package org.objectstyle.wolips.eomodeler.actions;
import java.util.HashSet;
import java.util.Set;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.commands.operations.AbstractOperation;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.objectstyle.wolips.eomodeler.core.model.AbstractEOAttributePath;
import org.objectstyle.wolips.eomodeler.core.model.DuplicateNameException;
import org.objectstyle.wolips.eomodeler.core.model.EOEntity;
import org.objectstyle.wolips.eomodeler.core.model.EOModelException;
import org.objectstyle.wolips.eomodeler.core.model.EOModelVerificationFailure;
import org.objectstyle.wolips.eomodeler.core.model.IEOAttribute;
public class FlattenOperation extends AbstractOperation {
private AbstractEOAttributePath _attributePath;
private IEOAttribute _newAttribute;
public FlattenOperation(AbstractEOAttributePath attributePath) {
super("Flatten " + attributePath.toKeyPath());
_attributePath = attributePath;
}
@Override
public IStatus execute(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
try {
EOEntity rootEntity = _attributePath.getRootEntity();
_newAttribute = rootEntity.addBlankIEOAttribute(_attributePath);
return Status.OK_STATUS;
} catch (DuplicateNameException e) {
throw new ExecutionException("Failed to flatten.", e);
}
}
@Override
public IStatus redo(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
return execute(monitor, info);
}
@Override
public IStatus undo(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
try {
Set<EOModelVerificationFailure> failures = new HashSet<EOModelVerificationFailure>();
_newAttribute._removeFromModelParent(failures);
return Status.OK_STATUS;
} catch (EOModelException e) {
throw new ExecutionException("Failed to remove flattened object.", e);
}
}
}