org.topbraid.change
Class DeleteStatementsChange

java.lang.Object
  org.topbraid.core.change.AbstractChange
      org.topbraid.change.DeleteStatementsChange

All Implemented Interfaces:

IChange

public class DeleteStatementsChange
extends AbstractChange

Constructor Summary

DeleteStatementsChange(com.hp.hpl.jena.rdf.model.Statement[] statements)

Method Summary

java.lang.String	check(ISession session) Checks if this can be executed and returns an error string if not.
void	execute(ISession session, org.eclipse.core.runtime.IProgressMonitor monitor) Executes the change.
ImageMetadata	getImageMetadata() Gets (optional) metadata to describe an image about this change.
boolean	isNoop() Checks if this is a no-operation, i.e.

Methods inherited from class org.topbraid.core.change.AbstractChange

getLabel, setImage, setImage, setLabel

Methods inherited from class java.lang.Object

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

Constructor Detail

DeleteStatementsChange

public DeleteStatementsChange(com.hp.hpl.jena.rdf.model.Statement[] statements)

Method Detail

check

public java.lang.String check(ISession session)

Description copied from interface: IChange

Checks if this can be executed and returns an error string if not. This method is usually called by the execution environment prior to calling the IChange.execute(org.topbraid.core.session.ISession, org.eclipse.core.runtime.IProgressMonitor) method.

Specified by:

check in interface IChange

Overrides:

check in class AbstractChange

Parameters:

session - the session to check against

Returns:

null if the change can be performed, an error message otherwise

isNoop

public boolean isNoop()

Description copied from interface: IChange

Checks if this is a no-operation, i.e. resulting in no triple changes. This can be used by execution environments to check whether corresponding user interface components shall be activated to the user.

Specified by:

isNoop in interface IChange

Overrides:

isNoop in class AbstractChange

Returns:

true if this is a no-operation

execute

public void execute(ISession session,
                    org.eclipse.core.runtime.IProgressMonitor monitor)

Description copied from interface: IChange

Executes the change. This should perform the changes to a Jena model. In case of an unexpected state, the method may throw an IllegalStateException.

Parameters:

session - the session to execute the change on

monitor - a progress monitor for longish operations (may be null)

getImageMetadata

public ImageMetadata getImageMetadata()

Description copied from interface: IChange

Gets (optional) metadata to describe an image about this change.

Specified by:

getImageMetadata in interface IChange

Overrides:

getImageMetadata in class AbstractChange

Returns:

the ImageMetadata or null