.ComponentContext ctx)
                 throws org.osgi.service.cm.ConfigurationException

Throws:

org.osgi.service.cm.ConfigurationException

deactivate

protected void deactivate(org.osgi.service.component.ComponentContext ctx)

getName

public final java.lang.String getName()

Description copied from interface: Chain

The name of this chain as configured by Chain.PROPERTY_NAME

Specified by:

getName in interface Chain

Returns:

the name