org.eclipse.smila.connectivity.framework.impl
Class CrawlerControllerImpl

java.lang.Object
  org.eclipse.smila.connectivity.framework.impl.AbstractController
      org.eclipse.smila.connectivity.framework.impl.CrawlerControllerImpl

All Implemented Interfaces:

CrawlerController, CrawlerControllerCallback

public class CrawlerControllerImpl
extends AbstractController
implements CrawlerController, CrawlerControllerCallback

Basic Implementation of a CrawlerController.

Field Summary

Fields inherited from interface org.eclipse.smila.connectivity.framework.CrawlerController

PERFORMANCE_AGENT_LOCATION

Constructor Summary

CrawlerControllerImpl()
Default Constructor.

Method Summary

java.util.Collection<java.lang.String>	getActiveCrawls() Returns a Collection of Strings containing the dataSourceIds of the currently active crawls.
java.util.Collection<java.lang.String>	getAvailableCrawlers() returns the CrawlerController known Crawlers.
CrawlState	getState(java.lang.String dataSourceId) Returns the CrawlState of the crawl with the given dataSourceId.
boolean	hasActiveCrawls() Checks if there are any active crawls.
int	startCrawl(java.lang.String dataSourceId) Starts a crawl of the given dataSourceId.
void	stopCrawl(java.lang.String dataSourceId) Stops an active crawl of the given dataSourceId.
void	unregister(java.lang.String dataSourceId) Removes a CrawlThread for the given DataSourceId from the list of active CrawlThreads.

Methods inherited from class org.eclipse.smila.connectivity.framework.impl.AbstractController

addComponentFactory, createInstance, getAvailableFactories, getCompoundManager, getConfiguration, getConnectivityManager, removeComponentFactory, setCompoundManager, setConnectivityManager, unsetCompoundManager, unsetConnectivityManager

Methods inherited from class java.lang.Object

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

Constructor Detail

CrawlerControllerImpl

public CrawlerControllerImpl()

Default Constructor.

Method Detail

startCrawl

public int startCrawl(java.lang.String dataSourceId)
               throws ConnectivityException

Starts a crawl of the given dataSourceId. This method creates a new Thread. If it is called for a dataSourceId that is currently crawled a ConnectivityException is thrown. Returns the hashCode of the crawler instance used for performance counter.

Specified by:

startCrawl in interface CrawlerController

Parameters:

dataSourceId - the ID of the data source to crawl

Returns:

- the hashcode of the crawler instance as int value

Throws:

ConnectivityException - if any error occurs

See Also:

CrawlerController.startCrawl(java.lang.String)

stopCrawl

public void stopCrawl(java.lang.String dataSourceId)
               throws ConnectivityException

Stops an active crawl of the given dataSourceId.

Specified by:

stopCrawl in interface CrawlerController

Parameters:

dataSourceId - the ID of the data source to stop the crawl

Throws:

ConnectivityException - if any error occurs

See Also:

CrawlerController.stopCrawl(java.lang.String)

hasActiveCrawls

public boolean hasActiveCrawls()
                        throws ConnectivityException

Checks if there are any active crawls.

Specified by:

hasActiveCrawls in interface CrawlerController

Returns:

true if there are active crawls, false otherwise

Throws:

ConnectivityException - if any error occurs

See Also:

CrawlerController.hasActiveCrawls()

getActiveCrawls

public java.util.Collection<java.lang.String> getActiveCrawls()
                                                       throws ConnectivityException

Returns a Collection of Strings containing the dataSourceIds of the currently active crawls.

Specified by:

getActiveCrawls in interface CrawlerController

Returns:

a Collection of Strings containing the dataSourceIds

Throws:

ConnectivityException - if any error occurs

See Also:

CrawlerController.getActiveCrawls()

getState

public CrawlState getState(java.lang.String dataSourceId)
                    throws ConnectivityException

Returns the CrawlState of the crawl with the given dataSourceId.

Specified by:

getState in interface CrawlerController

Parameters:

dataSourceId - the ID of the data source to get the state

Returns:

the CrawlState

Throws:

ConnectivityException - if any error occurs

See Also:

CrawlerController.getState(java.lang.String)

unregister

public void unregister(java.lang.String dataSourceId)

Removes a CrawlThread for the given DataSourceId from the list of active CrawlThreads.

Specified by:

unregister in interface CrawlerControllerCallback

Parameters:

dataSourceId - the ID of the data source to crawl

See Also:

CrawlerControllerCallback.unregister(java.lang.String)

getAvailableCrawlers

public java.util.Collection<java.lang.String> getAvailableCrawlers()

returns the CrawlerController known Crawlers.

Specified by:

getAvailableCrawlers in interface CrawlerController

Returns:

Collection with Strings

See Also:

CrawlerController.getAvailableCrawlers()